Top Rated Remodeling Contractors Serving Sunnyvale, CA

If you really care about choosing a quality remodeling contractor, we’re here for you. Here’s your access to the best remodeling contractors serving Sunnyvale including 94087, 94086, 94085, 94089 and 94088. These remodelers provide in-law suite additions and attic conversions, and they also work on tub to shower conversion, house remodeling and home expansions. For 22 years we’ve conducted the most accurate ratings and deepest research of local contractors, so you’ll be confident in choosing.

  • Last Updated Mar 04, 2026
  • 80,784 people sourced companies in Contractor - Remodeling & Additions
    6,081 Verified Contractor - Remodeling & Additions Customers Surveyed
6,081
80,784
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Best Construction provides a wide range of design/build construction services for residential and commercial clients in Santa Clara and San Mateo Coun...
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Main Services

Contractor - Custom Home Builder
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Contractor - Remodeling & Additions
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Additional Services

Design/Build Construction, Additions, Kitchen & Bathroom Remodeling, Commercial Maintenance & Repairs, Developer

Coverage Areas

Santa Clara County, San Mateo County

Family Owned
Family Owned
Established in 2004
Established in 2004
Residential & Commercial
Residential & Commercial
Appointments Available
Appointments Available
  • Quick Connect
Hours CLOSED NOW
License:
911607
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Golden State Designs remodels kitchens and bathrooms, builds room additions and accessory dwelling units (ADUs), and provides other general constructi...
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Main Services

Contractor - Remodeling & Additions
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Additional Services

Kitchen & Bathroom Remodeling, New Construction, Room Additions & Accessory Dwelling Units (ADUs)

Coverage Areas

Santa Clara County, San Mateo County, Alameda County, San Francisco County

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Hours CLOSED NOW
License:
1055272
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Sigura Construction, Inc. is a trusted name in high-quality residential and commercial construction across South San Francisco and Santa Clara, San Ma...
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Main Services

Contractor - Community Home Builder
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Contractor - Remodeling & Additions
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Kitchen & Bath Contractor
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Water & Fire Damage Restoration

Additional Services

Commercial & Residential, New Construction, Remodels & Additions, Insurance Repairs, Landscaping

Brands

Andersen, CertainTeed, Grohe, Hansgrohe, James Hardie, JELD-WEN, Kohler, Milgard, NanaWall, Sub-Zero, Thermador, TOTO, Wolf

Coverage Areas

South San Francisco, Half Moon Bay, Santa Clara County, San Mateo County, Alameda County

Residential & Commercial
Residential & Commercial
Free Quotes & Consultations
Free Quotes & Consultations
Appointments Available
Appointments Available
Diamond Certified Expert Contributor
Diamond Certified Expert Contributor
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Hours CLOSED NOW
License:
865155
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Clarity Construction remodels kitchens, bathrooms and whole homes; builds room additions; and provides other general construction services for residen...
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Main Services

Contractor - Remodeling & Additions
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Additional Services

Design/Build Remodeling, Kitchen, Bathroom & Whole Home Renovations, Room Additions, Deck Construction

Coverage Areas

The Bay Area

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License:
1124235
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Eun Mi Enterprise Inc., Elite Master Cal Builders provides a wide range of remodeling services for residential and commercial clients throughout Santa...
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Main Services

Contractor - Remodeling & Additions
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Additional Services

Kitchen & Bathroom Remodeling, Home Remodeling, Interior Painting, Exterior Power Washing, Decks, Basement & Garage Remodeling, Commercial Building Renovations, Accessory Dwelling Units (ADUs), General Contractor, Home Improvement Contractor, Design/Build Contractor, Room Additions, 3D Design & Rendering Services

Coverage Areas

Alameda County, San Francisco County, San Mateo County, Monterey County

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Hours CLOSED NOW
License:
975994
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Richard Gallardo Inc. offers a broad range of remodeling services to Santa Clara County homeowners, including additions, kitchens, bathrooms, cabinets...
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Main Services

Contractor - Remodeling & Additions
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Additional Services

Additions, Custom Home Remodels, Kitchen Remodels, Bathroom Remodels, Garage Renovations, Tub to Shower Conversions, Sunroom Additions, Accessory Dwelling Units (ADUs)

Coverage Areas

Santa Clara County

Family Owned
Family Owned
Established in 1995
Established in 1995
Residential Only
Residential Only
Free Quotes & Consultations
Free Quotes & Consultations
  • Quick Connect
Hours CLOSED NOW
License:
1101490
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D.R. Domenichini Construction is a full-service residential remodeling company serving clients throughout Santa Clara County. Founded in 2004, the com...
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Main Services

Contractor - Remodeling & Additions
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Additional Services

Kitchen, Bathroom & Whole Home Remodeling, Additions & Accessory Dwelling Units (ADUs), Handyman Services

Brands

Daltile, Emser Tile, GemCore, Jeffrey Alexander Hardware, Kohler, Monarch Plank, Panasonic, Reward, TOTO, Wellborn Cabinets

Coverage Areas

Santa Clara County

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Hours CLOSED NOW
License:
838530
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True Builders is a premier design-build firm specializing in kitchen and bathroom remodels, whole-house renovations, room additions, accessory dwellin...
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Main Services

Contractor - Remodeling & Additions

Additional Services

Kitchen and Bathroom Remodeling, Complete Home Renovation, Room Additions, Accessory Dwelling Units (ADUs), New Construction

Coverage Areas

Peninsula, South Bay, East Bay

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Hours CLOSED NOW
License:
1110631
Learn how to choose a Contractor - Remodeling & Additions and more…

Diamond Certified Remodeling Contractors Serve These Sunnyvale ZIP Codes

94087, 94086, 94085, 94089, 94088

Diamond Certified Remodeling Contractors In Sunnyvale

Diamond Certified remodeling contractors serving Sunnyvale are rated an average of 4.7 out of 5 stars based on 1457 reviews of 188 rated remodeling contractors.
Diamond Certified remodeling contractors in Sunnyvale Avg. Star Rating.

