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Twain Harte, CA Environmental Rules: Defensible Space (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Zone 1
0-30 ft lean clean green
Zone 2
30-100 ft reduced fuels
Authority
Cal Fire SRA inspectors
Annual inspection
Yes, drive-by audits

Summary

Twain Harte sits in a State Responsibility Area, so California Public Resources Code 4291 requires homeowners to maintain 100 feet of defensible space around every structure. Cal Fire inspectors enforce annually.

(a) A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall at all times do all of the following: (1) (A) Maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line, except as provided in subparagraph (B). The amount of fuel modification necessary shall consider the flammability of the structure as affected by building material, building standards, location, and type of vegetation. Fuels shall be maintained and spaced in a condition so that a wildfire would be unlikely to ignite the structure.

Source: Tuolumne County Code (governs Twain Harte CDP)View official code

Full Breakdown

California Public Resources Code 4291 mandates two zones around homes in SRA wildfire territory, which covers nearly all of Twain Harte. Zone 1 (0-30 feet) requires lean, clean, green vegetation with no dead material, while Zone 2 (30-100 feet) needs reduced fuels with horizontal and vertical spacing between shrubs and trees. After Rim Fire 2013 and Donnell Fire 2018, Cal Fire stepped up Tuolumne County inspections. Tuolumne County enforces locally through Title 5 environmental nuisance abatement when owners ignore Cal Fire warnings.

Violations & Fines

Cal Fire issues warning notices first; uncorrected violations can lead to abatement liens and fines escalating with repeat noncompliance.

Frequently Asked Questions

Does this apply to renters?
The duty falls on the property owner, but renters often bear yard responsibility under the lease. Coordinate with your landlord before fire season.
Can I keep firewood near the house?
No. Stack firewood at least 30 feet from any structure during fire season, and ideally cover it to deny embers a fuel source.

Sources & Official References

Other rules in Twain Harte

Parking Rules: Overnight ParkingSome RestrictionsSwimming Pools & Spas: Fencing & Safety RequirementsSome RestrictionsAnimal Ordinances: Exotic PetsSome RestrictionsFire Regulations: Wildfire ZonesSignificant RestrictionsFire Regulations: Brush ClearanceSome RestrictionsEmployment Preemption: Paid Leave PreemptionSome Restrictions

All Twain Harte rules

California rules heatmap·Compare Twain Harte to another location·View the California environmental rules overview

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