Design-build services · Fairfax County, Virginia
Home additions in Fairfax County, VA
Room additions, upper-level additions and expanded living spaces in Fairfax County, with coordinated design, permits and construction.
Make room for the way you live
Mosaic plans room additions, kitchen expansions, primary suites and second-story space around the existing home. Start with the rooms you need, the connection to your current layout and how you want the house to function day to day.
Start with the Fairfax County property
Compare an expanded footprint with an upper-level addition, especially when preserving the yard is a priority. Fairfax setbacks depend on the zoning district and applicable development conditions. A survey or plat is the starting point for comparing an addition, garage or deck footprint.
Coordinate structure, plans and construction
Fairfax lists additions and alterations separately from new residential buildings, including detached garages. Choose the permit path from the proposed work rather than the name you give the room. We coordinate architectural and structural drawings, applicable system plans, permit submissions and construction for the agreed scope. For an over-garage addition, the existing foundation and framing need their own evaluation.
Prepare for your design consultation
Bring a property plat, photographs, any existing plans and your must-have rooms. Discuss access, utilities, finish preferences and how construction could affect daily routines. Pricing and schedules are developed for the property and scope, not promised from a generic square-foot figure.
Official local planning resources.
Requirements depend on the parcel and project scope and may change. Confirm current requirements with the reviewing authority. These references are not permit determinations.


