In Altadena's Very High Fire Hazard Severity Zones, grass and weeds must be kept under 3 inches under LA County Fire Code Title 32 defensible-space rules.
LA County Fire's Defensible Space program (Title 32 + California PRC 4291) requires year-round vegetation management in VHFHSZ. Grass must be cut to no more than 3 inches in height within 200 feet of any structure. Outside the VHFHSZ, there is no specific grass-height cap — but the Title 11 public-nuisance provisions allow citation for overgrown vegetation that harbors vermin or creates a fire hazard. The annual Brush Clearance notice is mailed each spring; non-compliance triggers contractor clearance billed via property tax.
Forced abatement plus administrative penalty on tax bill — typically $200–$1,500 cost recovery.
Altadena, CA
LA County allows backyard chickens in R-1 zones in unincorporated areas (including Altadena) subject to coop setbacks under LA County Code Title 10 and Title...
Altadena, CA
LA County Code Section 10.32.010 prohibits dogs running at large in any public place or private property other than the owner's, unless restrained by a chain...
Altadena, CA
Commercial filming in Altadena's unincorporated areas requires a permit from FilmLA (the official film office contracted by LA County). Permits cover insuran...
Altadena, CA
Mobile food facilities operating in Altadena need a LA County Department of Public Health Mobile Food Facility permit, a LA County business license under Tit...
Altadena, CA
LA County Code Chapter 7.86 limits garage sales in residential zones to no more than 2 per calendar year per address, with each sale lasting no more than 3 c...
Altadena, CA
Drone airspace is federally regulated — 49 USC 44809 governs recreational use. Altadena is under JWA/Burbank/LAX/El Monte airspace controls. LA County parks ...
Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle grass height limits.
See how Altadena's grass height limits rules stack up against other locations.
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