San Diego County requires a Short-Term Residential Occupancy (STRO) permit for vacation rentals in unincorporated areas under Zoning Ordinance Section 6900 et seq. Both hosted and un-hosted rentals need permits. Operators must obtain a TOT certificate and maintain good neighbor policies.
San Diego County adopted a comprehensive Short-Term Residential Occupancy ordinance regulating vacation rentals in unincorporated communities from Fallbrook to Julian to Borrego Springs. Operators must apply for an STRO permit through County Planning & Development Services. Requirements include proof of ownership, a site plan showing parking, a Good Neighbor Policy posted at the property, a 24-hour local contact person, and compliance with fire and building codes. Properties in the Coastal Zone may face additional California Coastal Commission review. The county distinguishes between hosted stays (owner present) and un-hosted (whole-home) rentals, with different requirements for each. Annual renewal is required. Properties with code enforcement violations may have permits revoked.
Operating without a permit: misdemeanor, fine up to $1,000/day. Administrative penalties and permit revocation for repeated violations of permit conditions.
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