Custom Homebuilding

Custom Homebuilding

Whether you want to recreate a house you love or start from scratch, we can build your dream home.

Remodels and Additions

Remodels and Additions

We can handle whole-home remodels and additions of all sizes.



Read our client testimonials to see why they trust us to build their homes.



Reach out to us now to learn more about our comprehensive services.

Spend Your Vacations in Style

Speak with our custom homebuilders in Bethany Beach & Ocean View, DE today

Your Dream Vacation Home Awaits & Our Builders Can Make it a Reality!

Custom House Design, Home Remodeling & Home Additions in Bethany Beach & Ocean View, DE

Vacations are meant to be relaxing. It’s a time to unwind with friends and family. You deserve a space that allows you to do that with ease. Create a home dedicated to fun in the sun and late summer nights with Mark Dieste Design Build, LLC.

To learn what we can build for you, speak with our custom home builders today. Our builders offer the best in custom built homes & home remodeling in Bethany Beach & Ocean View, DE and the surrounding area.

Everything you need to get the home you've always imagined

Mark Dieste Design Build takes pride in every house we work on. We can help you with a variety of custom home services, including:


Whole-home building, where we work with you to design your new house


Room or home remodeling, to improve your existing house


Home addition, to add some extra space to your house

We Focus on Your Needs

Get the attention you deserve from your dedicated builder

We serve Bethany Beach & Ocean View, DE and the surrounding areas, including Fenwick Island and Rehoboth Beach