Los Angeles — Zoning Code (Chapter 1)

Overview

Los Angeles administers land use under two companion codes: the legacy Planning and Zoning Code in Los Angeles Municipal Code Chapter 1 and the newer Zoning Code in Chapter 1A. Chapter 1 still governs many parcels and includes classic zones like R3 and PB, while Chapter 1A applies where the City has remapped areas with new zone “strings.” This page distills the Chapter 1 rules that still control in Los Angeles today and flags the Chapter 1A cross‑references that Chapter 1 relies on.

Key orientation: a Los Angeles zoning “string” can separate the built form from activities with two bracket sets — [Form–Frontage–Standards] [Use–Density] — and may add a third set for Specific Plans or Supplemental Districts (§ 1.5.2). Chapter 1 zones (e.g., R3) continue to apply where Chapter 1A has not been mapped (§ 1.4.2).

How Los Angeles organizes zoning rules (what applies where)

• The City’s modern zoning map uses district “strings.” Where Chapter 1A is mapped, the first set controls form/frontage/standards and the second set controls use/density (§ 1.5.2). Where areas are not remapped, the legacy Chapter 1 zones (e.g., R1, R3, C2) remain in force (§ 1.4.2). See the Los Angeles Zoning overview for how to look up your parcel.
• Chapter 1 and Chapter 1A interoperate. For example, Chapter 1 conditional use procedures point to Chapter 1A’s administrative classes (§ 12.24; § 13B.2.1–2.3 referenced in § 12.24).
• Additional regulations may layer through Specific Plans or Supplemental Districts shown as a third bracket set (§ 1.5.2). Check Los Angeles Overlay Districts if your parcel has supplemental controls.

District-by-district rules you’ll actually use

R3 Multiple Dwelling Zone (LAMC § 12.10)

Purpose: A core multifamily residential zone allowing apartments and related residential uses in urban neighborhoods.

Typical permitted uses (§ 12.10 A):

• Multiple dwellings, apartment houses, group dwellings, boarding/rooming houses (A.2–5).
• Child care facilities for up to 20 children (A.5.5).
• Accessory uses, home occupations (A.6), and accessory buildings as in R1 (A.8).
• Senior Independent Housing and Assisted Living Care Housing (A.11–12).

Key dimensional standards (§ 12.10 C):

• Front yard: 15 ft (10 ft on key lots) (C.1).
• Side yards: 5 ft each side for ≤2 stories; add 1 ft per story above the second, max required 16 ft (C.2).
• Rear yard: 15 ft (C.3).
• Lot area per dwelling unit: 800 sq ft (C.4).
• New citywide rule: Minimum density of 1 dwelling unit (or guest room) per 2,000 sq ft of lot area, rounded up, unless the zone’s lot-area-per-unit standard would prevent meeting the minimum (C.5).
• Where it applies: Mapped “R3” parcels citywide; confirm via the zoning map (§ 1.5.2). See Los Angeles Development Standards for how setbacks interact with form packages where Chapter 1A is mapped nearby.

Where standards are stricter than in other residential zones:

• R3’s 800 sq ft per DU often drives yield more than height/FAR in legacy-mapped areas; the new minimum-density rule ensures underbuilding does not occur (§ 12.10 C.4–C.5).

Table — Selected R3 standards you’ll check first

Practical note: R3 can be sensitive to small-lot width/area exceptions; if a legal substandard lot exists, special limits may cap units to two where under 4,000 sq ft (C.4). For nonconforming situations, see Los Angeles Nonconforming Uses.

R1V / R1F / R1R One-Family Zone Variations — Height

Purpose: Tailored single-family neighborhoods with variation-specific height rules.

• Lots zoned R1V, R1F, and R1R must meet the height limits in § 12.08 C.5.(b)–(d) via the cross-reference in § 12.21.6. Specific numeric heights are not included in the source materials here; confirm the actual feet/stories limits for your variation with the zoning text of § 12.08.
• Where it applies: Mapped R1V/R1F/R1R neighborhoods. Verify with the Zoning Information Map (§ 1.5.2).
  Not found in source materials: The exact height figures in § 12.08 C.5.(b)–(d).

