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  • Deep Info™

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

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®. Companies must score 90+ on a 100 scale and pass all our credential-based ratings. By requiring such a high score to qualify, we cut out mediocre and poorly performing companies. Only the Best Pass the Test™.
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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
The 2020 Winter Diamond Certified Directory Update is Here!

Posted on January 21, 2020 by Matt Solis

Have you received your free copy of the 2020 Winter Diamond Certified Directory Update in the mail? It provides instant access to hundreds of local, top rated Diamond Certified companies across a wide range of service industries, from auto repair and home remodeling to optometry and dentistry.

Every Diamond Certified company must continue to deliver on its promises to you, the consumer. That’s why we conduct ongoing customer satisfaction research, perform credential-based ratings, monitor each company’s performance, and back you up with mediation and the Diamond Certified Performance Guarantee. Read more

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Posted in: Press Releases, Consumers, Diamond Certified News
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Diamond Certified Experts: How to Maintain Your Roof

Posted on January 14, 2020 by James Florence

Since your roof is above your sightline, it’s easy to ignore…that is, until it starts leaking. To avoid this situation, you’ll need to be diligent about maintaining your roof. Of course, like many homeowners, you may not know the first thing about roof maintenance. Not to worry—we’ve invited nine Diamond Certified Expert Contributors in the roofing industry to share their expertise on this topic. Read on to learn more! Read more

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Posted in: Roofing, Home Maintenance, Diamond Certified Experts

Eye Care After 40: Farsightedness

Posted on January 09, 2020 by Suzanne Carroll

After age 40, our eyes naturally begin to lose the ability to focus on near objects. The clinical term for this phenomenon is presbyopia, but the more common name is farsightedness. This condition can affect people who’ve never had problems with their vision before. With our growing reliance on smartphones and computers for our work and social lives, treating farsightedness is essential for daily comfort. Read more

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Posted in: Vision Care
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How to Artificially Age Wood

Posted on January 07, 2020 by James Florence

These days, the old-fashioned look is all the rage, especially when it comes to home décor. If you’re installing a new door, fence, deck or similar wood feature, you’ll be glad to know there’s an easy, low-cost technique to artificially age wood and achieve an antique aesthetic. Read more

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Posted in: Painting, Home Remodeling

LATEST PHONE SURVEY RESPONSES FROM VERIFIED CUSTOMERS
  • Bernice B.

    Verified customer
    Quality 10
    Loyalty Yes
    Helpful expertise Yes
    Critique

    I would urge a friend in need to give them a call. I thought they were friendly, informative, and competent. They have a great product that has helped me immensely.
    They did everything I needed them to do without question, and they have a product that has helped me more than I can begin to explain.

  • Beverly D.

    Verified customer
    Quality 10
    Loyalty Yes
    Helpful expertise Yes
    Critique

    We had a difficult situation. He kept his word, did a great job, and followed the directions that we provided to him.
    We had a difficult situation. He listened to us, went in, and took care of it. They answered the phone immediately, kept his word with when they'd arrive, and they worked with our small time frame.

    Response to Diamond Certified Company Vanish Integrative Pest Control, Inc.

THIS WEEK’S FEATURED DIAMOND CERTIFIED EXPERT CONTRIBUTIONS

Bryan Keding is manager of Floor Coverings International, a Diamond Certified company. He can be reached at (925) 679-5935 or by email.

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Bryan Keding: A Flooring Focus

By James Florence, Diamond Certified Resource Reporter

CONCORD — Bryan Keding entered the home improvement field as a young man, but it wasn’t until he joined forces with his brothers that his career really took off. “I started as a house painter,” he recounts. “My two brothers, Kreg and Reggie, also worked in the home improvement industry, and we eventually decided to go into business together. In 2007, we started a home remodeling company and later narrowed our focus to flooring installation. After some time, we realized we could provide better service if we had more control of the material side, so we added a franchise that would allow us to sell flooring as well as install it. Read more

Expert tip
The Impact of a Quality Floor Finish
CONCORD — When choosing a hard surface flooring product, a lot of homeowners focus on the thickness of the material. However, a more important attribute to look for in this type of flooring is the quality of the… Read more

Peter Breslin is owner of A1 Transfer Moving & Storage, a Diamond Certified company. He can be reached at (415) 742-1907 or by email.

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Peter Breslin: A Unique Opportunity

By James Florence, Diamond Certified Resource Reporter

SOUTH SAN FRANCISCO — Not long after moving to San Francisco from his home country of Ireland, Peter Breslin was given a unique opportunity to become a business owner. “I came to the United States when I was 25 and immediately started working in the moving industry,” he recounts. “During the next couple of years, I became friends with the owner of the company I worked for. He wanted to get out of the business, so he gave me the opportunity to buy it from him. I’ve been running things ever since—well over 30 years.”

