Environmental Rules in Los Angeles, CA (2026)
6 verified environmental rules for Los Angeles, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Los Angeles prohibits illicit discharges to the storm drain system and requires all dischargers citywide to comply with federal and state water quality laws under the Stormwater and Urban Runoff Pollution Control program.
Environmental: Stormwater
Some RestrictionsLos Angeles Municipal Code (LAMC) § 64.70
SEC. 64.70. GENERAL PROVISIONS. A. Title. This article is known as "Stormwater and Urban Runoff Pollution Control" and may be so cited. B. Objectives. [...] the City seeks to protect and promote the public health, safety and general prosperity of its citizens with the implementation of the following objectives: 1. To comply with all Federal and State laws, lawful standards and or...
Erosion Control
Hillside grading that disturbs vegetative ground cover requires erosion control to be completed within 30 days of work stoppage. Cut and fill slopes must have paved interceptor terraces installed every 25 vertical feet.
Environmental: Erosion Control
Some RestrictionsLAMC §§ 91.7005.3 and 91.7013.1
91.7005.3. Removal of Ground Cover. The existing vegetative ground cover of any watershed in any hillside area shall not be destroyed, removed or damaged except pursuant to lawful grading, use or occupancy of the property. Except for California native oak, bay, black walnut and sycamore trees regulated by the provisions of Article 7 of Chapter I or Article 6 of Chapter IV of the Los Angeles Mun...
Coastal Development
Properties in the California Coastal Zone (Venice, San Pedro, Pacific Palisades, etc.) require a Coastal Development Permit from the California Coastal Commission or the city's local coastal program. LID standards apply with emphasis on groundwater replenishment. Development must minimize impacts on coastal access, views, and habitat. LA has specific plans for Venice, Playa del Rey, and San Pedro.
Los Angeles Coastal Development Rules
Some RestrictionsCalifornia Coastal Commission — Coastal Zone Boundary Maps (Public Resources Code Sec. 30103, Coastal Act of 1976)
Public Resources Code (PRC) Section 30103(a) specifically defines California's Coastal Zone as that land and water area of the State of California from the Oregon border to the border of the Republic of Mexico depicted on maps identified and set forth in Section 17 of that chapter of the Statutes of the 1975-76 Regular Session enacting PRC Division 20 (the Coastal Act of 1976). PRC Section 3010...
Flood Zones
Los Angeles adopts FEMA's Flood Insurance Rate Map and the 2012 Flood Insurance Study for the City of Los Angeles as its official flood hazard map for building code purposes.
Environmental: Flood Zones
Light RestrictionsLAMC § 91.1612.3
91.1612.3. Establishment of Flood Hazard Areas. To establish flood hazard areas, the applicable governing authority shall adopt a flood hazard map and supporting data. The flood hazard map shall include, at a minimum, areas of special flood hazard as identified by the Federal Emergency Management Agency in an engineering report entitled "The Flood Insurance Study for The City of Los Angeles", ...
Defensible Space
Properties in or near Very High Fire Hazard Severity Zones must maintain 100 feet of defensible space around structures, with annual LAFD brush clearance inspections in hillside neighborhoods. Failure triggers code-enforcement action and forced abatement.
Defensible Space and Brush Clearance Requirements
Some RestrictionsCalifornia Public Resources Code Sec. 4291 (Defensible Space Around Structures in State Responsibility Areas)
4291. (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 sha...
Flood Elevation Requirements
When a Los Angeles building site lacks a specified design flood elevation, LAMC § 91.5.322.1.4.1 lets the building official require applicants to either use existing federal or state flood data or have a registered civil engineer calculate the elevation using accepted hydrologic and hydraulic engineering methods before permits move forward.
Los Angeles Flood Elevation Determination Rules
Some RestrictionsLAMC § 91.5.322.1.4.1
91.5.322.1.4.1. Determination of Design Flood Elevations. (Amended by Ord. No. 186,503, Eff. 3/11/20.) If design flood elevations are not specified, the building official is authorized to require the applicant to comply with either of the following: 1. Obtain and reasonably use data available from a federal, state or other source; or 2. Determine the design flood elevation in accordance with ac...
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