All of Trinity County is unincorporated, so the County of Trinity sets fence rules. The County Building Code (Sec. 15.04.140, as amended by Ordinance 1373) lets fences reach up to 7 feet without a building permit, provided parcel-specific zoning allows it. Individual zoning districts can impose lower caps, such as 6 feet in the R-2 district.
Trinity County has no incorporated cities, so the County's zoning ordinance (Title 17) and building code (Title 15) govern every parcel. There is no single county-wide fence height number that applies everywhere; the practical ceiling comes from two layers. First, the building code: Trinity County Code Section 15.04.140, amended by Ordinance No. 1373 (adopted June 3, 2025), exempts 'Fences not over 7 feet high unless parcel specific zoning does not allow' from needing a building permit, and adds that fences 'shall still meet all zoning requirements as well as any requirements of the Department of Transportation.' Second, the zoning layer can set a lower limit for a given district. For example, the R-2 Duplex Residential district (Sec. 17.17.130(F)) states that fences and walls 'shall not exceed six feet in height,' and only three feet in a required front yard on reversed frontage. Because heights vary by zone and by where the fence sits on the lot (front yard versus rear, near a road, or on a corner), owners should confirm the cap for their specific zoning district with the Trinity County Planning Division before building a tall or solid fence.
Fences that exceed the permit-exempt height (over 7 feet) without a building permit, or that violate a district's zoning height cap, are enforced by the Trinity County Building and Planning Divisions. Typical remedies include a notice to comply, stop-work orders, after-the-fact permit and investigation fees, and abatement of the noncompliant fence. Fences in a road right-of-way or that block sight distance can also draw enforcement from the Department of Transportation.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Trinity County has no ordinance banning backyard composting; home composting of yard and food scraps is allowed. California's SB 1383 organic-waste recycling...
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Trinity County has no ordinance prohibiting or specially regulating artificial turf. Synthetic lawns are allowed on residential property, subject only to gen...
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Trinity County does not mandate native-plant landscaping for ordinary homes. However, the county cannabis-cultivation rules (Code Ch. 17.43G) require biologi...
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Trinity County has no ordinance restricting rooftop rainwater harvesting. Capturing rainwater in barrels and cisterns for outdoor, non-potable use is allowed...
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Trinity County has no countywide lawn-watering day/time schedule. Outdoor water use is shaped by the county Water Quality Control Ordinance (Code Ch. 8.60), ...
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Trinity County's Vegetation Management Ordinance (Code Ch. 8.68, Ord. No. 1300) declares excessive dry grass, brush, dead trees and other flammable vegetatio...
See how Trinity County's height limits rules stack up against other locations.
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