PB Parking Building Zone (LAMC § 12.12.1.5)

Purpose: Dedicated sites for structured parking, sometimes integrated with other buildings, with tailored yard and design controls.

Typical permitted uses (§ 12.12.1.5 A):

• Any use permitted in the “P” Automobile Parking Zone (A.1).
• Parking buildings (stand‑alone or attached) with enclosing low walls to block horizontal light spill and with driveways per Traffic approvals (A.2).
• Limited accessory services inside the building (gasoline/oil, lubrication, tire/battery exchange); no washing or repairs; no exterior advertising of these services (A.3).
• Certain conditional uses by § 12.24 W.49 where approved (A.4).

Key dimensional standards (Yards; § 12.12.1.5 C):

• Front yard: 10 ft where frontage is in or across from A/RE/RS/R1/R2; 5 ft where in or across from RD/R3/R4/R5 (C.1).
• Side yard: 5 ft for ≤2 stories where abutting A/R, or where the side abuts a street across from A/R frontage; add 1 ft per story above the second (C.2).
• Rear yard: 5 ft for ≤2 stories where abutting A/R; add 1 ft per story above the second (C.3).
• Where it applies: Parcels mapped PB. Landscaping is required in yard areas; yards may not be used for parking (C.1–C.3).

Table — PB highlights

Practical note: Signs for accessory services are prohibited from exterior view (A.3). For broader sign controls, see Los Angeles Signage.

Lot-Limited Density Districts (1L–4L) — Chapter 1A Density tool

Purpose: Cap units by lot count in mapped Chapter 1A Density Districts.

• 1L / 2L / 3L / 4L districts cap maximum dwelling units on a lot at 1 / 2 / 3 / 4 units respectively (§ 6B.1).
• Where it applies: Only where a Chapter 1A Density District is mapped in the second bracket set of the zone string (§ 1.5.2). In Chapter 1 legacy zones, this cap does not apply unless remapped.

Corridor Transitions 1 (CT‑1) Alternate Typology — Chapter 1A housing incentive

Purpose: Allow moderate increases in scale for mixed‑income housing on transition blocks off major corridors.

Eligibility and intent:

• Applies only to lots mapped in the CT‑1 Incentive Set on the Mixed‑Income Housing Incentive Map and using § 9.2.4 (§ 7B.7.1 A–C).
• Aims to “smooth” transitions and support restricted affordable units using a package of alternate standards (§ 7B.7.1 B).

Key alternate form standards (where eligible):

• Base FAR set by Form District; Tier 1 Bonus FAR up to 1.45 and Tier 2 Bonus FAR up to 1.95; base 2 stories and up to 3 stories with bonuses (§ 7B.7.1 D; table).
• Bonus building width up to 75 ft; required 6 ft building breaks (§ 7B.7.1 D).

Where it applies: Only on CT‑1 mapped lots; confirm via the zoning maps (§ 1.5.2). See Los Angeles Land Use for how incentives interplay with base permissions.

Citywide use rules referenced by Chapter 1 and Chapter 1A

• How to find allowed uses in Chapter 1A areas: The fourth component of the zone string identifies the Use District; the Use District table provides permission levels and any applicable standards with citations to general/supplemental rules (§ 5A.1.2). Use applicability and combinations are governed by § 5A.2.2.
• Affordable housing standard: Where a mapped Use District table includes the “Affordable housing” use standard, projects with dwelling units must include at least the specified percentage of restricted affordable units; measurement excludes manager units (§ 5C.1.13 C–D).
• Conditional Use Permits: Uses not permitted by right in a Chapter 1 zone may be authorized via § 12.24, which routes to Chapter 1A’s Class 1/2/3 CUP procedures (§ 12.24 A.1–3). See Los Angeles Design Review if your project triggers broader project review thresholds.
• Automotive repair and used vehicle sales areas: Citywide annual inspection monitoring, fees, and potential Certificate of Occupancy revocation procedures apply (§ 13B.10.4).

