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

Amador County sets lot coverage and minimum-parcel standards by district in Title 19, Chapter 19.24. In the R1-A single-family residential-agricultural district, Section 19.24.045 provides that no more than 35 percent of the lot may be covered by permanent structures. The same district sets minimum building-site dimensions - a minimum depth of 90 feet and a minimum width of 60 feet at the front-yard setback building line - and ties minimum parcel size to the General Plan classification in which the R1-A district lies, ranging from roughly 6,000 square feet (urban or suburban parcels with public water) up to 40 acres in agricultural classifications. Because 'permanent structures' counts toward coverage, accessory buildings, the dwelling, and similar structures all factor in; fences under six feet are excluded from the structure definition (Sec. 19.08.590) and generally do not count. Other zoning districts have their own coverage and lot-size standards, and the unclassified district often defers to use-permit conditions, so the applicable figure should be confirmed for the specific zone. The 35 percent figure cited here is the R1-A standard.