Accessory Structures in Sacramento County, CA (2026)

5 county-level rules, plus city-specific rules for 14 cities in Sacramento County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Sacramento County. If you live within an incorporated city, that city's own rules apply — see the city list below.

ADU Rules

Sacramento County permits ADUs and JADUs on all residential lots per Government Code 65852.2. Detached ADUs up to 1,200 sq ft, 4 ft setbacks, and streamlined 60-day ministerial review are standard.

Accessory Structures: Adu Rules

Few Restrictions

Full ordinance details →Official source ↗

Shed Rules

Sheds and detached accessory buildings 120 sq ft or less without utilities are permit-exempt in unincorporated Sacramento County. Larger structures require a building permit and must meet setbacks.

Accessory Structures: Shed Rules

Few Restrictions

Full ordinance details →Official source ↗

Garage Conversions

Garage conversions to living space or ADUs are permitted in unincorporated Sacramento County. State ADU law (Gov Code 65852.2) waives replacement parking requirements when converting a garage to an ADU.

Accessory Structures: Garage Conversions

Few Restrictions

Full ordinance details →Official source ↗

Carport Rules

Carports in unincorporated Sacramento County are treated as accessory structures requiring a building permit. Setbacks, height, and coverage limits apply, and carports in front yards are generally restricted to driveway areas.

Accessory Structures: Carport Rules

Some Restrictions

Full ordinance details →Official source ↗

Tiny Homes

Tiny homes on a permanent foundation can qualify as ADUs in unincorporated Sacramento County. Tiny homes on wheels (THOWs) are regulated as recreational vehicles and generally cannot be used as permanent dwellings on residential lots.