Contra Costa – Contractors - Remodel & Additions

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(925) 405-6924

Serving the East Bay Area

Services include Commercial Construction, Repairing Fire and Water Damage, Residential Additions and Remodels. Brands include Andersen, Pella.
License 797947 | DCID9258644564
(925) 289-8915

Serving the East Bay and San Francisco, including the Mission, Noe Valley, the Marina, Pacific Heights, the Sunset & the Richmond District.

Services include custom home building, additions, general contracting, whole house remodeling, kitchen and bathroom remodeling, custom tile and stone, window replacements, siding, decks and fences, foundations, custom cabinetry design and...
License 1010847 | DCID9252898915
1809 Santa Rita Road, Suite C
Pleasanton, CA 94566
(925) 405-5903

Serving the East Bay Area

Services include Additions, Kitchens & Bathrooms, Remodeling & Restoration, Residential Only. Brands include Brookhaven, Elmwood, Medallion, Wood-Mode.
License 857709 | DCID9254268854
3420 Fostoria Way, Unit A1
Danville, CA 94526
(925) 350-6438

Serving the East Bay Cities of Alamo, Lamorinda, Pleasanton, Livermore, San Ramon, Dublin, Danville and Walnut Creek.

Services include Additions, Design/Build Construction, Green Building, Kitchen & Bathroom Remodeling, Wall Removals & Structural Changes. Brands include DeWils Custom Cabinets, J&K Cabinetry, Wellborn Cabinets.
License 957091 | DCID9254623000
(510) 761-6917

Serving the East Bay

Services include Commercial, Construction; Design & Build Services; Foundation Replacement; Remodeling; Additions; Improvements; Retaining Walls; Drainage Systems, Industrial, Residential; Design. Brands include .
License 324919 | DCID5105351682
Map of these Diamond Certified companies
Cities: Antioch, Brentwood, Clayton, Concord, Danville, El Cerrito, Hercules, Lafayette, Martinez, Moraga, Oakley, Orinda, Pinole, Pittsburg, Pleasant Hill, Richmond, San Pablo, San Ramon, Walnut Creek
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Researched Articles
Why Trust Diamond Certified Remodeling and Addition Contractors Rated Highest in Quality?
A remodeling contractor completes the framing on a new addition.

You are the customer. If your goal is to choose a remodeling and addition contractor that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified remodeler and addition builder. Each has been rated Highest in Quality in the most accurate ratings process anywhere. And you’re always backed by the Diamond Certified Performance Guarantee. Here’s why the Diamond Certified ratings and certification process will help you find a top-rated additions and remodeling contractor and is unparalleled in its accuracy, rigor and usefulness:

1) Accuracy: All research is performed by live telephone interviews that verify only real customers are surveyed, so you'll never be fooled by fake reviews.

2) Statistical Reliability: A large random sample of past customers is surveyed on an ongoing basis so the research results you see truly reflect a Diamond Certified company’s top-rated status.

3) Full Disclosure: By clicking the name of a company above you'll see the exact rating results in charts and read verbatim survey responses as well as researched articles on each qualified company.

4) Guaranteed: Your purchase is backed up with mediation and the Diamond Certified Performance Guarantee, so you can choose with confidence.

Click on the name of a Diamond Certified company above to read ratings results, researched articles and verbatim customer survey responses to help you make an informed decision.

More than 200,000 customers of local companies have been interviewed in live telephone calls, and only companies that score Highest in Quality in customer satisfaction–a 90+ on a 100 scale–as well as pass all of the credential-based ratings earn Diamond Certified. By requiring such a high score to qualify, the Diamond Certified program eliminates mediocre and poorly performing companies. Read detailed information about the ratings and certification process.

How to Choose
Know What You Want From Your Contra Costa County Remodeler and Home Addition Contractor

Whether you need more living space to accommodate a growing family or you want to modernize a drab and dated home, chances are that a local remodeling and addition contractor in Contra Costa County has the answer.

Research is the key to finding the best home renovation contractors in Contra Costa County, including those in the major cities of Concord, Richmond, Antioch, Pittsburg and Walnut Creek, as well as those in the smaller towns such as Port Chicago, Rheem Valley, Blackhawk, Briones and Maltby.
...

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Whether you need more living space to accommodate a growing family or you want to modernize a drab and dated home, chances are that a local remodeling and addition contractor in Contra Costa County has the answer.

Research is the key to finding the best home renovation contractors in Contra Costa County, including those in the major cities of Concord, Richmond, Antioch, Pittsburg and Walnut Creek, as well as those in the smaller towns such as Port Chicago, Rheem Valley, Blackhawk, Briones and Maltby.

First, have a clear idea of what type of project you’re looking for. Do you want to add a room or build a second story? Do you want to remodel your kitchen and bathroom, or turn your attic or basement into living space? By having clear parameters of the size and scope of your project, you’ll help contractors give you a reliable bid and add suggestions for the best use for your existing and new spaces.

Hire an Experienced Home Remodeling and Addition Contractor in Contra Costa County
Most remodeling companies and home addition contractors in Contra Costa County have experience with

a variety of home makeover and home addition services including the following:

  • Home additions
  • Bathroom remodeling
  • Kitchen remodels
  • Second-story home additions
  • Room additions
  • Garage additions
  • Bedroom additions / remodeling
  • Basement remodeling
  • Sunroom additions
  • Attic remodeling
  • Family room additions
  • Custom remodeling plans
  • Old house renovations

Experienced remodeling contractors are more likely to give accurate bids, create unique remodeling and addition plans, do a professional job and complete the project on time. So confirm that the Contra Costa County renovation contractor you’re considering has successfully completed several of the type of home addition or remodeling project you are hiring them to perform. Ask to see photos or even visit recent projects they’ve finished that are similar to yours.

