Lake County, CA Accessory Structures: Shed Rules (2026)

Lake County's Community Development Department treats accessory structures as detached, incidental buildings subordinate to the main use on a parcel. The County's threshold is clear: a structure that exceeds 12 feet in height or is larger than 120 square feet requires a Building Permit, while a structure under 12 feet AND under 120 square feet requires only a Zoning Clearance. Residential and commercial accessory structures are regulated differently from agricultural structures, which are considered part of the primary farming activity and follow a separate agricultural-exempt process. Setback and height limits for accessory structures are specified in Article 42 (Development Standards Exceptions) of the Lake County Zoning Ordinance, and detached accessory structures generally must meet the yard requirements of the base zoning district. Garages and carports are subject to separate setback exceptions distinct from other detached accessory structures. All structures must also comply with the General Performance Standards of Article 41 — for example, exterior lighting on an accessory building must be hooded, shielded, or opaque. Property owners should confirm the base-district setbacks for their specific zone and whether their parcel lies in a combining district (such as Scenic 'SC' or a Floodway district) that imposes additional standards.