Ground-mount solar in California: permits, HOA rights and the rules to check first

How the permit is decided

Government Code section 65850.5 says a city or county must administratively approve applications to install solar energy systems through the issuance of a building permit or similar nondiscretionary permit. Review is limited to the building official’s check of whether the system meets health and safety requirements of local, state and federal law, and local requirements are limited to standards necessary to prevent a specific, adverse impact on public health or safety. Gov. Code 65850.5·checked Nov 9, 2026

If the building official finds, on substantial evidence, that the system could have a specific adverse impact on health or safety, the city or county may require a use permit. It may not deny that use permit unless it makes written findings, based on substantial evidence, of a specific adverse impact for which there is no feasible way to mitigate or avoid it. The building official’s decision can be appealed to the planning commission. Any conditions must be designed to mitigate the specific impact at the lowest cost possible.

The section’s streamlined-permit checklist requirement, in subdivision (g), is written for small residential rooftop systems. A ground mount is a structure on the lot, so ask your building department which checklist it applies and whether it asks for a site plan, a structural drawing for the footings, or an electrical single-line diagram.

Call before you dig

A roof system rarely needs an excavation. A ground mount usually does: footings, a trench for the conduit run to the electrical panel, and often a grounding rod. Section 65850.5 requires every solar permit application to include a reference to the requirement to notify the appropriate regional notification center of the intent to excavate before digging, including installing a grounding rod. A city or county is not liable for damages from a person’s failure to notify. Gov. Code 65850.5·checked Nov 9, 2026 Ask your contractor, in writing, who files the notice and when.

Setbacks, height and the lot

Zoning decides where a structure can stand. Setbacks from property lines, height limits, easements, septic fields and any fire-hazard overlay are local, and they differ from one city and county to the next, so this page gives no numbers. The planning or zoning counter can tell you the rules for an accessory structure on your parcel, and the answer decides whether the array fits where the sun is best. Do the shade check before you pay for drawings; our roof suitability guide explains how shade and direction affect output, and the same logic applies to a frame on the ground.

If you are in an HOA

Civil Code section 714 makes a covenant, restriction or governing-document provision that effectively prohibits or restricts the installation or use of a solar energy system void and unenforceable. It does not apply to reasonable restrictions: those that do not significantly increase the cost of the system or significantly decrease its efficiency, or that allow an alternative system of comparable cost and efficiency. For a photovoltaic system, “significantly” means more than $1,000 over the system cost as originally specified, or a loss of more than 10 percent of efficiency. Civ. Code 714·checked Nov 9, 2026

The definition of a solar energy system comes from Civil Code section 801.5, which includes solar racking, solar mounting and elevated solar support structures, “regardless of whether the feature is on the ground or on a building.” Civ. Code 801.5·checked Nov 9, 2026 That language is why a ground-mounted frame is inside the HOA statute and not a loophole.

Process matters too. An application for approval is treated like an architectural modification request and cannot be willfully avoided or delayed. A private association must approve or deny in writing, and if it does not deny in writing within 45 days of receipt, the application is deemed approved unless the delay came from a reasonable request for more information. A willful violation by an entity other than a public entity can carry actual damages and a civil penalty of up to $1,000, and the prevailing party in an enforcement action is awarded attorney’s fees. Whether a particular rule in your governing documents is “reasonable” is a legal question; an attorney should read your documents.

Ground, roof or carport: what the rules say about each

For the carport version, see our solar carport guide.

If you are building a new home

The California Energy Commission says the solar PV system required for a newly constructed single-family home does not have to be on the roof: it can be ground-mounted on the property or mounted atop a carport on the lot. CEC·checked Nov 9, 2026 The exceptions, the sizing rule and the battery option are in our guide to whether solar is required on new homes.

What the written quote should say

• The contractor’s license number, and the license class that covers the solar scope. CSLB lists C-46 solar and C-10 electrical among the classes authorized for solar work, and its advice is not to use a contractor who is not licensed to do solar work. CSLB·checked Nov 9, 2026 Check the number on the CSLB lookup.
• The footing or foundation type, and who engineers it.
• The length of the trench or conduit run from the array to the electrical panel, as its own line.
• Who files the excavation notice and who pulls the building permit.
• What happens to the quote if the setback rules or soil conditions change the layout.
• Equipment models and counts, the same as on any solar proposal.
• Warranty on the structure and on the work, not only on the panels.

Compare at least three itemized quotes. Our page on comparing solar quotes line by line shows how.