The Value of Researching Remodeling and Addition Contractors in Contra Costa County
While it’s best to choose a Diamond Certified home remodeling and additions company because they’re rated Highest in Quality, that may not always be possible. If you’re unable to choose a Diamond Certified remodeling contractor in your area, you can improve your chances of hiring a good home addition company by checking out candidates on the Contractors State License Board website to ensure active license and workers’ compensation insurance. Violations will also appear on their license record, so you’ll know about recent infractions or serious customer grievances that have been processed by the state.

Then take time to verify company credentials. Remodelers who are members of local remodeling and home addition organizations and national building associations may offer better service, and you’ll be able to see their past records, including complaints and legal action.

You’ll probably spend weeks and even months dealing with your addition and remodeling contractor, depending on the work you’re having done. And as with any working relationship, it’s important you work well together. So you’ll want to consider the personal and professional qualities you value in a remodeling contractor. Promptness, good communication skills, honesty and cleanliness are important to many consumers, so decide what traits you want in the home addition and remodeling contractor you hire and don’t settle for less.

Be aware, though, that with some remodeling companies in Contra Costa County, including in the larger cities of Walnut Creek, Brentwood, Concord, Richmond and Pittsburg, the estimator you first deal with might not be part of the construction crew. That means there’s a chance the relationship you’ve built with them and the agreements you’ve made might not carry through to the rest of the job. If you’ve been talking with a local remodeling contractor, you may want to confirm with them who will be your contact during the remodeling or addition project and how they can guarantee the promises made during the planning process will be kept by the building crew.

Further Research on Good Remodeling and Home Addition Contractors in Contra Costa County in These Larger Cities: Concord, Richmond, Antioch, Walnut Creek, Pittsburg, San Ramon, Danville, Brentwood, Martinez and Pleasant Hill
Now that you’ve done some initial research and have a clearer idea of what it is you want in your new home addition and your contractor, talk with a few remodeling companies and home addition specialists in your area of Contra Costa County. That’s easy if you live in one of the larger cities, including Concord, Martinez, Richmond, Walnut Creek or Pittsburg. However, many addition and remodeling contractors are willing to travel to other parts of Contra Costa County, including the smaller towns of Hercules, El Sobrante, Pinole, Los Medanos, Clyde, West Pittsburg and Vine Hill.

When interviewing remodelers, remember that many good addition and remodeling companies will not provide estimates over the phone without seeing the job first. Still, don’t feel obligated to set an appointment for an in-home estimate if you weren’t impressed with your initial contact with the contractor. If the local home addition and remodeling companies you’ve talked with don’t meet your expectations or can’t answer your questions satisfactorily, feel free to end the conversation and move on to the next high-quality remodeling contractor on your list.

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Know What You Want
Establish Your Goals for Your Home Addition or Remodel

Many homeowners find that it helps to know the scope of their project and their overarching goals before talking to a home addition and remodeling contractor in Contra Costa County. By knowing what you want to accomplish and the end goal for your project, you’re more likely to be happy with the results of your home remodeling project. So before contacting a local remodeling firm, ask yourself:...

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Many homeowners find that it helps to know the scope of their project and their overarching goals before talking to a home addition and remodeling contractor in Contra Costa County. By knowing what you want to accomplish and the end goal for your project, you’re more likely to be happy with the results of your home remodeling project. So before contacting a local remodeling firm, ask yourself:

  1. Do I want a Diamond Certified company that is rated best in quality and backed bythe Diamond Certified Performance Guarantee?
  2. What is the problem or challenge I want this remodel or home addition to address? (This could include a growing family, in-laws moving in, updating an older home or turning an unused space into a new family room.)
  3. Are there any specific requirements or wishes I have for the project?
  4. What is my budget for home remodeling or home addition costs?
  5. What characteristics and personal and professional qualities am I looking for in a Contra Costa County remodeling and addition contractor?
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What to Ask on the Phone
What to Ask Contra Costa County Remodeling Contractors and Home Addition Specialists on the Phone

A thorough phone interview with prospective home remodelers and home addition contractors in Contra Costa County will help you weed out any less-than-satisfactory contractors and give you a better idea of what local remodelers and addition builders can offer. Here are some questions to get you started:...

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A thorough phone interview with prospective home remodelers and home addition contractors in Contra Costa County will help you weed out any less-than-satisfactory contractors and give you a better idea of what local remodelers and addition builders can offer. Here are some questions to get you started:

  1. Has your company earned and maintained a Diamond Certified rating?
  2. Are you a licensed remodeling contractor?
  3. What is your license number?
  4. Do you have liability and workers’ compensation insurance?
  5. Tell me about your experience with home remodelsand home additions. How many projects like mine have you completed in the past year?
  6. Do you charge for estimates? If so, will you put that payment toward the final project payment if I hire your company for my remodel or home addition?
  7. Will my home remodeling/home addition project require a permit? If so, will you take care of that for me? (Beware of contractors who ask you to take out permits. This may be a sign they’re not licensed contractors.)
  8. Is your remodeling and home addition company a full-service or specialty firm? (Full-service remodeling and addition firms are generally the best choice for large projects and complex additions and remodels. Smaller jobs are often handled by specialty firms who focus in bathroom remodeling or other more specialized projects.)
  9. Do you have your own remodeling crew, or do you subcontract home additions and remodels here in Contra Costa County?
  10. Are you personally on site during the construction and remodeling process?
  11. Do you have a designer on staff? Or can you recommend a designer for our home remodel/home addition?
  12. What guarantees and warranties do you offer on home remodels and new additions?
  13. How long have you been a remodeling contractor and addition builder in Contra Costa County?
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What to Ask in Person
Questions to Ask Contra Costa County Addition and Remodeling Contractors in Person

Once you’ve narrowed down your choices by interviewing local remodelers via phone, meet with your top choices in person. You may find it beneficial to take notes on your conversations and recording each addition contractor’s answers, suggestions and general attitude about the project....