Today, as owner of A1 Transfer Moving & Read more

Expert tip
3 Tips for Planning a Move
SOUTH SAN FRANCISCO — When it comes to moving, a little proactive planning can go a long way toward avoiding unforeseen problems. Here are three tips for planning your move: 1. Set aside sensitive items. Before you start… Read more

Paul Cooper is president of Pipe Spy Inc., a Diamond Certified company. He can be reached at (510) 493-7957 or by email.

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Paul Cooper: From Solar Panels to Sewer Pipes

By James Florence, Diamond Certified Resource Reporter

BERKELEY — For Paul Cooper, a short-lived career in the solar industry led to a long-term livelihood as a plumber. “I got started in plumbing after the demise of the first wave of the solar energy industry that blossomed from the mid-70s to the early ’80s,” he recounts. “President Carter installed solar panels on the White House and the government created tax credits for homeowners who did the same to their homes. I jumped on that wave and got into the solar business around that time. A few years later, when Ronald Reagan became president, he removed those panels that President Carter had installed. Read more

Expert tip
Sewer Lateral Compliance: The Basics
BERKELEY — If you’re planning to sell or remodel your home, one thing you’ll need to consider is sewer lateral compliance. According to requirements enforced by the East Bay Municipal Utility District (EBMUD), a sewer lateral must be… Read more

Gary Robertson is president of Robertson Renovations, a Diamond Certified company. He can be reached at (925) 276-5605 or by email.

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Gary Robertson: A Lifelong Builder

By James Florence, Diamond Certified Resource Reporter

WALNUT CREEK — Reflecting on a career that spans more than four decades, Gary Robertson says his beginnings as a builder go all the way back to childhood. “My grandfather was a builder in Canada, and when we visited, he would have me work with him on different projects,” he remembers. “During my teen years, I would work during the summer for various contractors doing things like painting and repairs. In 1976, I moved from my home state of Massachusetts to Northern California, where I started a small handyman business. Over the next few years, I got my painting and general contractor licenses and continued to grow my business into a full-scale remodeling firm.”

Today, Read more

Expert tip
Taking a “Hands-On” Approach to Home Remodeling
WALNUT CREEK — When it comes to remodeling, a lot of homeowners just point to a picture in a magazine and say, “I want that.” The problem with this approach is that the homeowner has no tangible experience… Read more

Darcy Quinn is owner of A and P Moving, Inc., a Diamond Certified company. She can be reached at (415) 669-4940 or by email.

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Darcy Quinn: An Early Involvement

By James Florence, Diamond Certified Resource Reporter

NOVATO — Darcy Quinn has been working in the moving industry since she graduated college, but her initial involvement goes back even further. “My dad has worked for Bekins Van Lines since 1966, so I grew up around the business,” she explains. “When I was a little girl, I would go with him on weekends when he was managing office moves—he would pay me 25 cents a day to help out. Later, during high school and college, I continued to work with him during summer and winter breaks. In 2000, around the same time I graduated from college, he purchased the Novato Bekins Agency from Bekins Van Lines and invited me to be his office manager. Read more

Expert tip
Planning Ahead for a Move
NOVATO — When planning for a relocation, the biggest mistake people make is waiting until the last minute to contact a moving company. Movers’ schedules fill up quickly, especially during the peak season, which runs from April through… Read more

Ted Liu is president of InVision Home Theater, a Diamond Certified company. He can be reached at (925) 257-4975 or by email.

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Ted Liu: A High-Definition Career

By James Florence, Diamond Certified Resource Reporter

CONCORD — Ted Liu’s involvement in the home theater and automation field started as a personal hobby but gradually developed into a full-time profession. “Several years ago, I installed an A/V system in my home,” he recounts. “I wanted the nicest system I could afford, and over time I continued to make it bigger and better. Friends and family started asking me to help them install similar systems in their homes. Before I knew it, I was going into business as an A/V contractor.”

Today, as owner of InVision Home Theater, Ted says his prior experience as a general contractor comes in handy with his latter-day career. Read more

Expert tip
How to Fix Spotty Wi-Fi in Your Home
CONCORD — If you own a large home, you’ve probably experienced issues with spotty Wi-Fi. This isn’t surprising: a standard Wi-Fi gateway is really designed for a small apartment, so it’s just not capable of providing a strong… Read more

Tyler Lau is owner of Concord Carpet and Hardwood, a Diamond Certified company. He can be reached at (925) 201-6399 or by email.

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Tyler Lau: Flooring for Life

By James Florence, Diamond Certified Resource Reporter

CONCORD — When asked how he got started in the flooring business, Tyler Lau says he’s been involved since he was a teenager. “My dad and my uncle opened a carpet store called Floor Masters when I was 17, and I started working there during the summers. After finishing college, I came back and worked in the office, where I learned about sales, estimating and other aspects of running a business. After about 10 years, I took a brief hiatus from the industry, following which I opened my own flooring store in Concord.”

Today, as owner of Concord Carpet and Hardwood, Read more

Expert tip
Debunking Misconceptions About Engineered Hardwood Flooring
CONCORD — There are a lot of misconceptions when it comes to engineered hardwood flooring (also known as prefinished hardwood flooring). Let’s look at a few and set the record straight. “Engineered hardwood doesn’t contain actual hardwood.” All… Read more

Miro Bokaric is owner of BV Electric Inc., a Diamond Certified company. He can be reached at (415) 868-4970 or by email.

