Deck Building in Maryland from Diamond Decks

screened in porchDiamond Decks & Home Improvement 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 outdoor lighting, but as a full-service contracting company, we also offer general home improvement services.

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 22 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 11 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.


  • "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

  • "Just wanted to express our thanks to Diamond Decks for a job well done. Our deck is absolutely beautiful, and is just how we envisioned. The crew that worked on our project had an obvious attention to detail. Min is a master of his trade, and he and the other guy (sorry, didn't get his name) worked their tails off to get the project done on time. We did have a little issue where we had to have some of the existing framing replaced, which added to the cost of the deck. But that was not anyone's fault, and Buddy was very clear to begin with that once the old decking was removed there could be some issues (which there clearly was). Over all Diamond was comparable to two other bids we received, and Buddy was sensitive to keeping the cost down, but still factored superb quality materials (Fiberon) in the price. The project was started ahead of schedule, and was completed on time. All in all, my wife and I would highly recommend Diamond, if quality at a reasonable cost is the goal. (I've learned years ago, cheapest is never the best). Hats off to Diamond Decks. Sincerely, Bruce and Susan Gaesser (Ellicott City)"
    Customer: Bruce and Susan
    Address: Ellicott City, Maryland
    Date: 07/06/2017

  • "Good job, nice deck"
    Customer: Fran
    Address: Owings Mills, Maryland
    Date: 06/15/2017

  • "The work that Diamond Decks did on our screened in porch, far exceeded our expectations! Our porch looks amazing and we attribute that to our initial consultations with Buddy, the superior workmanship of the construction team, and the continued consultations and suggestions from Bill. Everyone who sees the porch for the first time, is amazed!"
    Customer: Craig
    Address: Columbia, Maryland
    Date: 04/24/2017

  • "Very, very happy with the outdoor grill. Looks beautiful! Excellent company to work with. Very responsive, professional, and awesome!!"
    Customer: Bill & Cindy
    Address: Annapolis, Maryland
    Date: 04/20/2017

  • " Diamond Decks offered a competitive price for our deck and readily met our expectations and those of our HOA. The finished deck looks great and their crew was punctual and clean. Thanks for a great product! Satisfied customers... Paul and Pat Baker, Odenton, MD."
    Customer: Paul
    Date: 03/24/2017

  • "We were very happy with the process seamless!"
    Customer: Richard and Gayle
    Address: Monrovia, Maryland
    Date: 03/09/2017

  • "Diamond Decks was great! We used Diamond Decks to tear down an old deck and replace it with a new deck w/decking underneath while we were selling my mom's house. William Zinnert helped us with the proper paperwork for our HOA and pulled the permit for Howard County. They started the project when they said they would. They followed our suggestion of which side of the house to go around. The guys on the job were punctual, respectful and efficient. They did not cut any corners. They passed all inspections with Howard County. They cleaned up after the job was finished. William Zinnert was available at all times for questions. I highly recommend Diamond Decks for your next project. Katie Randolph"
    Customer: Kate
    Address: Columbia, Maryland
    Date: 02/09/2017

  • "The deck was installed very quickly. The manager in charge was helpful in getting the necessary paper work and approval to build the deck.He also gave us very good recommendations on the size of the deck, and giving us options on the steps vs. a larger deck. He was very pleasant to deal with. "
    Customer: Michelle
    Address: Ellicott City, Maryland
    Date: 01/18/2017

  • "The recent service call to replace some deck planks that were discolored went effortlessly for us. I had planned to move the deck furniture and potted plants away from the affected area but they beat me to it by coming earlier than expected. They even put everything back! Couldn't be more satisfied. "
    Customer: Guy
    Address: Laurel, Maryland
    Date: 01/16/2017