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Once you’ve narrowed down your choices by interviewing local remodelers via phone, meet with your top choices in person. You may find it beneficial to take notes on your conversations and recording each addition contractor’s answers, suggestions and general attitude about the project.

  1. How much time will the remodel/home addition take, from designing through completion?
  2. What is your approach to a project of this size? (This will help you know what to expect if you hire this company for your remodel or home addition.)
  3. Will I be able to stay in my home during the remodel/home addition?
  4. Will this home addition or remodel add value to my home?
  5. Do you have any recent projects in my area of Contra Costa County where I can see how the house addition and home remodels look from the street?
  6. Do you have recent customer references I can call?
  7. Do you offer warranties and guarantees on your work? Will you put them in writing?
  8. How would I handle future service issues? Are you responsible for warranty work if there’s ever a problem with my home addition/remodeling project?
  9. What can I do to make the remodeling and addition process easier?
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What to Ask References
Talk with Previous Customers of Local Remodelers and Home Addition Contractors in Contra Costa County Including the Smaller Cities of Discovery Bay, Crockett, Alamo, Rodeo, Moraga, Kensington, Orinda, Hilltop Mall and Walnut Heights

Diamond Certified remodeling and home addition contractors are your best choice, because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a Contra Costa County remodeling company, you can have confidence choosing a Diamond Certified remodeling contractor from the greater Bay Area. Diamond Certified reports are available online for all certified addition and remodeling contractors. And you’ll never be fooled by fake reviews....

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Diamond Certified remodeling and home addition contractors are your best choice, because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a Contra Costa County remodeling company, you can have confidence choosing a Diamond Certified remodeling contractor from the greater Bay Area. Diamond Certified reports are available online for all certified addition and remodeling contractors. And you’ll never be fooled by fake reviews. That’s because all research is performed in live telephone interviews of actual customers.

If you can’t find a Diamond Certified remodeling company within reach, you’ll have to do some research on your own. In that case, it’s sensible to call some references provided by the Contra Costa County remodeling companies you’re deciding among. Keep in mind, though, that references provided to you by the home addition contractors are not equal in value to the large random sample of customers surveyed during the Diamond Certified ratings process.

That’s because references given to customers from companies are cherry-picked instead of randomly selected from all their customers. So the contractors will likely give you a few customers to call that they know are satisfied. If you do call references on your own, request a list of the company’s 10 most recent customers. This will help avoid them giving you only the names of customers they know were satisfied. Then, use these questions to get you started in your interview of previous customers.

  1. Were you satisfied with the home remodel/home addition work from _(remodeling & addition company name)_?
  2. What was the type and scope of job they did for you (new room addition, kitchen remodel, bathroom remodel, whole home remodeling, sunroom addition, basement remodel, home renovations, etc)
  3. Did the Contra Costa County remodeling contractor and home addition company you hired complete the work on time?
  4. Did the contractor keep you up-to-date on the status of the project?
  5. Were there unexpected costs? If so, what were they for and were they avoidable?
  6. If you live in a smaller, did the remodeling contractors charge extra to travel to your home?
  7. Did the Contra Costa County home remodelers show up on time?
  8. Did they clean up after finishing the home renovations?
  9. If you need home additions or remodeling work in the future, would you use this contractor again?
  10. Would you recommend them to friends or family?
  11. Can I visit your home to see the completed home renovations and room addition?
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Review Your Options
Hire Good Remodeling Companies and Addition Contractors in Contra Costa County, Including the Major Cities of Concord, Pittsburg, Richmond, Antioch, Martinez, Walnut Creek, Danville, San Ramon, Brentwood and Pleasant Hill

Before signing a contract with a home renovation and remodeling contractor in Contra Costa County, make one final review of your choices and ask yourself the following questions:...

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Before signing a contract with a home renovation and remodeling contractor in Contra Costa County, make one final review of your choices and ask yourself the following questions:

  1. Can the remodeling contractors and addition builders you’ve interviewed meet your needs in terms of scheduling, design and construction preferences?
  2. Are the Contra Costa County remodeling contractors knowledgeable about the scope and details of the home remodel/home addition you’re considering? Can they tell you which designs and products best suit your needs and why (i.e. whole home renovation, kitchen remodel, bathroom remodel, sunroom addition, basement renovation, attic remodeling, bedroom addition, etc.)?
  3. Is the renovation and remodeling company sensitive to your budget? Can they offer various solutions and finish products that fit your resources? Most home addition contractors will give you bids for Good, Better and Best options that include choices of design and aesthetics, prices, brand names/manufacturers and services.
  4. Do the remodeling and addition contractors in Contra Costa County offer warranties in the event of a product failure or construction/installation error? Will they put their guarantees in writing?
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How to Work With
Get the Most Out of Your Remodel from Local Contra Costa County Contractors

Before interviewing and choosing a good home remodeling company in Contra Costa County, including those serving the larger cities of Concord, Walnut Creek, Richmond, Antioch and Pittsburg, decide the type of project you’re looking for and the scope of the work you want done. You should also know the budget range you’re looking to stay within. This will help you express yourself to the contractors you talk to, and will give each remodeling contractor and home addition builder the chance to bidon the same project....

