Los Angeles County Zoning, Planning & Building Codes

Last reviewed: July 3, 2026

Overview

Los Angeles County’s land use and zoning rules that apply to unincorporated areas are codified in Title 22 — Planning and Zoning of the Los Angeles County Code (the County “Zoning Code”). Title 22 is the primary implementing ordinance for the County General Plan and specific plans that apply within unincorporated communities (§ 22.02.010, § 22.02.030) . The Code is organized into topical chapters (residential, commercial, industrial, parking, overlays, specific plans, hearings/permitting) and a hierarchy of place‑based districts (specific plans, Planning Area Standards Districts, Community Standards Districts, Supplemental Districts) that can supersede base zone rules (§ 22.02.010, § 22.300.020) .

(Links: the County zoning menu is Los Angeles County Zoning.)

How Los Angeles County's code is organized

• Title name and scope — Title 22 is explicitly titled the County’s Planning and Zoning Code and applies to properties in the unincorporated areas of Los Angeles County (§ 22.02.010, § 22.02.030) .
• Structure — Title 22 is divided into Divisions and Chapters (e.g., Division 1 Introductory Provisions; chapters for residential zones, commercial zones, industrial zones, parking, permitting, and specific plans). Specific plans are maintained in Volume III and are integrated with Title 22 (§ 22.46.080, § 22.46.090) .
• Hierarchy and area-based rules — place-based districts such as Planning Area Standards Districts (PASD), Community Standards Districts (CSD), and Supplemental Districts are applied to geographic areas and have a clear precedence/hierarchy over base zone standards where stated (§ 22.300.020) .
• Administrative chapters — separate chapters control parking (Chapter 22.112), coastal development permits and coastal LCP implementation (Part 17 / Chapter 22.56), nonconforming uses (Chapter 22.172), density bonus and affordable‑housing programs (Chapters such as 22.120, 22.119), and appeals and hearings procedures (Chapters 22.220, 22.232) — see the cited parts in Title 22 for each program (§ 22.56.2270, § 22.56.2280, § 22.220.020) .

Zoning district families (how the County labels zones)

The County groups zones into families; the County’s Title 22 references specific chapters for each family (examples below are named exactly as they appear in Title 22):

• Residential zones — regulated in Chapter 22.18 (Residential Zones); typical district labels include R-1, R-2, R-3, R-4 and variants used in community plans and PASDs (§ 22.18 referenced throughout Title 22) .
  • Example: the R-3 development standards (including 15 ft front yard, 5 ft side yard, second‑story stepbacks, and 35 ft maximum height) are shown in the R‑3 standards tables (§ 22.362.070-B) .
• Commercial zones — in Chapter 22.20 (Commercial Zones); County also uses context‑specific commercial zones inside specific plans (examples: C-3, CSLA CC) with tailored FAR, setbacks and height limits (§ 22.20, § 22.416.090) .
  • Example: a community commercial district table shows FAR up to 1.5 and building heights up to 50 ft in zones like CSLA CC (Table 22.416.090‑C) (§ 22.416.090) .
• Industrial zones — in Chapter 22.22 (Industrial Zones) with M‑zones like M‑1 and tailored Industrial standards and buffers (see Florence‑Firestone M‑1 modifications: minimum lot sizes, buffers, lot coverage) (§ 22.22, § 22.110 modifications) .
• Mixed‑use and special campus zones — e.g., MXD, CSLA IT and other campus or institutional zones are set out in their dedicated chapters/tables and include specific FAR, height, and orientation rules (§ 22.26, § 22.416.120) .
• Area‑based designations and overlays — many areas are regulated by Specific Plans (Volume III, e.g., Marina del Rey Specific Plan, Santa Catalina Island Specific Plan, Universal Studios Specific Plan) and by PASDs/CSDs which supersede or refine base zones (§ 22.46.080, § 22.46.090, § 22.300.020) .

(Links: for the base zoning menu see Los Angeles County Zoning and for overlays see Los Angeles County Overlay Districts.)

Citywide development standards (high‑level summary)

Title 22 sets countywide baseline development standards but allows place‑based documents to modify them.

