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

Carson's Zoning Ordinance caps building footprint in the RM Zone: the ground area enclosed by a building's exterior walls or supporting columns cannot exceed 40 percent of the net lot area. That cap rises to 70 percent of net lot area when the project includes a parking structure or subterranean parking, an incentive to move parking underground or into a structure instead of a surface lot. The limit sits in the Site Development Standards that apply across Carson's residential zones (RA, RS and RM), enforced by the Community Development Department at site-plan and building-permit review. Carson's single-family RA and RS zones instead rely on minimum lot area, width and yard requirements rather than a stated coverage percentage.