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Dewson Construction Company

Dewson Construction Company

Home Builders
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About Us

Tim Dewson and John McMahon began Dewson Construction Company, based in Wilmington, Delaware in 1993, after seeing the need for a hands on, relationship driven approach to building and renovating custom homes. At Dewson we know that building a home is a personal journey for the client - this is where their clients will raise their families, make their memories and spend their valued free time. Our focus on the client, their dreams and desires is what has fueled our success in becoming the area’s premier custom home builder, home renovator and general contractor. Dewson’s quality, attention to detail and customer service is truly unmatched. Dewson’s revered reputation is also attributable to the best internal crafts force in the country. Our own master craftsmen love what they do and their love is very evident in the fine woodwork that they produce. Fine craftsmen like this are a rare breed today. While Dewson is a superior builder, we also focus on maximizing our client’s money. Our long and established relationships create buying power with our vendors and subcontractors and enable us to be very competitive in the bidding process. Additionally, we use the latest technology both in the field and in the office to manage the planning and building phases as efficiently as possible, creating better communication for the client and better process management for all. With Dewson’s strong customer relationships, superior quality, old world craftsmanship and eye on value, we are the obvious choice to help you build or renovate your dream home. We are proud to say that we consistently exceed the expectations of each of our clients. Dewson Construction Company’s portfolio includes stately manor homes and estates in southeastern Pennsylvania and Delaware, along with classically styled coastal homes in Rehoboth Beach, Delaware, Stone Harbor and Avalon in New Jersey and the Eastern Shore of Maryland.

Services Provided

Historic Building Conservation, Home Additions, Home Remodeling, Home Restoration, New Home Construction, Project Management, Custom Homes

Areas Served

Avondale, Centreville, Chadds Ford, Chester Heights, Greenville, Hockessin, Kennett Square, Montchanin, New Castle, Newark, Pennsbury, Pike Creek, Rockland, Wilmington, Winterthur, Yorklyn, Rehoboth Beach, Lewes, Bethany, Fenwick Island, West Chester, Main Line, Maryland, Pennsylvania


Best of Houzz 2014 to 2020, 2018 Philadelphia 100, Big 50, The Best of Delaware, Construction Excellence Award, Home Builders Association of Delaware Regal Award , Quaker Hill Society - Restoration Award, Lewes Historical Society - Historical Preservation Award for New Construction

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Business Details

Business Name

Dewson Construction Company

Phone Number

(302) 427-2250


9 Jefferson Avenue
Wilmington, DE 19805

Typical Job Cost

$25,000 - 5 million

We do any size job, big or small, with the same attention detail, signature quality and fantastic customer experience.


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