• Setbacks, lot coverage and height
  • Countywide maxima and minima are expressed in zone tables and in area‑specific chapters; for many non‑CPD/MPD zones the Code sets a maximum lot coverage of 70% for new structures (except where CPD/MPD say otherwise) (§ 22.312.080(5)) .
  • Proximity height limits: a general rule limits new structures to 35 ft if within 500 ft of residential or agricultural zoned parcels (exclusions for chimneys/antennas) (§ 22.312.080(6)) .
  • Example neighborhood tables (e.g., R‑3) explicitly list front yard depths (15 ft min), side yards (5 ft), rear (15 ft), and 35 ft height caps shown in the R‑3 table (§ 22.362.070-B) .
• Floor Area Ratio (FAR) and density
  • FAR and allowable residential densities are expressed in each zone table (examples: FAR 1.0–1.5 or up to 3.0 for intensive campuses) and are implemented at the zone or specific‑plan level (§ 22.416.090, § 22.416.120) .
• Parking
  • Parking requirements are set out in Chapter 22.112 (Parking) and supplemented/modified by PASDs, Specific Plans, and walkable community standards; projects must follow Chapter 22.112 unless a specific plan or other provision modifies those requirements (§ 22.112 referenced in Title 22) .
  • Where special industries (e.g., trucking district) or campus uses apply, the Code prescribes specialized parking or loading standards (e.g., tractor‑truck stalls) (§ 22.312.080(4)) .

(Links: Los Angeles County Development Standards; and the County’s parking chapter at Los Angeles County Parking.)

Design, discretionary review, and administrative paths

• Administrative vs. discretionary review — Title 22 distinguishes ministerial approvals from discretionary (Type II–IV) reviews; larger or more impactful projects go through discretionary processes described in Chapter 22.232 and related hearing rules (§ 22.232; Type IV referenced) .
• Decision makers — the Director, Hearing Officer, Regional Planning Commission, and Board of Supervisors each have defined roles: for example, the Board adopts amendments and hears appeals on CEQA determinations (§ 22.220.020) .
• Design guidance and specific plans — many areas require design concepts, design review, or compliance with specific‑plan design standards (Marina del Rey, Universal Studios, Santa Catalina Island all include design guidance and site‑specific standards that supersede base zone rules) (§ 22.46.080, § 22.46.1000, § 22.408.040) .

(Links: first mention of design review goes to Los Angeles County Design Review.)

Specific plans & overlays (how place‑based rules change the base code)

• Specific Plans (Title 22 Volume III) — Specific Plans (e.g., Marina del Rey Specific Plan § 22.46.1000, Santa Catalina Island Specific Plan § 22.46.050, Universal Studios Specific Plan § 22.408.040) are self‑contained implementation documents that may supersede base zone rules for properties inside their boundaries and include land‑use districts, development standards, and required public improvements (§ 22.46.080, § 22.46.090, § 22.408.040) .
• Planning Area Standards Districts (PASD) and Community Standards Districts (CSD) — these area‑based districts provide additional or modified development standards that apply by hierarchy; the Code establishes a precedence order when multiple area standards apply (§ 22.300.020) .
• Overlays and supplemental districts — the code includes overlays such as Waterfront Overlay, Mixed Use Overlay, Green Zone, and others; a specific plan or overlay may explicitly supersede or modify Title 22 provisions (§ 22.46.1840, § 22.300.030 and other overlay references) .

(Links: first mention of overlays goes to Los Angeles County Overlay Districts.)

Building permits & review — practical permit path

• Permit layers — a development in unincorporated Los Angeles County commonly requires: (1) a zoning clearance/land‑use determination under Title 22; (2) any discretionary entitlements (conditional use permits, variances, coastal development permits) under Title 22 chapters (e.g., Chapter 22.56 for coastal permits); (3) building permits under the County Building Code (Title 26 / California Building Standards) and other agency permits (§ 22.02.030, § 22.56.2280, Title 26 references) .
• Coastal and special permitting — projects in the coastal zone must obtain a Coastal Development Permit and follow Part 17 procedures (Chapter 22.56) in addition to other County permits (§ 22.56.2270, § 22.56.2280) .
• Appeals and findings — discretionary approvals require written findings; appeal routes and the Board’s role are laid out in Chapters 22.232 and 22.240 and in the Board/Commission duties (§ 22.232, § 22.220.020) .
• Building code alignment — building permits are issued to ensure conformance with the County Building Code (Title 26) and the California Building Standards; Title 22 cross‑references the County Building Code for technical building standards (§ 22.406.030 referencing Title 26) .

(Links: link the building code mention to California Building Standards Code.)

State housing law in Los Angeles County (how state law interacts with Title 22)

Title 22 integrates and cross‑references statewide housing statutes; the County’s local rules must be read together with state law.

