Accessory Structures in Hesperia, CA (2026)
9 verified accessory structures rules for Hesperia, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Hesperia permits one ADU plus one JADU per single-family lot under HMC 16.12.360 (Article 16.16 for JADUs), with detached ADUs up to 1,200 sq ft, JADUs up to 500 sq ft, and 4-foot side/rear setbacks - implementing California Gov. Code 66314 et seq.
ADU Standards Under Hesperia Municipal Code Section 16.12.360
Few RestrictionsADU Permits
Hesperia's Development Services Department issues ADU permits ministerially under HMC 16.12.360. California Gov. Code 66317 mandates approval or denial of a complete ADU application within 60 days (the Hesperia ordinance still references the older 120-day window).
ADU Building Permit Process and 60-Day Ministerial Review
Few RestrictionsADU Impact Fees
California Gov. Code 66315 prohibits Hesperia from imposing impact fees on ADUs under 750 sq ft. Larger ADUs may only be charged fees proportional to the primary dwelling's square footage. School fees and Mojave Water Agency capacity fees may still apply.
ADU Impact Fee Exemption for Units Under 750 Sq Ft
Few RestrictionsADU Owner Occupancy
Per California Gov. Code 66314(a)(7) (made permanent by SB 477), standard ADUs in Hesperia carry no owner-occupancy requirement. JADUs under HMC Article 16.16 and Cal. Gov. Code 66333 still require the owner to live in either the main dwelling or the JADU.
ADU Owner Occupancy: Standard ADUs Exempt, JADUs Required
Few RestrictionsADU Rental Restrictions
California Gov. Code 66314(a)(6) prohibits Hesperia ADUs and JADUs from being rented for terms shorter than 30 days, effectively banning Airbnb-style nightly stays of accessory units citywide.
ADU Short-Term Rental Prohibition (30-Day Minimum)
Some RestrictionsShed Rules
Hesperia Municipal Code §16.20.390 caps total enclosed accessory buildings (sheds, workshops) at 1,000 sq ft plus 7.5% of net lot area in residential zones. Sheds count as 'accessory buildings' under §16.08.005 when at least 50% enclosed. Building permits are required for sheds over 120 sq ft per the California Building Code.
Shed Rules in Hesperia, CA
Some RestrictionsGarage Conversions
Hesperia Municipal Code §16.12.360(E)(9) requires no setback for an existing garage converted to an ADU, and §16.12.360(E)(10) waives off-street parking replacement when the garage is demolished or converted in conjunction with an ADU. This implements California state ADU law (Gov. Code §65852.2), which preempts local barriers to garage-to-ADU conversions.
Garage Conversion Rules in Hesperia, CA
Few RestrictionsCarport Rules
Carports in Hesperia are classified as 'accessory structures' under §16.08.007 because they are 50% or more open to the elements. They count against the §16.20.400 cap of 15% of net lot area for aggregate accessory structures and cannot exceed 16 feet in height under §16.20.415. Demolition of a carport in conjunction with an ADU does not require parking replacement (§16.12.360(E)(10)).
Carport Rules in Hesperia, CA
Some RestrictionsTiny Homes
Hesperia treats permanently sited tiny homes as Accessory Dwelling Units under §16.12.360, allowing detached ADUs up to 1,200 sq ft (minimum 150 sq ft) on lots with an existing single-family residence. Detached ADUs are capped at 16 ft in height with 4-foot side/rear setbacks. Manufactured homes under 10 years old qualify. RVs explicitly do not qualify as ADUs under §16.12.360(E)(2).
Tiny Home Rules in Hesperia, CA
Some RestrictionsLooking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Hesperia city rules.
Accessory Structures in San Bernardino County →