Santa Cruz County, CA Solar Energy: Expedited Solar Permitting (2026)

5. A system qualifies as 'small' if it is no larger than 10 kilowatts AC for photovoltaic systems or 30 kilowatts thermal for solar water heating, conforms to applicable state fire, structural, and electrical codes plus Civil Code § 714(c)(3), is installed on a single-family or duplex dwelling, does not exceed the zone district's maximum height, and sits on a permitted structure. Before applying, the applicant must verify through standard engineering evaluation that the roof structure can carry the system's wind, seismic, dead, and live loads, and through standard electrical inspection that the existing panel, subpanel, and wiring can carry the new photovoltaic loads.

An application meeting every checklist item is deemed complete; the Building Official must issue a written correction notice detailing any deficiencies rather than reject it outright. Once complete, the Building Official administratively approves the application and issues the permit, subject to only one inspection, though a failed inspection triggers a follow-up inspection with additional fees. If the Building Official finds, based on substantial evidence, that the system could have a specific, adverse impact on public health and safety, the county can instead require an administrative use permit, pulling the project out of the streamlined track.