• Accessory Dwelling Units (ADUs / JADUs)
  • Title 22 explicitly makes ADUs and JADUs subject to the County ADU rules in Section 22.140.640 and ties local ADU treatment to state law; local ADU standards cannot conflict with mandatory elements of state ADU law (§ 22.300.020 referencing § 22.140.640) .
  • State ADU limits (unit size, 4‑ft side/rear setbacks, ADU height caps in certain transit contexts, parking waivers) are implemented through the County’s ADU section and related permit procedures — see the County ADU section and state ADU guidance (California ADU law) (§ 22.140.640) . (For the state rules and recent changes see the 2025 ADU handbook summary in the materials provided.) .
  • The County’s Title 22 also states that ADUs in PASDs/CSDs remain subject to § 22.140.640 (i.e., the County channels ADU approvals through its ADU chapter even inside area districts) (§ 22.300.020(A).3) .
• Density bonus, affordable housing, and housing permits
  • Title 22 includes local implementing chapters for density bonus, affordable‑housing replacement, inclusionary provisions and housing permits (Chapters 22.119, 22.120, 22.121, 22.166 are all cross‑referenced within area‑based rules) (§ 22.300.020(A).4) .
• SB 9, tenant protections, and rent regulation
  • Title 22 includes housing permit chapters but the specific local implementation of state laws such as SB 9 or local rent regulation is not fully described in the retrieved Title 22 excerpts. Where the Code implements state statutes it does so by cross‑reference to the relevant County chapter for housing entitlements (§ 22.300.020 and related housing chapters), but specific SB 9 procedures were not found in the retrieved files (see Information Gaps) .

(Links: link ADU discussion to California ADU law and state housing laws to California housing laws.)

Practical orientation — what to check first

1. Is your property inside the unincorporated area? Title 22 applies only to unincorporated properties (§ 22.02.030) .
2. Identify the parcel’s base zone and any overlays/specific plans (check the Zoning Map and Specific Plan chapters — e.g., Marina del Rey, Universal Studios, Catalina all have their own rules which can supersede Title 22) (§ 22.46.080, § 22.46.090) .
3. Look up the zone table for the parcel (setbacks, height, FAR, permitted uses) — zone tables appear in the chapter for each zone (Residential: Chapter 22.18; Commercial: Chapter 22.20; Industrial: Chapter 22.22) (§ 22.18, § 22.20, § 22.22) .
4. Confirm any discretionary entitlements required (CUP, Variance, Housing Permit, Coastal Development Permit) and follow the corresponding chapter and appeal paths (§ 22.158, § 22.166, § 22.56.2280, § 22.232) .
5. For construction permits, follow the County Building Code (Title 26) and California Building Standards for technical compliance (§ 22.406.030 referencing Title 26) .

(Links: for parking and other operational rules see Los Angeles County Parking, and for design-related requirements see Los Angeles County Design Review.)

Information Gaps / Items to verify with the County

• Local rent‑control or tenant‑protection ordinances for unincorporated areas were not found in the retrieved Title 22 excerpts; Title 22 focuses on land use and permits — verify with the Department of Consumer and Business Affairs or County counsel. Not found in retrieved materials.
• Specific local procedures implementing SB 9 (ministerial lot splits / duplex conversions) were not present in the materials reviewed; check Chapter 22.166 (Housing Permits) and County administrative updates for SB 9 implementation (not located in the retrieved excerpts) .
• For floor‑by‑floor numeric standards for every zone (every R‑zone and C‑zone table) consult the full chapter tables in Title 22 (the excerpts above illustrated many examples but are not exhaustive) (§ 22.362.070‑B, § 22.416.090) .

Source References

• Title 22 — Planning and Zoning (Los Angeles County Code), Divisions and Chapters cited above: § 22.02.010, § 22.02.030, § 22.300.020, § 22.46.080, § 22.46.090, § 22.362.070‑B, § 22.312.080, § 22.416.090, § 22.416.120, § 22.56.2270, § 22.56.2280, § 22.140.640, § 22.172, § 22.220.020, § 22.232 — source material (Title 22 print/export) .
• Marina del Rey Specific Plan and Marina LCP references (§ 22.46.1000, § 22.46.1010, § 22.46.1020) — Specific Plan text and organization .
• Universal Studios Specific Plan (Specific Plan relationship to Title 22) and related implementation sections (§ 22.408.040) .
• Santa Catalina Island Specific Plan (organization and land‑use districts) (§ 22.46.050, § 22.46.070) .
• ADU/state law summary (2025 ADU handbook summary; how state ADU law constrains local ADU rules) — provided state guidance and summary (ADU height, setbacks, parking waivers) .
• Additional excerpted community/zoning tables and area standards (Willowbrook Residential 1 Zone, Imperial Commercial Zone, CSLA CC Zone tables, Florence‑Firestone modifications) — specific tables and area standards (e.g., § 22.412.080, § 22.416.090, § 22.312.080) .