San Mateo's Solar Energy: The Rules That Matter

Every city handles solar energy a little differently. In San Mateo, California, there are 2 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Panel Permits

San Mateo provides streamlined solar permitting as required by AB 2188 and SB 1222. Residential rooftop systems meeting standard criteria receive ministerial (non-discretionary) approval. The city processes solar permits within the required 3-business-day timeframe.

Key details: Process: Streamlined — ministerial. Timeline: 3 business days per state law. State Laws: AB 2188 and SB 1222. Inspection: Required after installation. Contact: Building Division — 650-522-7200.

Installing without a permit is a building code violation. The process is designed to be fast and affordable per state law.

San Mateo is more permissive than most cities when it comes to panel permits. That said, there are still limits.

HOA Restrictions

California's Solar Rights Act (Civil Code 714) prohibits HOAs from effectively restricting solar panel installations. HOA rules cannot increase installation cost by more than $1,000 or reduce efficiency by more than 10%. San Mateo HOAs must comply.

Key details: State Law: CA Civil Code §714. Cost Impact Limit: Cannot increase by >$1,000. Efficiency Impact: Cannot decrease by >10%. South-Facing Roof: Cannot deny for aesthetics. Remedies: Damages + attorney's fees.

HOA restrictions violating the Solar Rights Act are void. Homeowners may pursue legal action. HOAs liable for damages and attorney's fees.

The rules around hoa restrictions in San Mateo lean permissive, but that does not mean anything goes.

The Bottom Line

Compared to many U.S. cities, San Mateo gives residents more room on solar energy. 2 of the 2 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

Keep in mind that San Mateo can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.