Roseville, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)

030(A) of the Roseville Municipal Code sets a 'Lot Coverage (primary buildings)' row that varies sharply by zoning district. In the R1 (Single-Family Residential) zone, coverage is capped at 35 percent for a two-story home and 45 percent for a one-story home. The R2 (Two-Family Residential) zone allows 40 percent coverage, and the R3 (Multi-Family Housing) zone allows 50 percent. The RS (Small Lot Residential) zone, in both its attached-sidewalk and separated-sidewalk configurations, carries no fixed percentage limit; footnote 4 explains instead that rear and side yards may count toward the zone's required usable open space, provided the minimum dimension measured perpendicular to that yard is 10 feet, and that maximum coverage in RS is 'a function of lot size, required setbacks and usable open space,' with a reduced 500-square-foot usable open space minimum available where a front porch of at least six feet by 10 feet is provided.

The RMU (Residential Mixed Use) zone also carries no fixed cap, deferring to a development standard overlay district under footnote 7. 22, which caps detached accessory building area at 700 square feet per lot regardless of the primary structure's footprint.