5 county-level rules, plus city-specific rules for 2 cities in Tuolumne County, California.
Verified from official government sources
Tuolumne County adopted an ADU ordinance (Title 17, §17.52.200) per California Government Code §65852.2. ADUs up to 800 sq ft are allowed on single-family lots. Detached ADUs have a 16-foot height limit and 4-foot side/rear setbacks. Pre-approved ADU plans are available.
Sheds and accessory structures in unincorporated Tuolumne County are regulated by zoning provisions in Title 17 and building code requirements. Building permits are typically required for structures over 120 sq ft. Existing sheds can be converted to ADUs under state law.
Garage conversions to ADUs are permitted in Tuolumne County under California state law. Converted garages are exempt from development standards like setbacks and lot coverage, and the county cannot require replacement of lost parking spaces.
Tuolumne County requires building permits for carports as accessory structures. Title 17 zoning establishes setback requirements and building coverage limits (25% of parcel or 4,000 sq ft, whichever is less for agricultural zones).
Tuolumne County allows Accessory Dwelling Units (ADUs) under California Government Code §65852.2. Tiny homes on foundations may qualify as ADUs. Tiny homes on wheels (THOWs) are generally classified as RVs and subject to the 30-day occupancy limit for RV living.
2 cities in Tuolumne County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Tuolumne County — parking, noise, fences, fires, animals, pools, and more.
Tuolumne County Ordinance Hub →