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

The City of Upland limits how much of a residential lot may be covered by structures through Development Code Chapter 17.04, Section 17.04.030(A), and Table 17.04-2. Maximum lot coverage in the single-family RS zones increases as lot sizes get smaller: RS-20 and RS-15 are capped at 35%, RS-10 at 40%, RS-7.5 at 45%, RS-4 at 50%, and the RS-MH mobile-home subdivision zone at 60%. Lot coverage works together with the setback standards in Table 17.04-3 and the height limits to define the buildable envelope, ensuring open space, light, and air between homes. These are City of Upland zoning standards, not California Building Code provisions; the CBC governs structural and fire requirements but not the percentage of a lot that may be built upon. Accessory structures, patios, and certain projections may or may not count toward coverage depending on the City's definitions, so applicants should confirm exactly what counts as 'coverage' for their project. Because the percentage is tied to the specific zone, and because the multifamily RM zones rely more on density, setback, and open-space standards than a flat coverage percentage, verify the applicable figure for your parcel with the Planning Division at (909) 931-4130 before designing an addition or new structure.