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    • Upgrades to Reduce Your Home’s
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  • Accurate Ratings

    Local companies rated
    Highest in Quality and Helpful Expertise™

  • Performance Guaranteed

    We're local and here to help
    you, backing you up if needed.

  • Deep Info™

    Researched company reports.
    Essential articles and videos by topic experts.

LOCAL CONSUMERS AND COMPANIES RELY ON THE DIAMOND CERTIFIED RESOURCE

Barbara Schallau Consumer
Bay Area

Hany Louis CEO/General Manager
The Tile & Grout King Inc.

Jagdish Hegde Consumer
Fremont

Leigh Bakhtiari President
City Carpets

Cecile Monfort Consumer
San Jose

Mark Corrallo President
All Seasons Construction

Jim Baylor Consumer
Bay Area

Bev Oliver Consumer
Bay Area

Gifford Teeple Owner
A Reliable Handyman

Tami Aviles Consumer
Bay Area

Tommy Herren Owner
The Lighting Geek

BROWSE BY MAJOR CATEGORIES
WHY CHOOSE A DIAMOND CERTIFIED COMPANY?
Watch this video on the Diamond Certified Resource: the most accurate and trustworthy way to find local companies rated Highest in Quality and Helpful Expertise.
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We’ve all felt the joy of choosing a good local company and, unfortunately, the pain when we mistakenly choose a bad one. The problem is, every company claims to be good, yet despite these glowing claims some provide inconsistent quality while others are downright unscrupulous.

We’ve solved this problem for you with the Diamond Certified Resource. Only local companies independently rated Highest in Quality and Helpful Expertise™ earn Diamond Certified. Our rigorous rating and certification process starts with the in-depth pass/fail rating of each company’s customer satisfaction, license and insurances. Most companies can’t pass our rating and earn Diamond Certified, and every Diamond Certified company must continue to deliver on its promises to you, the consumer. That’s why we conduct ongoing customer satisfaction research and credential-based ratings and monitor each company’s performance.

Every Diamond Certified company is backed by our powerful Performance Guarantee, so you’ll feel confident in your choice when you use our always-free web resource or Diamond Certified Directory. If you try unsuccessfully to resolve a disagreement with a Diamond Certified company, our mediator will work with you and the company to attempt to reach an agreement that both parties can live with. If the mediation fails to produce a mutually agreeable solution due to failure of the Diamond Certified company to honor contractual obligations, uphold industry standards or participate in good faith, we will refund your purchase price up to $1,000.

Each time you visit diamondcertified.org, you’ll see each Diamond Certified company’s Deep Info, including researched company rating reports, verbatim survey responses, essential articles, photo galleries, videos and expert tips. We put all the information you need to choose a company in one place, and no other web page can match this depth of information.

When you choose a Diamond Certified company, you’ll never be fooled by fake or cherry-picked reviews because we survey a large, random sample of each company’s customers by telephone (typically 100 surveys) to get the most accurate ratings and verify only real customers are responding. Company owners can’t cherry-pick by telling friends and selected customers to post 5-star reviews on our site—we don’t allow it.

So, if you want quality, you’ll have confidence in choosing a Diamond Certified company. We encourage you to visit this website on a regular basis to find updated ratings on top rated companies in your area, see verbatim survey responses on each Diamond Certified company, and read thousands of industry-specific expert articles and tips. We care about customer satisfaction, and we care about you. We’re proud to give you all the information you need to choose with confidence.

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WHAT’S IN EACH DIAMOND CERTIFIED COMPANY REPORT?
SAMPLE COMPANY REPORT

Each Diamond Certified Company Report gives you the most accurate and comprehensive Deep Info available for each company. It includes proof of Diamond Certified status, rating charts, verbatim survey responses, essential articles about the company, a capabilities table, a Diamond Certified Video Profile, key photos, company owner expert tip contributions and more. Click on the graphic to learn more

  • ACCURATE RATINGS

    We survey a large, random sample of each company’s customers by telephone to get the most accurate ratings...

