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

Corona Municipal Code Sec. 2 Single-Family Residential Zone: single-story buildings and structures may cover up to 45% of the total lot area, while any lot carrying a two-story building drops to a 35% coverage ceiling. The rule counts the footprint of every building and structure on the lot, meaning the house, garage and any qualifying accessory structures are added together against the percentage cap, not evaluated individually. The section was amended by Ordinance 2427 in 1999 and traces back to Ordinance 1474 from 1977, showing the two-tier single-story/two-story structure has been a fixture of the zone for decades.

18: the 20-foot front, 10-foot side (or less with alley access) and 10-foot rear yard minimums in Sec. 100 already remove a fixed band around the lot perimeter from the buildable area, and the 25-foot/30-foot height cap in Sec. 090 further limits how much volume can be packed onto the remaining footprint. 06, where Sec. 120 caps coverage at a flat 30% regardless of story count, illustrating how Corona ties its coverage allowance to the intensity of each zoning district rather than applying one citywide number.

A homeowner proposing an addition that would push a two-story lot past 35% coverage, or a single-story lot past 45%, needs to either redesign the footprint or apply for relief through the Community Development Department before pulling a building permit.