21 Century Home Services | Serving Virginia, Maryland, and the District Of Columbia

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Design Build

Design Build Construction in Virginia, Maryland and Washington DC​

Design Build provides homeowners with a single point of contact for both the design and construction phases of a project. One party is responsible for all aspects, from estimates, assessments and pre-construction to architecture, schematics, engineering, subcontracting, construction and post-construction. This entity, manages all contracts with subcontractors, equipment vendors and materials providers.

Our design build experts offer full residential service to the Washington DC Metro area, as well as Arlington, Alexandria, Fairfax, Herndon, Manassas, Ashburn, Sterling, Springfield, and Falls Church in Virginia; Gaithersburg,  Rockville, and Bethesda in Maryland.

Design Build in Virginia, Maryland and Washington DC​

  • Home Additions
  • Garage Additions
  • Room Additions
  • Sunroom Additions
  • 2nd Story Additions

We proudly serve the Washington DC Metro area, including Arlington, Alexandria, Fairfax, Herndon, Manassas, Ashburn, Sterling, Springfield, and Falls Church in Virginia; Gaithersburg,  Rockville, and Bethesda in Maryland.

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