    VERBATIM SURVEY RESPONSES

    In addition to providing rating scores for Quality, Intent to Return and Helpful Expertise, each surveyed customer is...

    VIDEO PROFILE

    You get to see the company in action, meet the managers, and learn as they describe their specialties and customer...

    ESSENTIAL ARTICLES

    You can choose to scan or go deep into these five researched articles on each Diamond Certified company: Company...

    CAPABILITIES TABLE

    Each company’s key info is logically organized within this table. You’ll find this system of display gives...

    TOPIC-BASED EXPERT CONTRIBUTIONS

    Top rated local company owners are experts in their fields, and they’ve written topic-based expert articles and created...

    PHOTO GALLERY

    If a picture is worth a thousand words, how about an entire portfolio? You’ll get a better sense of each company once...

    COMPANY WEBSITE & EXTERNAL FEED

    This is a good place to go if you want to do extra research on a company. Here you’ll find a link to each company’s...

DIAMOND CERTIFIED CONSUMER INFORMATION AND RESOURCES
DIAMOND CERTIFIED BLOG
Video: The Benefits of Dental Implants

Posted on December 14, 2017 by James Florence

Earlier this week, we posted an article about modern innovations in dental technology. One of the innovations referenced was dental implants, a technology that has vastly improved both the aesthetic and practical attributes of dental prosthetics. To learn more about dental implants and how they work, watch this video by Dr. Alfred dela Cruz.

 

 

 

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Posted in: Dentistry, Diamond Certified Experts
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Diamond Certified Experts: Innovations in Dental Technology

Posted on December 12, 2017 by James Florence

In our scientifically advanced age, technology is altering the landscapes of many professional fields. The dental field is no exception, with innovation yielding improved methods and products for treating age-old problems. To learn more, we’ve asked six Diamond Certified Expert Contributors to expound on some of these innovations in dental technology.

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Posted in: Dentistry, Diamond Certified Experts
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Take Advantage of Your Health Care Benefits Before the End of the Year

Posted on December 07, 2017 by Suzanne Carroll

As the year comes to a close, many of us have money on our minds. Maybe you’re mulling how much to spend on gifts or how much to donate to your favorite charity. As you draw up your end-of-year accounts, one thing to consider is your health insurance benefits. If you’ve been putting off seeing your physician, optometrist, dentist or chiropractor, you may want to make an appointment before January. There are two reasons why December is a crucial time to plan for health care costs: 1) deductibles will reset in January and 2) it’s your last chance to use any money you’ve put in a Flexible Spending Account (FSA). Read more

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Posted in: Health Tips
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Giving Well: Advice for Holiday Charity

Posted on December 05, 2017 by James Florence

The holidays represent different things for different people, but there’s one seasonal sentiment that’s universally shared: generosity. This can be seen in the annual outpouring of monetary goodwill that transpires as people from all walks of life open their hearts by opening their wallets. Naturally, charitable organizations haven’t overlooked this custom, which is why you’re likely to find your mailbox, inbox and social media feed teeming with donation requests this time of year. However, with so many solicitations coming from all directions, it’s hard to discern where to direct your generosity. We’ve teamed up with Chris Bjorklund, The Savvy Consumer, to provide some advice for giving wisely during the holidays. Read more

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Posted in: Holiday Related, Savvy Tips
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LATEST PHONE SURVEY RESPONSES FROM VERIFIED CUSTOMERS
  • Amanda P.

    Verified customer
    Quality 10
    Loyalty Yes
    Helpful expertise Yes
    Critique

    They are the most honest repair shop that I've ever been to.
    It's usually a really fast turn-around. If I do have an emergency, Wayne will always make the time for me.

    Response to Diamond Certified Company Wayne & Son's Automotive Repair

  • Monica G.

    Verified customer
    Quality 10
    Loyalty Yes
    Helpful expertise Yes
    Critique

    They are extremely helpful and they make events at our company go very smoothly.
    They have competitive prices and of all the caterers we have used in the past, they are the ones who have fulfilled our needs.

    Response to Diamond Certified Company Darryl Scotti Events, Inc.

