Sonoma County, CA Solar Energy: Expedited Solar Permitting (2026)
Key Facts
- Applies to
- Unincorporated county only
- System size cap
- 10 kW AC / 30 kW thermal
- Inspections required
- One, per Sec. 7D4-7(F)
- Zoning clearance
- Waived absent adverse impact
- Authority
- Gov. Code § 65850.5 (AB 2188)
Summary
Unincorporated Sonoma County waives zoning clearance for small rooftop solar and caps inspections at one under its Solar Rights Act streamlined review process.
Permits issues pursuant to this chapter shall not require clearance as to zoning considerations per Chapters 26 or 26C of this code unless specific adverse impacts are identified by the building official. Such decision, if made may be appealed pursuant to Sections 26-92-040 or 26C-331 of the Sonoma County Code.F.For a small residential rooftop solar energy system eligible for expedited review, only one (1) inspection shall be required, which shall be done in a timely manner. If a small residential rooftop solar energy system fails inspection, a subsequent inspection is authorized. (Ord. No. 6127, § II, 8-11-2015)
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64 Update 2).
Full Breakdown
Chapter 7D4 sets up expedited review for small residential rooftop solar systems (up to 10 kW AC / 30 kW thermal) in unincorporated Sonoma County. The building official must adopt a standard checklist based on the state Solar Permitting Guidebook; a complete application gets administrative approval with no discretionary hearing. Permits skip zoning clearance under Chapters 26/26C unless the building official finds a specific adverse impact, and only one inspection is required. This applies only outside the nine cities, each of which runs its own solar permitting process.
Violations & Fines
An incomplete application draws a written correction notice listing the missing items rather than a denial. The building official can withhold issuance only if there is an existing violation on record for the structure; appeals of an adverse-impact finding go through Sections 26-92-040 or 26C-331.
Frequently Asked Questions
Does my Sonoma County solar permit need a zoning review?
How many inspections will the county require?
Sources & Official References
Other rules in Sonoma County
California rules heatmap·Compare Sonoma County to another location·View the California solar energy overview
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