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Before interviewing and choosing a good home remodeling company in Contra Costa County, including those serving the larger cities of Concord, Walnut Creek, Richmond, Antioch and Pittsburg, decide the type of project you’re looking for and the scope of the work you want done. You should also know the budget range you’re looking to stay within. This will help you express yourself to the contractors you talk to, and will give each remodeling contractor and home addition builder the chance to bidon the same project. And it will help you define boundaries so that you don’t end up getting—and paying for—more work than you want or need.

Knowing the scope of your home addition or renovation will give you a good idea of whether you want to stay in your home during the work or relocate while the construction is in process. Home renovations and additions can be loud, dusty and disruptive, but some are more intense than others. Consider the rooms you’re having remodeled or the location of the home addition and ask the home remodeling and addition contractors you interview whether you’ll be able to stay in your home during the work. You may want to consider moving to another location for the duration of the project if important rooms (like your kitchen and bathrooms) will be under construction, or if the contractor expects major interruptions in electricity or water.

Sign a Contract with a Good Contra Costa County Remodeling Company
Once you’ve found the Contra Costa County remodeling and addition contractor that is best suited to your job, you can move forward by obtaining a detailed estimate and signing a contract. The contract should include the price, start and end dates and any special requests you’ve agreed upon with your local home renovation contractor. You’ll also want to confirm any warrantees or guarantees at this time and make sure they’re in writing in the contract.



Read through the estimate and be sure you understand all terms and limitations before you sign the contract. The contract you sign with your Contra Costa County remodeling company is binding, so for your protection, never sign a blank or incomplete estimate.

Prepare for Your Home Remodel and New Home Addition
Good Contra Costa County remodeling contractors are professionals, but you can save time and money by planning for your home addition and renovation.
Provide adequate storage space if required. Some remodeling contractors in Contra Costa County have facilities or travel trailers in which to store remodeling materials and building equipment, but others expect homeowners to provide a clean, dry and accessible storage area for these materials. Ask your home renovation contractor if you’ll need to have space for materials and, if so, how much space is needed.

Supply clearance and parking space for work trucks. Construction vehicles are often large and may need special parking consideration depending on the size of your driveway or available street parking. Ask your contractor how many work vehicles will need parking space, and whether trailers or other large vehicles will be on site daily. It may also be wise to walk through your property with your Contra Costa County remodeling contractor and have them advise you of any clearance issues, lawn ornaments or potential hazards that you can move or minimize before the work begins.

Prepare your home for construction. Remodeling and new addition construction is often a dusty job. Many contractors will provide taping and plastic barriers to prevent dust and construction debris from entering areas of your home that aren’t being remodeled or renovated, but you may be able to save time and money by preparing your home yourself. Talk with your remodeling contractor about steps you can take before the remodeling begins.

Move and store unnecessary items. Remove furniture, decorations, rugs and other movable objects from the rooms to be remodeled. This will protect them from dust and damage, and will allow your remodeling contractors to move freely and avoid injury. You may also want to temporarily store any heirlooms or expensive items that are located in high traffic areas of your home. Keep in mind that construction can cause items to shift and fall from shelves and walls, and take down any artwork or decorations.

Keep children and pets away from the construction area. Your remodeling and home addition contractors shouldn’t be expected to watch out for kids and pets. So for their safety, keep any household pets or children out of the area when your remodeling contractors are working. It’s wise to keep everyone away from the construction area even when no remodelers are working as building tools, unfinished construction and exposed wires may pose a safety hazard.

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Be a Good Customer
How Can You Be a Good Remodeling Company Customer?

The best local remodelers and home addition contractors in Contra Costa County will have superior remodeling and building skills that will enable them to do good work and offer a fair value. But you also play a part in the success of your remodel and home addition. Here are a few simple steps you can take to be a good customer when hiring a Contra Costa County remodeling contractor and home addition company....

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The best local remodelers and home addition contractors in Contra Costa County will have superior remodeling and building skills that will enable them to do good work and offer a fair value. But you also play a part in the success of your remodel and home addition. Here are a few simple steps you can take to be a good customer when hiring a Contra Costa County remodeling contractor and home addition company.

  • Be clear and upfront with the remodeling and renovation specialist. Let them know what you want from your home renovation or room remodel, the long-term outcome you’re expecting and specific ways they can meet your expectations.
  • Remember, a smile goes a long way!
  • Before you hire a Contra Costa County remodeler or home addition contractor, restate your expectations and goals, and reiterate to the remodeling company representative your understanding of the agreement. Most problems with local remodelers and home addition contractors occur because of a breakdown in communication. By being clear about your expectations and theirs, you can avoid most conflicts.
  • Ask your remodeler if you should call to check on the progress or if he will call you with updates on your home addition.
  • Be sure your service representative has a phone number where they can reach you at all times while they’re remodeling your home. The addition process will move along more smoothly if your contractor can reach you for any necessary updates, questions or work authorizations.
  • When your remodeling contractor contacts you, return calls promptly to keep the home addition or remodel on schedule.
  • Pay your remodeling and addition contractor promptly.

Why would you want to be a good customer? Contra Costa County home addition and remodeling contractors in the larger cities of Concord, Walnut Creek, Richmond, Antioch and Pittsburg, and all of the smaller towns appreciate customers who are straightforward, honest and easy to work with. Your good customer behavior sets the tone from your end and creates an environment conducive to a good relationship. Things may very well go smoother and any problems may be more easily resolved.