THIS WEEK’S FEATURED DIAMOND CERTIFIED EXPERT CONTRIBUTIONS

Bill Hinkamp is owner of Rockridge Builders, a Diamond Certified company since 2002. He can be reached at (510) 761-6917 or by email.

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Bill Hinkamp: Designing and Building a Career

By James Florence, Diamond Certified Resource Reporter

OAKLAND — Even while studying architecture in college, Bill Hinkamp never lost his love for construction. Later, he would merge his dual interests into a single professional venture. “I’ve always been involved in construction and I continued to be attracted to the industry during my time at UC Berkeley,” he affirms. “Since I was studying architecture, I increasingly began to see construction as a design/build discipline, which would inform my later career.”

Following college graduation, Bill went to work for an architectural firm, but it wasn’t long before he found himself involved in construction once again. Read more

Expert tip
Getting Ready to Meet with a Remodeling Contractor
OAKLAND — If you’re planning a remodeling project, one of your first steps should be to meet with a contractor. However, in order to make the most of your initial meeting, it’s best to be prepared by having an idea… Read more

Andrea Vernerova is property manager at CM Property Management Inc., a Diamond Certified company since 2014. She can be reached at (408) 763-3540 or by email.

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Andrea Vernerova: A Lasting Impact

By James Florence, Diamond Certified Resource Reporter

SAN JOSE — After several years as a real estate agent, Andrea Vernerova realized she could have a more lasting impact as a property manager. “I got into real estate because I liked the idea of helping people achieve their goals of homeownership,” she recounts. “During my time as a real estate agent, I met a lot of people who managed properties. Property management was very attractive to me because, unlike real estate, you don’t just help a client one time and say goodbye—you’re able to continue helping them on a long-term basis. Eventually, I decided to trade my career as a real estate agent for one as a property manager.”

Ten years after becoming a property manager, Read more

Expert tip
Property Manager Responsibilities
SAN JOSE — A property manager has several responsibilities, both during and between tenancies. Here are just a few of them: Prepare the rental property. When a rental property becomes vacant, the property manager oversees preparations for the next tenants.… Read more

Mark Katz is property manager at CM Property Management Inc., a Diamond Certified company since 2014. He can be reached at (408) 763-3540 or by email.

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Mark Katz: Service-Oriented

By James Florence, Diamond Certified Resource Reporter

SAN JOSE — After 18 years as a property manager, Mark Katz looks back on his introduction to the business. “I used to be in finance, marketing and operations,” he recounts. “In 2000, I had an opportunity to get into property management, so I took it. What I really liked about being a property manager was the variety—you’re presented with a new challenge every day, so it never gets boring.”

In 2010, Mark decided to strike out on his own and founded CM Property Management Inc. “I wanted to have a property management company that focused on developing relationships with property owners, Read more

Expert tip
4 Benefits of Using a Property Management Company
SAN JOSE — Managing a rental property can be a difficult task, which is why the aid of a property management company can be of significant value. Consider the following advantages: 1. Better tenant screening A property management company has… Read more

Heidi Hart is president of Heidi Hart – California Dreaming Real Estate, a Diamond Certified company. She can be reached at (831) 708-8910 or by email.

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Heidi Hart: A Perfect Opportunity

By James Florence, Diamond Certified Resource Reporter

SANTA CRUZ — As a young mother of three, Heidi Hart knew that any career she pursued would need to have a flexible schedule. When she was offered a job in real estate, she knew it was the perfect opportunity. “I got my real estate license when I was 25,” she recounts. “It actually started when I was offered a job at a real estate office across from my kids’ school. Besides being in a convenient location, the hours were flexible, which allowed me to be available for my kids while also being actively involved in my community. I found that I really enjoyed the real estate business and I’ve been doing it ever since.”

Today, Read more

Expert tip
How to Establish Your Home’s Value
SANTA CRUZ — If you’re planning to sell your home, you’ll need to establish its value in order to determine the right asking price. In the real estate market, this is done using a statistical report called a Comparative Market… Read more