Grapevine, TX Building Setbacks & Zoning: Lot Coverage Limits (2026)

Grapevine's Zoning Ordinance establishes maximum lot coverage percentages that limit how much of a lot can be occupied by buildings. In the R-20 Single-Family District, maximum lot coverage is typically 40 percent. R-12.5 and R-7.5 districts allow up to 40 to 50 percent coverage. Higher-density zones such as R-TH (Townhouse) and R-MF (Multi-Family) allow greater coverage but require minimum open space percentages. Lot coverage is calculated using the footprint of principal and accessory structures, measured to the outside face of exterior walls and including covered porches, carports, and permanent overhangs greater than 24 inches. Driveways, uncovered patios, and swimming pools are not counted toward lot coverage but may be restricted by impervious surface standards in the Grapevine Lake watershed and floodplain overlay zones. The Historic Township Overlay can impose additional limits to protect the pattern of historic lots. Accessory buildings such as detached garages and pool houses count toward coverage and are also subject to maximum accessory square footage rules. Homeowners proposing additions should verify coverage with a site plan prior to permit application to avoid redesign.