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Check the Work
Verify the Completed Home Additions and Remodeling Work

Once the work is completed, walk though your new home addition or remodel with your renovation contractor. Check the work against your invoice and make sure that it stands up to your expectations and is what was promised in your contract.

The invoice from your Contra Costa County remodeling contractor should include the following:...

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Once the work is completed, walk though your new home addition or remodel with your renovation contractor. Check the work against your invoice and make sure that it stands up to your expectations and is what was promised in your contract.

The invoice from your Contra Costa County remodeling contractor should include the following:

  • The name, physical address and state license number of the remodeling contractor.
  • A complete list of all work performed.
  • An itemized list of all construction materials.
  • The total cost for your home renovation or home addition, including an itemized amount due for labor.
  • A written explanation of any warrantees or guarantees provided by the product manufacturers and the home remodeling contractors.
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Top 10 Requests
Bay Area Remodeling and Additions Top Service Requests

The most popular types of remodeling and addition projects for contractors in Contra Costa County are listed below, including examples of each kind of remodeling job.

Kitchen Remodeling
Kitchen remodeling includes renovations of the design, style and structure of a kitchen. A kitchen remodel may comprise new kitchen design plans, kitchen counters, kitchen cabinets, new kitchen appliances, new flooring and new kitchen lighting.

Bathroom Remodeling (Bath Remodeling)...

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The most popular types of remodeling and addition projects for contractors in Contra Costa County are listed below, including examples of each kind of remodeling job.

Kitchen Remodeling
Kitchen remodeling includes renovations of the design, style and structure of a kitchen. A kitchen remodel may comprise new kitchen design plans, kitchen counters, kitchen cabinets, new kitchen appliances, new flooring and new kitchen lighting.

Bathroom Remodeling (Bath Remodeling)
A minor bathroom remodel will change the appearance of an existing bathroom, while a larger-scale bath remodel can change the size and usage of an existing bathroom. Most bathroom renovations in Contra Costa County include new bathroom fixtures, paint, bathroom flooring, bathroom tile, bath cabinets, new showers and bathtubs, new bathroom mirrors and even new bathroom floor plans.

Home Addition Building
Home additions, including master bedroom additions, family room additions, garage additions, in-laws quarters, mud room additions, second-story additions, kitchen extensions, sunroom additions, dormer additions, front porch additions and bonus room additions, are a great way to add value and extra space to existing homes.

Sunroom Addition
Also known as four-season rooms, sunrooms generally cost less than regular home additions. They are a supplemental home addition (rather than a functional or necessary home addition, like that of a bathroom addition, kitchen or bedroom addition) that provide extra space for reading and entertaining. Many sunroom additions come in the form of a prefabricated kit and do not include central heating or cooling systems.

Home Remodeling
Home remodeling, done either as a single-room remodeling project or as an entire home renovation, includes changing the appearance and even the design of the home. Most home remodels in Contra Costa County include new home floor plans and home improvements such as new flooring, new windows, kitchen and bathroom remodeling, basement remodeling, attic renovations, new paint, new appliances and other home interior renovations.

Basement Remodeling
Basement renovations are a popular home remodeling project. Most basement renovations turn unused basement space into a finished basement with a family room, bedroom, basement bathroom, recreation room (rec room), or other usable space. Contra Costa County basement remodeling plans may include basement design, the installation of basement walls, new carpeting and flooring, a basement fireplace and a basement bar.

Home Renovations
Like home remodeling, home renovations can change the design, functionality and appearance of your home’s interior. Home renovations, whether in the kitchen, bathroom, basement, bedrooms or living rooms, often start with home renovation plans from a qualified Contra Costa County remodeling contractor and include new house interior designs, new flooring and wall coverings, new countertops and cabinets, construction of new walls and home improvements like new fireplaces and new lighting.

Room Addition
Room addition to homes can be any size and may include bathroom additions, family room additions, modular home additions, sunroom additions and bedroom additions. Room additions are often a complex process. Since the new room addition plans should match your existing home and must correctly connect to the existing structure, it’s wise to hire an experienced Contra Costa County home addition contractor to draw up your room addition plans and complete the new addition.

Garage Addition
Garage additions create more space for vehicles, storage and even future living space. Garage plans can be drawn to add on to existing garages and existing homes, or can be free-standing garages. If you have future plans of adding a bathroom or renovating your garage to create living space, you can have your Contra Costa County addition builder install plumbing and electrical in your new garage addition.

Custom Remodeling Plans
Home remodeling contractors in Contra Costa County can create custom remodeling plans based on your existing home and your requirements and wishes for your home remodel or addition.

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If Things Go Wrong
Rely on The Diamond Certified Performance Guarantee

Diamond Certified remodeling contractors are backed by the Diamond Certified Performance Guarantee. If the home remodeling and addition company is Diamond Certified and you can’t resolve the issue by talking with the owner, contact the mediation department at info@diamondcertified.org or call 800-738-1138.

Easy Ways to End Conflict with Contra Costa County Home Addition and Remodeling Contractors ...

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Diamond Certified remodeling contractors are backed by the Diamond Certified Performance Guarantee. If the home remodeling and addition company is Diamond Certified and you can’t resolve the issue by talking with the owner, contact the mediation department at info@diamondcertified.org or call 800-738-1138.

Easy Ways to End Conflict with Contra Costa County Home Addition and Remodeling Contractors
The best way to avoid messy misunderstandings and disagreements with your remodeling and addition contractor is to choose a trustworthy, experienced local addition contractor in Contra Costa County.

But if a disagreement does occur between you and your home remodeler, the most direct route to solving the problem is talking directly to your contractor. Most local builders are proud of their reputations and are invested in keeping their customers happy.

