Marin County, CA Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- Primary structure limit
- 30 ft. (RA, RR, RE, R1, R2, RSP)
- Accessory structure limit
- 16 ft.
- Design Review bonus
- +10 ft. with 15-ft side setbacks
- Institutional building cap
- 75 ft. with added setbacks
- Height verification trigger
- Within 2 ft. of max height
Summary
Marin's Development Code caps most residential structures at 30 feet and detached accessory buildings at 16 feet under Table 2-5 in Section 22.10.040, covering the RA, RR, RE, R1, R2, and RSP districts. Section 22.20.060 sets how height is measured and lists the narrow exceptions that let a dwelling or an institutional building go higher.
A.General zoning district standards—Use of table. Proposed development and new land uses within the residential zoning districts established by Section 22.06.020 (Zoning Districts Established) shall be designed and constructed in conformity with the residential district development standards in Table 2-5 (Residential District Development Standards)... TABLE 2-5 RESIDENTIAL DISTRICT DEVELOPMENT STANDARDS ... RA 7,500 sq. ft. Not applicable 25 ft. 6 ft., 10 ft. on street side 20% of lot depth to 25 ft. max. 30 ft. 16 ft. 0.30 ... RR RE R1 R2 RSP Not applicable See Zoning Map Not applicable 30 ft. 16 ft. Not applicable
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
32). 42; a detached accessory structure stays capped at 16 feet unless it sits at least 40 feet from every property line, in which case it may reach the primary-structure limit; and floor area built beneath a qualifying parking structure can push a building to 30 feet. Institutional buildings, such as churches, hospitals, and schools, may rise to 75 feet in districts with a lower limit if front, side, and rear setbacks grow one foot for every foot of extra height and the Director finds no significant glare, shadow, or privacy impact.
Chimneys, spires, flagpoles, and water tanks may exceed the district limit up to 150 feet with Design Review approval, provided the structure covers no more than 15 percent of the lot and its base doesn't exceed 1,600 square feet. 54.
Violations & Fines
A structure built above its district's height limit without a qualifying exception or a Variance is unlawful under Section 22.122.030 and can be hit with a Stop Work Order; violating that order is a misdemeanor. The Development Code also requires a stamped Roof Elevation Certification from a licensed surveyor whenever a building's height comes within two feet of the maximum allowed, under Section 22.20.040(D)(2), so oversized construction is caught before final sign-off. Uncorrected violations can draw nuisance-abatement penalties of up to $2,500 per day and a hold on future permits.
Frequently Asked Questions
What's the standard height limit for a house in unincorporated Marin?
Can I build higher than 30 feet without a Variance?
How is building height measured?
What happens if a house is built too tall?
Sources & Official References
Other rules in Marin County
California rules heatmap·Compare Marin County to another location·View the California building setbacks & zoning overview
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