Glenn County, CA Building Setbacks & Zoning: Structure Height Limits (2026)
Key Facts
- R-1 residential structure cap
- 30 feet
- R-1 accessory structure cap
- 15 feet
- FA/RZ residential zone cap
- 35 feet
- FA/RZ agricultural building cap
- 50 feet (barns exempt)
- Lot coverage limit
- 40%, 30% on steep slopes
- Fence/wall limit
- 6 feet (3 feet in front yard)
- Relief path
- variance under § 15.27.010
Summary
In the R-1 Single-Family Residential Zone across unincorporated Glenn County, Glenn County Code § 15.37.080 caps any residential structure at thirty feet and any accessory structure, like a shed or detached garage, at fifteen feet. The FA and RZ agricultural zones allow taller structures for barns and similar farm buildings.
The maximum building height in the R-1 zone shall be: Thirty feet for any residential structures; Fifteen feet for any accessory structures.
Full Breakdown
080: no residential structure can rise above thirty feet, and no accessory structure, like a detached garage, shed or workshop, can exceed fifteen feet. 020 to unincorporated areas with sanitary sewer and/or piped water service, or land within an established utility or district service area, so most R-1 lots sit near the county's unincorporated communities served by county utilities. 100. Height limits are not uniform countywide: the county's agricultural and recreation zones allow taller structures to accommodate farm operations. 060 sets a thirty-five-foot cap on residential structures but fifty feet for agricultural buildings, and exempts water tanks, silos, granaries, barns, pole buildings, electronic towers and antennas from the fifty-foot cap entirely.
060. A property owner planning new construction in unincorporated Glenn County should confirm the zoning designation on their parcel with the Glenn County Planning Department before assuming the R-1 thirty-foot cap applies.
Violations & Fines
Constructing a residential structure above the thirty-foot cap, or an accessory structure above fifteen feet, without first obtaining a variance under § 15.27.010 is a Title 15 violation. Glenn County Code § 1.12.010 makes a first offense an infraction, escalating to a misdemeanor for a third violation of the same requirement within 12 months, punishable under § 1.13.010 by up to $5,000 in fines, up to one year in county jail, or both.
Frequently Asked Questions
How tall can I build my house in unincorporated Glenn County?
Are height limits different on agricultural land in Glenn County?
What if I want to build higher than the R-1 zone allows?
Does the height limit apply to a detached garage or workshop too?
Sources & Official References
Other rules in Glenn County
California rules heatmap·Compare Glenn County to another location·View the California building setbacks & zoning overview
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