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Miro Bokaric: Driven to Succeed

By James Florence, Diamond Certified Resource Reporter

SAN FRANCISCO — Miro Bokaric has always possessed a drive to succeed, but it wasn’t until he immigrated to the United States that he achieved his career objective. “I’m originally from Bosnia,” he explains. “My whole life, I’ve never stopped working. I got my first job as a kid digging trenches for a contractor. When I got older, I attended electrical school and became a qualified electrician.” However, just as Miro was getting started in his new career, war broke out in Bosnia. “When the war started, my wife and I decided to leave and relocate to the United States,” he recounts. Read more

Expert tip
Electrical Upgrades for a Kitchen Remodel
SAN FRANCISCO — Are you remodeling your kitchen? If so, you probably want to upgrade your lighting fixtures and appliances. However, if you live in an older home, there’s one thing you may be forgetting: your electrical panel.… Read more

Jason Patterson is owner of See Through Glass & Door, a Diamond Certified company. He can be reached at (707) 219-8315 or by email.

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Jason Patterson: A Clear Trajectory

By James Florence, Diamond Certified Resource Reporter

PETALUMA — An early introduction to the glass industry gave Jason Patterson a clear trajectory for his professional career. “I started working with a glass company in San Rafael when I was 16,” he remembers. “It was a good fit and I enjoyed the work, so I just stuck with it. Over time, I continued to learn about different aspects of the industry, from windows to glass doors and shower enclosures. After high school, I spent some time in retail management, where I gained valuable experience in customer service. In 2018, my wife, Margaret, and I started our own glass business.”

Today, Read more

Expert tip
Learning About Your Shower Glass Options
PETALUMA — Whether you’re installing a new shower or remodeling an existing one, you’ll need to choose a glass product. The two most commonly used shower glass products are standard tempered glass and starphire glass. The biggest difference between… Read more

Dominic Capito is owner of Elite Plumbing Services, a Diamond Certified company. He can be reached at (707) 676-3937 or by email.

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Dominic Capito: An Early Opportunity

By James Florence, Diamond Certified Resource Reporter

SANTA ROSA — Thanks to a family connection, Dominic Capito got an early start in what would eventually become his career. “I first started plumbing during the summer between sixth and seventh grade,” he remembers. “We had a family friend who was a plumber and he offered me an opportunity to learn the trade. I spent the next several summers working for him. At first, I wasn’t thinking about it in terms of a future career—I just enjoyed fixing things. Plus, the pay was pretty good for a kid my age!”

Following high school, Dominic dove headfirst into full-time plumbing work. Read more

Expert tip
Tankless Water Heater Maintenance
SANTA ROSA —It’s well known that traditional water heaters need to be flushed regularly, but few people realize this is also necessary for tankless water heaters. In fact, it’s even more important for tankless units because they have… Read more

Chitra Bheeman is vice president of Advantage Moving & Storage, a Diamond Certified company. She can be reached at (408) 840-3997 or by email.

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Chitra Bheeman: A Personal Move

By James Florence, Diamond Certified Resource Reporter

MILPITAS — With a background in business development, Chitra Bheeman has always preferred interacting with people to crunching numbers. That was one of the main reasons she decided to get into the moving industry—that and her husband needed the help. “When my then-fiancé Brian first started Advantage Moving & Storage, I helped him and his partners get things up and running,” she recounts. “A couple of years later, after the two other partners left, I quit my job and joined the business full-time. Since then, I’ve particularly enjoyed the interpersonal aspect of the job. While I also worked with people in my prior career, Read more

Expert tip
How to Avoid Unlicensed Movers
MILPITAS — A huge issue plaguing the moving industry today is unlicensed, fly-by-night movers. In the past, these illicit operators would mainly advertise on websites like craigslist, but nowadays, many are using high-profile resources like Google AdWords to show… Read more

David Tetrault is vice president of Modern Paving, Inc – Peninsula, a Diamond Certified company since 2013. He can be reached at (650) 564-3217 or by email.

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David Tetrault: A Northwest Progression

By James Florence, Diamond Certified Resource Reporter

SAN MATEO — For David Tetrault, a westward relocation precipitated a northward advancement in his professional career. “I’m originally from Massachusetts, where I got my start in the construction industry,” he says. “In the mid-2000s, I decided to pack up my tools and move to California. Initially, I got a job as a carpenter, but I soon realized that if I wanted to get ahead, I’d need to go into management. Someone suggested that I get into the hardscaping industry, so I took a job as a project manager for a local paving company. It was a pretty seamless transition, Read more

Expert tip
Identifying Water-Related Issues Before You Build
SAN MATEO — If you’re planning to install a new driveway, patio or similar hardscape feature, take the time to look for potential water-related issues. Water can be very effective at breaking down what you’ve built, so it’s… Read more