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Los Banos, CA Solar Energy: Expedited Solar Permitting (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

System size cap
10 kW AC or 30 kW thermal
Review timeline
Same day, or 1-3 business days
Eligible buildings
Single- or duplex-family dwellings
Inspections
One consolidated inspection required
Governing ordinance
Ord. 1133, eff. October 2, 2015

Summary

Los Banos runs a same-day, nondiscretionary permit process for small residential rooftop solar systems under Municipal Code Title 8, Chapter 6. Systems up to 10 kW AC (or 30 kW thermal) on a single- or duplex-family home qualify, and the Building Department must approve or deny an over-the-counter application the same day it is filed.

The Chief Building Official shall implement an administrative, nondiscretionary review process to expedite approval of small residential rooftop solar energy systems applications. The Building Department shall complete the building permit approval or denial process, the issuance of which is nondiscretionary, on the same day for over-the-counter applications or between one and three business days where such over-the-counter approval is not authorized or feasible.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4356507; v3 updated 2025-03-05).

Full Breakdown

Chapter 6 of Title 8, adopted by Ordinance No. 5). A "small residential rooftop solar energy system" is capped at 10 kilowatts AC nameplate rating or 30 kilowatts thermal, must be installed on a single- or duplex-family dwelling, must meet applicable state and City fire, structural, electrical and other building codes, and cannot exceed the City's maximum legal building height. The Building Department must accept electronic submittal of applications by e-mail, internet or fax, and must accept electronic signatures in lieu of a wet signature.

06, the Chief Building Official runs an administrative, nondiscretionary review limited to whether the application meets local, state and federal health and safety requirements; approval or denial is issued the same day for over-the-counter applications, or within one to three business days when over-the-counter approval is not feasible. Only one inspection is required, done in a timely manner with consolidated inspections where possible, and a failed inspection triggers one follow-up inspection. The Chief Building Official may require an administrative use permit only on substantial evidence that the system would have a "specific, adverse impact" on public health or safety, defined as a significant, quantifiable, direct and unavoidable impact based on written standards in effect when the application was deemed complete; any such denial must include written findings on why no feasible mitigation exists, and the decision can be appealed to the City Planning Commission under the appeal procedure in Part 6, Article 23, Chapter 3 of Title 9.

"Reasonable restrictions" are capped in cost: for water heater or solar pool heating systems, an added cost over 10% of system cost, but never more than $1,000, or an efficiency loss over 10%; for photovoltaic systems, an added cost over $1,000 or an efficiency loss over 10%. 55 and 66015 and Health and Safety Code Section 17951. Systems installed before the ordinance took effect are grandfathered unless physically modified in a way that requires new permitting; routine maintenance and like-kind replacement need no permit.

Violations & Fines

There is no separate solar-specific penalty; noncompliant installations are handled as unpermitted building work. An application deemed incomplete gets a written correction notice listing every deficiency and any documentation still needed for expedited issuance, and the applicant must resubmit before the permit can proceed.

Frequently Asked Questions

How fast can I get a solar permit approved in Los Banos?
The Building Department must approve or deny an eligible application the same day for over-the-counter submissions, or within one to three business days when over-the-counter approval isn't feasible, under Section 8-6.06 of the Municipal Code.
Can Los Banos deny my rooftop solar permit?
Only if the Chief Building Official finds substantial evidence of a specific, adverse impact on public health or safety with no feasible way to mitigate it, and then only through an administrative use permit process with written findings, appealable to the Planning Commission.
Does Los Banos accept electronic solar permit applications?
Yes. Section 8-6.05 requires the City to make electronic submittal by email, internet or fax available to all applicants, and to accept electronic signatures in place of a wet signature on all forms and documents.

Sources & Official References

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