Solano County, CA Building Setbacks & Zoning: Setback Rules (2026)

Solano County does not apply one uniform setback to all properties. Under Chapter 28 (Zoning Regulations), the minimum front, side, and rear yard distances depend on the property's zoning district, and the County's published guidance states that the zoning district specifies the minimum distances or setbacks from property lines for buildings, accessory structures, and fences, as well as maximum height restrictions. The numeric setbacks by district are listed in the Zoning Code's development-standards tables (for example, Table 28.31B and Table 28.32C are referenced for setbacks and height by district). Several specific rules supplement the base setbacks: on a corner lot adjacent to a key lot, the required street-side yard for any building within twenty-five feet of the side line of the key lot must equal the front yard required on the key lot; cornices, eaves, and similar architectural features may extend into a required yard up to two and one-half feet; and unenclosed porches or stairways may extend up to six feet into a required front or rear yard and three feet into a side yard. Accessory and agricultural buildings have their own placement rules. Because the exact figures depend on the zone, owners should look up their parcel in the County GIS Parcel Viewer and confirm the applicable table before building. Setbacks inside incorporated cities are governed by each city, not the County.