Stafford County, VA Environmental Rules: Flood Elevation Requirements (2026)

Section 11-14, Building construction projects, ties the building permit directly to flood-elevation math. Before a permit can be issued, the effect of a one-hundred-year storm on the proposed building has to be calculated by a professional engineer or land surveyor licensed in Virginia. That calculation then sets the flood elevation the building must clear: no permit issues for a structure with a proposed lowest floor less than one foot above the one-hundred-year flood elevation determined in that calculation. The same section requires erosion and sediment control devices to be installed before footings can be approved and kept in working order throughout construction, and it blocks a building permit until roads and subdivision streets serving the site have been graded and covered with base stone.

This freeboard requirement operates alongside the county's Flood Hazard Overlay District under the Zoning Ordinance and the residential lot grading plan requirements of Section 11-15, which require the plan to depict the 100-year flood elevation and finished floor elevations for single-family homes disturbing between 2,500 square feet and one acre. Taken together, a builder in a flood-prone part of the county cannot get past the building permit stage without the engineering documentation showing the freeboard has been met.