If your situation requires talking with your remodeler to find a resolution, remember these tips to increase your chances of getting a good result:

  • Meet in person with your contractor immediately when you have a complaint or a concern with the remodeling design, remodeling crew, materials or workmanship. Don’t wait until the job is done to bring up your concerns.
  • Revisit your contract with your remodeling and addition contractor and try to verbally resolve the problem.
  • Write down your complaint and, if possible, photograph the workmanship or products you’re concerned about. Also document the times you contacted your Contra Costa County remodeling contractor and their response.
  • Set a deadline with your contractor for resolution of your complaints. Be up front with them that you’re willing to work toward a mutually-beneficial solution.
  • If you do not get an appropriate response from your contractor, you may want to consider calling a local building inspector or hiring a remodeling expert to neutrally evaluate the problem.
  • You may legally withhold payment until the dispute is resolved.
  • File serious grievances with the Contractors State License Board.
  • Contact your state attorney general if you are considering pressing charges against the remodeling contractor for serious violations.
  • Fire the contractor as a last resort. Releasing the remodeling company can result in lengthy project delays and costly lawsuits.
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Glossary of Terms
Glossary for Bay Area Remodeling and Additions Customers

Below are some common terms and descriptions associated with remodeling and home additions that will help you navigate your way through your home renovation process.

bathroom remodel
A bathroom remodel will change the size and appearance of an existing bathroom. Most bathroom remodels in Contra Costa County include new bathroom floor plans, updated bathroom fixtures, flooring, tile, bathroom cabinets and countertops, new bathtubs and shower enclosures.
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Below are some common terms and descriptions associated with remodeling and home additions that will help you navigate your way through your home renovation process.

bathroom remodel
A bathroom remodel will change the size and appearance of an existing bathroom. Most bathroom remodels in Contra Costa County include new bathroom floor plans, updated bathroom fixtures, flooring, tile, bathroom cabinets and countertops, new bathtubs and shower enclosures.

Also known as: bathroom remodeling, bathroom remodels, bathroom redesigns, basement bathroom remodels, small bathroom remodel, master bathroom remodeling, basement bathroom remodeling, bath remodels

basement renovations
Basement renovations turn unused basement space into finished basements with a family room, extra bedrooms, basement bathroom, recreation room (rec room), game room, or other usable space. Contra Costa County basement remodeling contractors provide basement design, basement wall installation, new carpet and flooring, basement fireplaces and basement bars.

Also known as: basement remodels, basement remodeling, basement remodeling plans, basement bathroom remodeling, basement finishing, finishing a basement, basement designs, basement remodel design

bedroom addition
Adding a new bedroom to an existing home through the process of a room addition is known as a bedroom addition. Bedroom additions can be added on top of an existing home as a second-story addition, above a garage or alongside the existing structure.

Also known as: bedroom additions, master bedroom addition, master bedroom addition plans

bedroom remodeling
Remodeling an existing bedroom can include new bedroom floor plans, the addition of a master bathroom, new bedroom designs and bedroom redecorating.

Also known as: bedroom renovation, bedroom designs, bedroom renovations, master bedroom remodeling, master bedroom remodel design

change order
Work that is changed during construction and differs from the work contracted for. Change orders require an addendum to the renovation and addition contract and ay result in additional charges.

Also known as: construction change orders, remodeling change order, home renovation change order, change order request, contract change order, remodeling change request

custom remodeling plans
Custom remodeling plans are based on your existing home and your requirements for your new home remodel and home addition. Good Contra Costa County remodeling and addition contractors can provide customized home remodeling plans for every project.

Also known as: custom home remodeling plans, custom house plans, custom basement remodeling plans, custom home remodeling floor plans, custom kitchen remodeling plans, custom home addition plans, custom home renovations, custom home addition floor plans

estimate
An initial bid that lists the anticipated costs and expenses of a home remodel or home addition. An estimate should include itemized lists for labor and materials. Once signed by the remodeling contractor and homeowner, an estimate is a binding document.

Also known as: home remodeling estimate, home renovation estimates, home addition estimate, kitchen remodeling estimate, home remodeling cost estimate, bathroom remodel estimate

garage addition
Garage additions can add on to existing garages and homes, or can be free-standing. If you have future plans of adding a bathroom or turning your garage into living space, a Contra Costa County addition builder can install plumbing and additional electrical wiring in your new garage addition.

garage remodel
Existing garages can be renovated into living space, additional rooms, mother-in-laws quarters, game rooms or storage space by Contra Costa County remodeling contractors.

green remodeling
Many Contra Costa County home addition and renovation contractors offer green remodeling services. Green remodeling can be defined as home remodeling with an emphasis on sustainability, maximizing natural resources and efficient and ecologically-responsible design and construction techniques.

Also known as: eco-friendly remodeling, green home remodeling, green building, green remodels, green remodeling designs, green kitchen remodel, green bathroom remodel, sustainable remodeling

home additions
Home additions, including master bedroom additions, second-story additions, kitchen extensions, sunroom additions, family room additions, modular home additions, garage additions, in-laws quarters, mud room additions, dormer additions, front porch additions and bonus room additions, can add value and space to existing homes.

Also known as: room additions, second-story additions, adding-on, add-on home, addition to home, building an addition, addition building

home remodeler
A home remodeler is a remodeling contractor that specializes in renovating existing homes. Many home remodelers in Contra Costa County are also home addition builders who can add new rooms, second story additions and new garage additions to existing homes.

