Sierra County, CA Property Maintenance: Weeds & Overgrown Grass (2026)

Research of the Sierra County Code did not find a specific 'weeds and grass' chapter setting a numeric height limit for the unincorporated county. Instead, overgrown, dead, or dangerous vegetation can be addressed as a public nuisance under Sierra County Code Chapter 8.20 (Public Nuisances - Health and Safety), which provides the investigation, hearing, abatement, and cost-lien process (SCC 8.20.030 through 8.20.130). Because nearly all of unincorporated Sierra County lies within a State Responsibility Area at high elevation, the controlling vegetation-management requirement for most residents is California state law: Public Resources Code section 4291 requires 100 feet of defensible space around buildings (or to the property line), and these standards are administered by CAL FIRE rather than by a County grass-height rule. The Sierra County Code does include fire-related provisions (Title 8, Chapter 8.12 Fire Protection, and fire-safe building/road standards), but these focus on fire protection and defensible-space-style requirements rather than a lawn-height ordinance. Property owners with overgrown vegetation that creates a fire hazard should expect enforcement primarily through CAL FIRE defensible-space inspections and, where it rises to a nuisance, through Chapter 8.20.