Mark Dieste Design Build LLC - Bethany Beach, Delaware

Carol B.

We bought our Mark Dieste home in Bethany Beach 25 years ago and we feel that we were extremely lucky to have found such a high quality builder with great attention to detail. We love our house! They continue to help us to this day with both minor and major renovations; we wouldn’t think of using another builder. Our house is perfect for our family, especially now with a completely remodeled kitchen and additional bathroom upstairs. The Dieste family provides a high level of service, great advice and thoughtful suggestions and we are thankful for our relationship built over many years.

Shane G.

I’ve had the pleasure of working with Mark Dieste Design Build on several projects as their tile installer, and I can’t recommend them highly enough. Their professionalism, attention to detail/scheduling, and commitment to quality is refreshing to work with. Mark communicates clearly, works tirelessly to stay on schedule, and always encourages that every aspect of the construction is done to the highest standards. It’s always a smooth and positive experience working with Mark Dieste Design Build, and I look forward to continuing our partnership on future projects.

Elizabeth C. H.

I highly recommend MDDB. Our new home was just completed. It is stunning. Having used them for remodeling at another house, I am 100% assured of the high quality of workmanship.

Throughout the process, I found the Deistes to be excellent communicators, very responsive, and problem solvers. When there was a decision to be made, they were very helpful in presenting the options and pros and cons of each choice.

Laurence P.

We used Mark Dieste Design Build twice, once in 1999 when we restored our original beach cottage in Bethany Beach that had been vacant for 12 years into a wonderful second home. They took it down to the studs, reconfigured, added a bedroom and bathroom upstairs, and were able to keep a lot of original materials. A little less than 20 years later we again used them to build an addition, adding two bedrooms and one bath and creating an open concept on the first floor. And for all of the years in between and after, they have been there to help us with repairs and the like. They basically became part of our extended Bethany Beach family. Highly recommend.

Larry Platt and Clare Herrington

Michael W.

It has been a complete pleasure to work with and complete another project with Mark Dieste Design Build at our Bethany Beach home. We engaged with Mark Sr. in 2000 to remodel and add on to our 1945 vintage residence and we were totally satisfied with that experience. When we decided to improve our property again in 2023, we knew contacting MDDB was the only call to make.

Under the guidance of Mark Sr. and Mark Jr., and with the design help of architect Greg Hastings, we broke ground for a new pool house/garage/loft in September of 2023 and completed the project in June of 2024.

All phases of the project were managed in a very hands-on fashion. Mark Jr. was present daily and on the majority of days, he inspected the project multiple times each day. Communication with Mark was constant, concise, and led to consistent progress without re-do's and change orders. Mark Sr. was also on sight often offering input for decisions. Subcontractors were reliable and fulfilled their various roles with quality work. Accounting and billing were itemized precisely while questions were welcomed and greeted with detailed explanation.

Quality work, great communication, achieving goals on timing, and enthusiasm from start to finish are just some of the reasons we highly recommend others to strongly consider Mark Dieste Design Build for their next home/home improvement project.

Michael & Sandy Wilgus

BJ S.

Our first renovation with Mark Dieste Design Build was in 2019. We were so pleased with the job that we hired them again in 2021 to do a much larger remodel which involved raising our house and building an additional level. From start to finish, the Dieste team was professional and reliable. Communication was excellent - they were always available and took the time to address our concerns and provided us with information every step of the way. We were living in another state during the renovation and Mark sent pictures and videos of the progress. We came to Delaware frequently to check in and found the job site always clean and the sub-contractors were top notch. We are so happy with our dream beach home and would highly recommend the Dieste team!

Thomas M.

Mark Sr and Mark Jr were a great team to work with for the remodel and update to our home that was built in 1992. They started the 2.5 month project on July 31st and they finished within 2 days of the original target, even with additional work that we had requested after the project has started. They were super responsive, great at communicating and had ideas and suggestions which we so much appreciate now that we are living full time in our remodeled house. Mark Jr was on site every day and their subcontractors were top notch and kept the project area clean, which our neighbors appreciated. Mark Jr and Mark Sr stop by periodically to check-in on the house after the project was completed. We had developed a very trusting relationship with them. We would highly recommend Mark Dieste Design Build to anyone wanting to remodel or build a new home.

Dave D.

We contacted Mark Dieste Design Build when we first signed our contract to purchase our home in The Greens. The home was built new in 1996 and needed some remodeling. Mark had his architect come out before we settled to see what walls could be knocked down and to put together a plan that would make this our home. We settled on a Friday and Mark had his crews here on Monday morning. Carpenters, electricians, plumbers, tile and counter top craftsmen and painters all worked in concert to complete the remodeling in the 45 days as promised. Mark and Mark Jr were true professionals, they exceeded our expectations from start to finish. We would highly recommend Mark Dieste Design Build for any remodeling project you may have. 5 STARS!