Also known as: house remodeling contractors, remodelers, home renovation contractors, remodeling construction company, home contractors, home addition contractors, remodel contractors, remodeling construction, remodelling contractor, home improvement contractor

home remodeling
Home remodeling can refer to a single-room remodeling project or an entire home renovation. A full house remodel includes changing the floor plan or design of the home to modify the appearance of the home. Most house remodels in Contra Costa County include new home floor plans and home improvement renovations such as new flooring and windows, kitchen and bathroom renovations, basement finishing, attic remodeling, fresh paint, new appliances and other home interior changes.

Also known as: home renovation, home makeover, renovations, house remodeling, home additions, remodel a home, home remodel, construction remodeling, home restoration, home remodeling services, room remodeling

home restoration
A home remodel that is done to preserve the original structure of the house is referred to as a home restoration. Home restorations may also restore the original style, structure and historic relevance of a home.

Also known as: historical home restoration, historic home remodeling, antique home renovation, house repair and restoration, home restoration companies, home restorers, restoration for homes, house refinishing, house restoration services

kitchen remodel
Kitchen remodeling in Contra Costa County often involves renovating the design, style and structure of kitchens. A good kitchen remodel may comprise new kitchen design plans, kitchen counters, kitchen cabinets, new kitchen appliances, new flooring and new kitchen lighting. Some remodeling companies in Contra Costa County specialize in kitchen remodeling and only do kitchen designs and renovations.

Also known as: kitchen remodeling, kitchen designs, remodeling for kitchens, kitchen remodels, remodel kitchen, new kitchen plans, kitchen renovations, kitchen style renovations

room addition
Room additions may include bathroom additions, family room additions, modular home additions, sunroom additions or conservatory additions and bedroom additions. Room additions are often a complex process regardless of the size of the room addition. Since new room addition plans should match the existing home and must correctly connect to the existing structure, it’s wise to hire experienced Contra Costa County home addition contractors to draw up room addition plans and complete new additions.

Also known as: home additions, new room additions, large room additions, small room additions, home addition plans, addition to house, adding on to a house

subcontractors
Subcontractors are construction professionals who are hired by construction companies to perform specific tasks or complete work for the contractor. Some Contra Costa County home renovation contractors hire subcontractors to complete certain phases of home additions and remodeling projects, including plumbing, heating and cooling, electrical and finish work. Sub-contractors should be qualified and carefully vetted by the remodeling contractors to ensure a quality home renovation or remodel.

Also known as: subs, independent contractors, assisting contractors, general contractor subs, construction workers, individual contractors, sub construction contractors, subcontracting employee

sunroom addition
Also called four-season rooms, sunroom additions are generally less expensive to build than room additions for homes. Sunrooms are considered supplemental home additions that provide extra space for reading and entertaining rather than functional or necessary home additions, like bathroom additions, kitchen and bedroom additions that add living space to homes. Some sunroom additions are available as prefabricated kits and do not include central heating or cooling.

Also known as: four-season rooms, 4 season rooms, enclosed porches, conservatory additions, sunporch additions, screened porch additions, screened-in porches, solarium additions, patio enclosure, screened enclosure additions, screened rooms, pool room additions, three-season rooms, 3 season rooms, patio room additions, California rooms, garden rooms

whole house remodel
Whole house remodels are remodeling projects that renovate an entire home rather than just one or a few rooms. Whole house remodels may involve gutting and rebuilding the interior of a home from the subflooring to the ceiling and might include moving, adding or removing walls. Whole house remodels can be a cost-effective way to completely renovate an old house to make it feel like a brand new home.

Also known as: whole house remodeling and addition, whole house remodeling project, entire house remodel, complete house remodel, complete home remodeling, complete home makeover, complete renovation, whole home redesign, top-to-bottom remodel, home renovations, whole home renovating, small home remodeling, small home expansion, large home remodeling

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Frequently Asked Questions
Contra Costa County Home Remodeling and Additions FAQ

Q: Why choose a Diamond Certified remodeling contractor and addition builder?...

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Q: Why choose a Diamond Certified remodeling contractor and addition builder?
A: Diamond Certified helps you choose a home remodeling contractor with confidence by offering a list of top-rated local companies who have passed the country’s most in-depth rating process. Only remodeling firms rated Highest in Quality earn the prestigious Diamond Certified award. Most companies can’t pass the ratings. American Ratings Corporation also monitors every Diamond Certified company with in-depth and ongoing research and ratings. And your purchase is backed by the Diamond Certified Performance Guarantee. So you’ll feel confident choosing a Diamond Certified remodeling contractor and addition builder.

Q: Why would I want to remodel or add to my home?
A: Remodeling can modernize your home, improve energy efficiency, and give you a new sense of pride in your home. Many Contra Costa County homeowners find that home remodeling projects allow them to upgrade their current home so that they’re happier living in their home and increase the resale value of their home. Like home renovations, home additions can add more usable space to a home. Whether you add a sunroom, a new garage or a bedroom addition, home additions add square footage and usability to your house.

Q: Should I hire a remodeling and addition contractor for my project? Can’t I just do it myself?
A: DIY stores and home improvement centers may carry many of the tools and materials for your home remodeling and addition project, and some homeowners certainly can take on these projects themselves. However, many homeowners find it saves them time, money and frustration to hire a competent, experienced remodeling contractor for their home renovation. A good remodeling and addition contractor will help you plan, execute and finish the project with much less hassle than you can expect when taking on a project yourself.

Q: How much will my remodeling project/home addition cost?
A: The cost of home renovations depends on the size and scope of your project and the quality of materials used for the addition or remodeling. When getting estimates from local remodeling contractors and home addition builders in Contra Costa County, make sure you’re asking the contractors to big on the exact same scope, size and materials in order to get accurate bids.

