Marin County, CA Solar Energy: Panel Permits (2026)
Key Facts
- Permit exemption
- Up to 2 ft over height limit
- Governing section
- Development Code § 22.06.050(H)
- Building permit
- Still required, Title 19
- San Geronimo exception
- Stream Conservation Area not exempt
Summary
Rooftop and ground-mounted solar energy systems in unincorporated Marin are exempt from a discretionary land use permit under Development Code Section 22.06.050(H), as long as they don't exceed the zoning district's height limit, or the building's roof height, by more than two feet. A Building Permit under Title 19 is still required before installation.
H.Solar Energy Systems. Solar energy systems that do not exceed the height limit of the governing zoning district for structures or the roof height of a building by more than two feet, whichever is less restrictive. Solar energy systems within a Stream Conservation Area within the San Geronimo Valley combining district are not exempt unless the exemption is required by State law.... J.Other permits may still be required. A permitted land use that is exempt from a land use permit or has been granted a land use permit may still be required to obtain Building Permits or other permits before the use is constructed or otherwise established and put into operation.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 2026 Update 1).
Full Breakdown
050 (Exemptions from Land Use Permit Requirements) of the Marin County Development Code lists solar energy systems among the improvements the County will approve without a discretionary land use permit. Subsection H exempts a solar installation so long as it does not exceed the height limit that otherwise applies to structures in the governing zoning district, or the roof height of the building it sits on, by more than two feet, whichever limit is less restrictive. The exemption does not apply automatically inside the Stream Conservation Area of the San Geronimo Valley combining district, where a solar system still needs the land use permit unless state law itself requires the exemption.
Subsection J of the same section makes clear that a land use permit exemption never substitutes for the other approvals a project needs: an installer must still obtain a Building Permit and any other construction permit required by Title 19 of the County Code before starting work, along with any state or federal approval that applies. In practice, homeowners in the RA, RR, RE, R1, and R2 residential districts can install roof-mounted panels without a discretionary hearing as long as the array stays within two feet of the roofline or the district's height cap, whichever governs, then pull the Building Permit that Marin's Building & Safety Division requires for the electrical and structural work.
Violations & Fines
Installing a ground-mounted or roof-mounted solar array that exceeds the district height limit, or the roof height, by more than two feet forfeits the Section 22.06.050(H) exemption and requires a discretionary land use permit before the County will sign off. Building without the required Building Permit under Title 19 is a separate violation the Building & Safety Division can cite and require the owner to correct, regardless of the array's height.
Frequently Asked Questions
Do I need a county land use permit to install rooftop solar in unincorporated Marin?
What if my solar system needs to be taller than that?
Is the exemption different in the San Geronimo Valley?
Sources & Official References
Other rules in Marin County
California rules heatmap·Compare Marin County to another location·View the California solar energy overview
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