5 county-level rules, plus city-specific rules for 8 cities in San Bernardino County, California.
Verified from official government sources
San Bernardino County regulates Accessory Dwelling Units and Junior Accessory Dwelling Units under the Development Code Title 8, Chapter 84.01 (Accessory Structures and Uses), specifically §84.01.060. ADUs are allowed in any land use zoning district on any site with a proposed or existing single-family dwelling; one detached ADU plus one JADU (max 500 sq ft) is allowed per single-family lot, and up to 25% of existing units may be added as ADUs on multifamily properties.
Sheds and accessory structures up to 120 sq ft do not require a building permit under Development Code §84.01.050. Structures over 120 sq ft require a Residential Accessory permit. All structures must comply with setback requirements and exist in conjunction with a primary dwelling.
Garage-to-ADU conversions are permitted by right in San Bernardino County under CA Gov Code 65852.2. Replacement parking cannot be required. A building permit is required for habitable conversion.
San Bernardino County permits carports under Development Code Ch. 83.02. A building permit is required for permanent carports. Typical setbacks are 5 feet side and rear with a 15-foot max height.
San Bernardino County permits tiny homes on wheels as recreational vehicles under park rules, while permanent tiny houses on foundations must meet full California Residential Code and ADU standards.
8 cities in San Bernardino County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
5 verified rules • ADU Rules, Carport Rules
9 verified rules • ADU Impact Fees, ADU Owner Occupancy
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
5 verified rules • ADU Rules, Carport Rules
9 verified rules • ADU Impact Fees, ADU Owner Occupancy
9 verified rules • ADU Impact Fees, ADU Owner Occupancy
9 verified rules • ADU Impact Fees, ADU Owner Occupancy
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