Q: I have three estimates and they vary greatly in price. Why is this?
A: It’s not uncommon for prices to vary from contractor to contractor. But if the gap between the highest price and the lowest price seems too substantial to be correct, or one bid is much higher or lower than the others, talk with the contractors again. It may be that one contractor didn’t understand the scope or details of the project they were bidding. Ask the remodeling contractors to fully explain their bids, and if they are vague about their answers, move on to the next contractor. Beware of bids that seem artificially low, as some home renovation contractors purposely underbid jobs and then tack on expensive change orders during the construction.

Q: How long do home remodels and additions take?
A: Depending on the size and scope of your project, your remodel may take a few weeks to a few months and room additions can take several months. Problems found during demolition, unforeseen challenges and the skill of your contractor can also add to the timeline. It’s important to get a clear and reasonable timeframe estimate from your Contra Costa County remodeling contractor and home addition builder when getting initial cost estimates.

Q: How much value will my addition or renovation add to my home?
A: The amount of value added to your home depends greatly on the renovation you choose and the quality of the workmanship and materials. If you’re planning to live in your home long-term, you may find that your room addition and home renovation will add more to your quality of living in your home, even if it doesn’t add to the resale value of your home. On the other hand, if you’re planning to sell your home soon, you may want to consult with contractors and real estate agents about which home additions and remodeling projects will add the most value to your home. For an idea of the added value of some of the most common remodeling projects, you can visit this site that compares cost and value of remodels.

Q: Do I need to hire an architect, or can my Contra Costa County remodeling contractor and addition builder draw my home renovation designs?
A: Depending on the size and scope of your project, there are pros and cons to hiring an architect to draw up home remodeling plans and hiring a remodeling contractor who offers design/build services for home renovations.

Here are a few to consider:

  • A general rule of thumb that many builders follow is that if you’re tearing down walls or moving walls, or if your project includes an addition and new construction, hire an architect.
  • Architects are trained to look beyond the outward design and consider the usability of a space, local building codes and zoning regulations, and can draw a complete set of home remodeling and home addition plans.
  • Some design/build remodeling contractors in Contra Costa County can offer lower costs and shorter construction timeframes by providing both home designs and building services.
  • Some Contra Costa County remodeling contractors prefer to do their own designs in-house and have the ability to draw home remodeling and addition plans in-house.
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Consumer Agencies
Remodeling and Additions Contractor Consumer Agencies

Associated Builders and Contractors (ABC) (http://www.abc.org/)
American Subcontractors Association (ASA) (http://www.assaonline.com/)
American Society of Concrete Contractors (ASCC) (http://www.ascconline.org/)
Better Business Bureau (BBB) (www.bbb.com)
California Building Industry Association (CBIA) (http://www.cbia.org/)...

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Associated Builders and Contractors (ABC) (http://www.abc.org/)
American Subcontractors Association (ASA) (http://www.assaonline.com/)
American Society of Concrete Contractors (ASCC) (http://www.ascconline.org/)
Better Business Bureau (BBB) (www.bbb.com)
California Building Industry Association (CBIA) (http://www.cbia.org/)
Contractors State License Board (CSLB) (http://www.cslb.ca.gov/)
California Department of Consumer Affairs (DCA) (www.dca.ca.gov)
Home Builders Association of Northern California (HBANC) (http://www.hbanc.org/)
National Association of Home Builders (NAHB) (http://www.nahb.org/)
National Association of the Remodeling Industry (NARI) (http://www.nari.org/)
North Coast Builders Exchange (NCBE) (http://www.ncbeonline.com/
National Systems Contractors Association (NSCA) (http://www.nsca.org/)
National Kitchen & Bath Association (NKBA) (www.nkba.org/)

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Industry Information
Contra Costa County Remodeling & Addition Contractor Information
Types of Remodeling Contractor Services Available in Contra Costa CountyTypes of Addition Contractor Services Available in Contra Costa CountyCities Served Zip Codes Served
exterior home remodelinghome additionsAlamo
Antioch
Bay Point
Bethel Island
Blackhawk
Brentwood
Briones
Byron
Canyon
Clayton
Clyde
Concord
Cowell
Crockett
Danville
Diablo
Discovery Bay
El Cerrito
El Sobrante
Hercules
Hilltop Mall
Kensington
Knightsen
Lafayette
Los Medanos
Maltby
Martinez
Moraga
North Richmond
Oakley
Orinda
Pacheco
Pinole
Pittsburg
Pleasant Hill
Point Richmond
Port Chicago
Port Costa
Rheem Valley
Richmond
Rodeo
San Pablo
San Ramon
Tara Hills
Vine Hill
Walnut Creek
Walnut Heights
West Pittsburg
94506
94507
94509
94511
94513
94514
94516
94517
94518
94519
94520
94521
94522
94523
94524
94525
94526
94527
94528
94530
94531
94547
94548
94549
94553
94556
94561
94563
94564
94565
94569
94570
94572
94575
94582
94583
94595
94596
94597
94598
94801
94802
94803
94804
94805
94806
94807
94808
94820
94850
custom home remodelingkitchen additions
master bathroom remodelingsmall home additions
ranch home remodelingsplit level home additions
green home remodelingcustom home additions
shower remodelingroom additions
residential remodelingranch home additions
commercial remodelingsecond story home additions
attic remodelingfamily room additions
living room remodelingmobile home additions
office remodelinggarage additions
interior remodelingmodular home additions
kitchen remodelingporch additions
home remodelingbathroom additions
bathroom remodelingsunroom additions
split level home remodelingmaster bath additions
basement remodelingprefabricated home additions