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Deck Building in Maryland from Diamond Decks

Diamond Decks is a small, locally owned and operated contracting company serving the greater Baltimore and DC areas. We are best known for deck building, patio building, and motorized louvered roofs.

All of our satisfied customers can attest to the quality workmanship and professional attitude we bring to every job. We offer a five-year warranty—five times the industry standard—because we believe in building products that last.

As a testament to our work, we are happy to provide you with references upon request. Contact us today to learn more about our services or to set up an appointment.

A Different Kind of Deck Builder

If you’re tired of the “hard sell” tactics of the larger home improvement companies, then we are the company to work with. When you choose Diamond Decks & Home Improvement, you work directly with the owner throughout the design and construction process. We provide an on-site, stress-free design consultation and free estimate and tailor all service to suit your needs.

You can count on us to stick with you, from the initial design process to the last nail—and beyond. We take pride in our decks, using high-quality materials that last a lifetime. We don’t build cheap decks because we believe in quality over quantity.

Diamond Decks is a certified master deck builder through the North American Deck and Railing Association (NADRA), an industry group that promotes safe, affordable, and high-quality deck building.

Choose the expert deck builders at Diamond Decks & Home Improvement in Severn, Maryland, for quality work and lasting results.

A Few Words from Our Owner

Because I am so sure you will love our personal attention and the quality of our work, I am offering a five-year labor warranty on all our low maintenance deck work. We have been building decks for more than 25 years and have many satisfied customers. For the utmost in service, I will also match all warranties given by my competitors.

Bill Zinnert

Owner Bios

Bill Zinnert: President

Bill’s construction training began alongside other craftsmen, building decks and doing general home improvement work. He soon realized that he had a real knack for building decks. He also noticed that there weren’t a lot of local deck builders who offered quality products, timely installations, and personalized customer service.

It was this lack of great customer service that drove his decision to open a home improvement company that focused on building great decks.

Bill’s philosophy is to treat the customer the way he would want to be treated. His goal for every project was to start on-time, provide quality craftsmanship, and complete the job in a timely fashion. Twenty years later, he’s been able to provide this unmatched level of customer service on every job. Over the past two decades, Bill has developed a network of professionals within the industry that enable him to provide almost any service needed. Although at Diamond Decks, we are known for our beautiful decks, screened porches, and paver patios, we are also a full-service home improvement company that can remodel basements and kitchens, replace windows, doors, and siding, and much more.

Bill joined NADRA to keep up with the latest deck building news and innovations, but it was this association that led to the certification of Diamond Decks as one of Maryland’s first Master Deck Professionals. Diamond Decks is also an accredited member of the Better Business Bureau.

Buddy Goetzger: Vice President

Buddy joined Diamond Decks & Home Improvement in 2008. He has 15 years of experience in the home improvement industry and a lifetime of experience in the customer service business.

Prior to pursuing a home improvement career, Buddy owned and operated The Inn at Glen Echo restaurant in Glen Echo, Maryland from 1985 until 2002. After finding out that he and his wife Erin were having twins, he decided it was time to venture into a career that was a little less time-consuming than the restaurant business.

With a lifetime dedicated to customer service, Buddy is passionate about ensuring 100 percent satisfaction for each and every Diamond Decks client. He enjoys the experience of meeting new customers and working together to design the perfect complement to a homeowner’s outdoor living space.

Buddy is extremely proud to be employed by a company that has such dedication to attention to detail and customer satisfaction.


  • "We recently hired Diamond Decks to build our Deck. Our experience with them was very good. Right from the beginning of the Sales cycle to the end of construction, they made sure we were satisfied with the product, construction quality and answered all our questions. Their work-crew was very professional and worked even in cold or inclement weather in light drizzle. They were very responsive in providing support once the deck was delivered. "
    Customer: Kemal
    Address: Burtonsville, Maryland
    Date: 01/10/2017

  • "We had an excellent experience with Diamond Decks! They were reasonably priced, comparing to the quotes from two other contractors. They were around the middle, but offered more features, a great warranty on workmanship and had better ratings. The work included complete tear-down of an existing deck and putting up the new composite deck. Buddy came out and gave us an in-depth analysis for what was necessary to replace our existing deck with Fiberon decking with a full lighting package. He listened to all our concerns and answered them directly putting our minds at ease. Bill's team was on-site almost every day for two weeks (except Sundays) to make sure the project was moving forward, and Bill came out to ensure the project was meeting our expectations and was easily reachable via cell if we had any questions. I wouldn't say we're high maintenance, but when you're spending a good bit of money on a home renovation, it's great to be able to ask all the minutia questions so there are no surprises. Despite some updates which the inspector asked for (which honestly, were minimal), the deck was completed on-time without issue. Diamond Decks came out and made the updates the inspector requested, but, as mentioned, they were minimal. My wife and I would definitely recommend Diamond Decks to others!"
    Customer: Michael
    Address: Columbia, Maryland
    Date: 01/10/2017

  • "On time, excellent materials and installation. Really good design advice. Reasonable price."
    Customer: Elon
    Address: Annapolis, Maryland
    Date: 01/09/2017

  • "Excellent service! Buddy helped us every step of the way. We love our patio. The crew noticed a crack in one of the stones (something we didn't notice) and replaced it immediately. "
    Customer: Tiffany
    Address: Bowie, Maryland
    Date: 01/09/2017

Diamond Decks200 Verified Reviews


  • "My wife and I are very pleased with our recent experience with Diamond Decks. Our interaction with everyone from the company was great from the schedulers on the phone to the men who did the work. William remained in close communication with us until the job was completed and we were satisfied. The deck itself is beautiful and of excellent quality. We will be recommending Diamond Decks to everyone we know. -Kev Mitchell, Piney Orchard, MD"
    Customer: Kevin and Winnie
    Address: Odenton, Maryland
    Date: 07/18/2017
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