Parking and mobility (citywide references)

• Automobile parking: Projects must provide the minimum number of automobile parking stalls specified by the Required Automobile Parking Table attached to the applied Development Standards District; mixed-use sums apply with limited sharing exceptions (§ 4C.4.1 C). EV charging requirements come from the local Green Building Code (§ 4C.4.1 C.1.c; see California Building Standards Code).
• Bicycle parking: Required for most new work. Examples (§ 4C.3.1):
  • Residential (4+ units):
    • First 25 units: Short‑term 1/10 du (min 2); Long‑term 1/du.
    • 26th–100th: Short‑term 1/15 du; Long‑term 1/1.5 du; ratios reduce for higher counts.
    • Exceptions for individually accessed private garages; supportive housing uses alternate SF‑based ratios (§ 4C.3.1 C.1).
  • General commercial: Short‑term 1/10,000 SF (min 2); Long‑term 1/10,000 SF (min 2); higher rates for Eating & Drinking and Entertainment (§ 4C.3.1 C.2).
  • Relief: Minor dimensional adjustments via Adjustment; broader relief via Variance (§ 4C.3.1 F). See Los Angeles Parking for automobile/bike packages and exceptions.

Signs (selected Chapter 1A standards commonly cross‑referenced)

• Awning signs: Only on compliant awnings; no higher than 14 ft to top of valance; in most use districts combined area is 2 sq ft per ft of street frontage, with 12 sq ft max per individual awning sign in certain packages (§ 4C.11.6).
• High‑rise signs (100 ft+ above grade): Must be parallel to the facade; area limits include 5% of wall area (type 1) or ≤50% of wall area / 800 sq ft (lesser) for type 2; projection ≤2 ft (§ 4C.11.6).
  Where assigned: Sign types apply by Sign Package specified by the applied Development Standards District (§ 4C.11.6; § 4C.11.5). See Los Angeles Signage.

Menu of administrative/project review touchpoints

• Major development review: Where the Development Standards District maps a Development Review Threshold Package, large projects (e.g., certain warehouse projects of 250,000 sq ft+) must use Project Review under § 13B.2.4, with specified appeals (§ 4C.14.1).
• Variations and relief: Adjustment (§ 13B.5.2) or Variance (§ 13B.5.3) may apply; see Los Angeles Variances and Exceptions.
• Historic areas and overlays: HPOZ/CD rules may supersede; TCN districts have their own sign regimes (§ 8.2.8). See Los Angeles Historic Preservation and Los Angeles Overlay Districts.

Checklist

• Confirm whether your parcel is regulated by Chapter 1 or has been remapped into Chapter 1A (zone string will show bracketed components) (§ 1.4.2; § 1.5.2).
• Identify the base district: R3, PB, etc., and compile permitted uses and dimensional standards (e.g., R3 yards and 800 sq ft/DU; PB yards) (§ 12.10; § 12.12.1.5).
• If in Chapter 1A, read the Use District table for permissions and any “Affordable housing” standard; note Density District (e.g., 1L–4L) (§ 5A.1.2; § 5C.1.13; § 6B.1).
• Check whether a CT‑1 or other incentive/alternate typology is mapped; if yes, confirm bonus FAR/stories metrics and affordable requirements (§ 7B.7.1).
• Calculate required automobile parking (per applied Development Standards District) and bicycle parking (by use and unit/SF counts) (§ 4C.4.1; § 4C.3.1).
• Verify any sign allowances/limits by Sign Package; coordinate with any Specific Plan/HPOZ rules (§ 4C.11.6; § 8.2.8).
• If your use needs a Conditional Use Permit, route under § 12.24 and the corresponding Class 1/2/3 procedure (§ 12.24).
• For automotive repair/used vehicle sales uses, budget for annual inspections and compliance duties (§ 13B.10.4).
• Coordinate building permits with the California Building Standards Code; check Los Angeles ADUs if adding accessory units and California housing laws if invoking state streamlining.

Risks & Ambiguities

Plain-English Summary

Los Angeles still uses the legacy Chapter 1 zones in many neighborhoods. In R3, you can build apartments subject to 15 ft front/rear yards and 800 sq ft of lot area per unit, with a new minimum density of 1 unit per 2,000 sq ft (§ 12.10). