Portsmouth, VA Building Setbacks & Zoning: Lot Coverage Limits (2026)

Sec. 2-218(B)(1) defines building coverage as the portion of a lot covered by a building's footprint, along with any attached porches, accessory structures, decks, and balconies; it specifically excludes driveways, streets, sidewalks, outdoor storage areas, and other impervious surfacing, so Portsmouth's zoning code does not set a separate citywide impervious-surface cap outside this building-footprint measure. 2-218(1) in Sec. 2-218(G) then sets the maximum percentage by district: 45 percent in both the Neighborhood Residential (NR) and General Residential (GR) districts, 55 percent in Urban Residential (UR), and 65 percent in Urban Residential-Mixed (UR-M), tracking the smaller minimum lot sizes and higher densities permitted as the district numbers rise.

Building coverage is calculated against the full lot size as defined in Sec. 2-218(A)(1), excluding public rights-of-way and land below the mean high-water mark. In the historic districts, Sec. 2-206(E)(1) applies a different limit: a flat 70 percent maximum building coverage across Truxtun, Cradock, Port Norfolk, Olde Towne, and Park View, regardless of the base zoning district a historic lot would otherwise carry. A property owner proposing a building footprint, porch, deck, or accessory structure that would push coverage over the applicable percentage must either redesign the project or seek relief from the Board of Zoning Appeals. Compliance is checked at the Zoning Permit (Sec. 2-530) or Site Plan (Sec. 2-540) review stage, before construction begins.