Maryland Deck Building, Patio Construction, Hardscapes and More

We’ve made a name for ourselves in the Maryland area providing high-quality decks, patios, screen enclosures, hardscapes, and so much more. Diamond Decks boasts not only masterful construction but also great customer service. We can also provide design or redesign services for your deck, patio, or hardscape.

We use only top-quality products by manufacturers like Fiberon®, AZEK®, TREX®, and TimberTech® because our experience has taught us that these materials make for the highest-quality and longest-lasting decks and patios.

If you’re interested in learning more or just inquiring about your options, contact Diamond Decks today!

DeckDeck Design and Deck Building

We started with decks and we’re proud to be certified as master deck builders through the North American Deck and Railing Association (NADRA), an industry group that promotes safe, affordable, and high-quality deck building. We don’t build cheap decks because we believe in quality over quantity. And that’s why we provide a five-year warranty for our products—five times the industry standard.

Deck Cleaning and Sealing

Diamond Decks is your solution for keeping your existing deck looking great year after year. Our deck restoration and maintenance crew uses only the best available cleaners and sealants and we have over 20 years of experience in maintaining:

  • Decks
  • Patios
  • Fencing
  • Vinyl siding

Paver Patios and Walls

Let us create a unique paver patio for you. Because we are professional deck builders and general contractors, we can complement your patio with a sitting wall, a built-in kitchen, or even a fire pit, and you can be confident in the quality and durability of these additions. We can also add lights, walkways, and retaining walls to fit your landscaping design needs for a complete look.

For the best quality work, we install products by:

Screened Decks and Open Porches

We can turn your open deck into a screened porch using low-maintenance products to provide year-round use. With our materials, you don’t have to paint or stain your screened porch and you can easily replace the screens without having to remove the trim boards.

For your convenience, we can provide a basic screened porch with an open ceiling or can complete the project with a beaded vinyl ceiling, skylights, and ceiling fans.

DreamspacE® Four-Season Patio Enclosures


Diamond Decks is pleased to collaborate with DreamspacE® to provide incredible all-season sunrooms for our customers. We chose DreamspacE® patio enclosures because of their wealth of features, high-quality materials, and variety of options.

brun3Landscape, Deck and Patio Lighting

We have a lot of experience providing custom lighting installation and design for a variety of outdoor spaces. We see these accents as an essential element of a great deck, patio, or hardscape and will work hard to provide lighting that matches the beauty of your new landscape.

Learn More About Our Services

We are proud to provide incredible customer service from the first phone call to the last nail. If you’re interested in learning more or just inquiring about your options, contact Diamond Decks today! We’ll be glad to speak to you.

Our Service Area

We build amazing custom decks and outdoor environments throughout Maryland, including: Annapolis, Bethesda, Columbia, Crofton, Davidsonville, Elkridge, Ellicott City, Frederick, Gaithersburg, Gambrills, Hanover, Millersville, Olney, Pasadena, Potomac, Rockville, Severn, Severna Park, Silver Spring, Upper Marlboro.


  • "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