San Diego County, CA Solar Energy: Expedited Solar Permitting (2026)
Key Facts
- Size cap
- 38.4 kW AC / 30 kW thermal
- Eligible buildings
- Single- or two-family dwellings
- Process
- Online automated permitting platform
- Standard
- CA Solar Permitting Guidebook conformance
Summary
Unincorporated San Diego County must fast-track permits for small residential rooftop solar and storage systems up to 38.4 kW AC.
The building official shall follow a streamlined permitting process for a small residential rooftop solar energy and energy storage systems meeting all of the following requirements: (a) No larger than 38.4 kilowatts alternate current nameplate rating or 30 kilowatts thermal. (b) Installed on a single- or two-family dwelling.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-141: Administrative: Current through Ord. No. 11007 (N.S.), effective 7-10-26 | Regulatory: Current through Ord. No. 11008 (N.S.), effective 7-24-26).
Full Breakdown
The county's building official runs a streamlined permitting process for small residential rooftop solar and energy storage systems on single- or two-family homes, capped at 38.4 kilowatts AC nameplate rating (or 30 kilowatts thermal). Qualifying projects that meet the county's published checklist and conform to the current California Solar Permitting Guidebook can use San Diego County's online automated permitting platform, with consolidated inspections coordinated through the County Fire Protection District.
Violations & Fines
Not meeting the size cap, dwelling type, or checklist requirements routes the project out of the streamlined track into standard plan review.
Frequently Asked Questions
Does the fast-track apply inside the City of San Diego?
What size system qualifies for streamlined review?
Sources & Official References
Other rules in San Diego County
California rules heatmap·Compare San Diego County to another location·View the California solar energy overview
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