In unincorporated LA County, decks not more than 30 inches above grade and not over any basement or story below are exempt from building permits. Elevated decks, covered patios, and attached patio covers require permits from the DPW Building and Safety Division.
Under the California Building Code (as adopted by LA County in Title 26), decks, walks, and driveways not more than 30 inches above adjacent grade at any point and not placed over any basement or story below are exempt from building permits. Decks above 30 inches require a building permit and must meet structural, setback, and guardrail requirements (42-inch guardrails required for decks 30+ inches above grade). Covered patios and patio covers (pergolas with roofing) are considered structures and require permits. Setback requirements apply — typically 5 feet from property lines for accessory structures. In hillside areas, additional geotechnical review may be required. Patios at or near grade level (concrete slabs, pavers) generally do not require permits unless they affect drainage or are part of a larger project.
Building an elevated deck without a permit may result in a stop-work order, required engineering review, double permit fees, or mandatory demolition if it cannot meet code.
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
Trimming protected oak trees (≥8 in DBH) requires an Oak Tree Permit if the work enters the protected zone or removes >25% of crown. Street trees in the publ...
Altadena, CA
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.
Altadena, CA
LA County Fire's Brush Clearance program also functions as the weed-abatement ordinance — vacant and improved lots must keep weeds and grasses cut to under 3...
Altadena, CA
Outdoor watering in Altadena (served by Lincoln Avenue Water Co., Las Flores Water Co., Rubio Cañon, and Kinneloa Irrigation District) is limited to 2 days p...
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