Riverside County, CA Solar Energy: Panel Permits (2026)

Riverside County processes residential solar permits under a streamlined checklist consistent with the California Governor's Office of Planning and Research Solar Permitting Guidebook. A single combination permit covers structural attachment, electrical tie-in, and roof load review for systems up to 10 kW AC. Typical submittal includes a site plan, a one-line electrical diagram, panel and inverter cut sheets, and a structural letter when the roof is older than 15 years or trusses are engineered. Fees are capped by AB 2188 at a reasonable cost (generally 450 dollars or less for residential). Ground-mount arrays over 120 square feet or within required yard setbacks require a plot plan review, and systems in High and Very High Fire Hazard Severity Zones must follow Title 24 access pathway and setback rules (generally 36 inches at the ridge and pathways to hips and valleys). Inspections include a rough electrical and a final with the utility (Southern California Edison or Imperial Irrigation District) before permission-to-operate is issued. Projects in the Mount Palomar Light Pollution Zone must use shielded, low-profile system components when exterior lighting is added. Historic properties and HOA-governed parcels still require permits but HOA approval cannot be a county permit condition.