    Map of Sunnyvale, CA

    Sunnyvale was founded in 1850, and today, your 145,945 neighbors enjoy art markets, bowling, art classes, escape rooms and wildflower viewing. Sunnyvalians use Diamond Certified remodeling contractors for shower remodels, multi-room renovations, sunroom addition, second-story additions, room additions, and more.

    Frequently Asked Questions for Contractor - Remodeling & Additions in Sunnyvale, CA
    Q: What are clients of Diamond Certified remodeling contractors saying about contractors in Sunnyvale, CA?
    A: Verified Best Construction Customer, 1 of 21
    "They are great to work with, and they are not how a typical contractor would be, in that they delivered everything they promised. Great communication, honesty, and they were true to their word. I am happy with the end product." - Joel L.
    All Survey Responses for Best Construction
    Verified Golden State Designs Customer, 1 of 15
    "Golden State Designs was fantastic to work with on our home construction and renovation project. Their team was professional, reliable and truly committed to delivering high quality work. They made the entire process smooth, stress free, communicated clearly every step of the way and paid attention to all of the details that mattered to us. We’re so happy with the final results and would absolutely recommend Golden State Designs to anyone looking for a trustworthy and skilled team for their home project. What I liked best was how easy they made the whole process. Their communication was clear, their timelines were reliable and they always followed through on what they promised." - Kevin N.
    All Survey Responses for Golden State Designs
    Verified Sigura Construction, Inc. Customer, 1 of 151
    "They always do their best to make the customer satisfied, even if it requires extra work for them. They will not charge more money for these kinds of things. Ilan is very loyal and just a good person. He works to get the job completed without any drama or unexpected issues." - Zion K.
    All Survey Responses for Sigura Construction, Inc.
    Verified Clarity Construction Customer, 1 of 10
    "Very responsive, thorough and they make sure to write everything in the quote. I would recommend that you get multiple quotes and compare. They were unmatched compared to other contractors. They were direct with no nonsense. They weren't trying to sell you more, just what you needed. They were not the cheapest, but it was worth it. They were very quick." - Nick S.
    All Survey Responses for Clarity Construction
    Verified Eun Mi Enterprise Inc., Elite Master Cal Builders Customer, 1 of 10
    "They are very timely and they work really hard while being very careful with the work. They also go over all of the small details, so I understand what is going on. I'm not aware of all the small things, but they explained things to me so I could grasp what was going on. They go over each item step by step to make sure that I am informed. They are very comprehensive overall." - Andrew S.
    All Survey Responses for Eun Mi Enterprise Inc., Elite Master Cal Builders
    Verified Richard Gallardo Inc. Customer, 1 of 158
    "They are very honest, and when he says he's going to do something he does it. His subs are well qualified, and everything is always cleaned up. They did a bathroom for me last year, and they will be doing a master suite this year. They are always available to answer my questions. I have recommended them to several people." - Erika K.
    All Survey Responses for Richard Gallardo Inc.
    Verified D.R. Domenichini Construction Customer, 1 of 21
    "They're extremely organized, very professional and they look through the project ahead of time, so there's no complications. The employees" - Megan M.
    All Survey Responses for D.R. Domenichini Construction
    Verified True Builders Customer, 1 of 10
    "They were so professional. I really liked working with Nathan. I could really trust him. He gave us really good advice. It was more like family suggesting things more than anything else. Nathan would even tell us not to do some things, as it could just be a waste of money. They just did really great work and we enjoyed working with them. They were so great. Nathan and even Yafit were really good to work with. I already recommended someone I know to use them and they are also having a good experience with them. Overall, they are very professional and good to work with." - Harper V.
    All Survey Responses for True Builders
    Q: What are some of the most popular brands that Diamond Certified remodeling contractors use when working with Sunnyvale residents?
    A: Diamond Certified remodeling contractors use top-quality brands like Ryobi, Simpson Strong-Tie, Milwaukee, CertainTeed and Marvin.
    Q: What types of in-law suite additions do remodeling contractors offer?
    A: Remodeling contractors typically offer two types of second-story additions: bump-outs and full-room additions. Bump-outs are smaller additions that extend off the side of the home and typically add an extra bedroom, bathroom, or office. Full-room additions are much more substantial projects that involve the addition of a full second story. These additions can add additional bedrooms, bathrooms, and living areas to the home.
    Q: Can Diamond Certified remodeling contractors work with Bosch products and similar items so I can get in-law suite additions in Sunnyvale?
    A: Yes, Diamond Certified remodeling contractors can work with Bosch products and similar items to provide in-law suite additions in Sunnyvale.
    Q: What did people search for when they wanted to find the best quality remodeling contractors in Sunnyvale?
    A: Porch Additions
    Attic Conversions
    Exterior Upgrades
    In-Law Suite Additions
    Home Expansions

    Go to Area Guide

    Our Sunnyvalian's Guide to Local Quality

    Sunnyvale is our home and we love it! Here you’ll find the best spots to revisit, the Sunnyvale events schedule, local social media links, stories of our Sunnyvale area unsung heroes and much more. Connect with your neighbors and share what you love about our hometown. Plus, join us as a Sunnyvale Diamond Certified Preferred Member (always free).
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    Downtown Sunnyvale is known for its modern architecture and welcoming community atmosphere. Photo: Sundry Photography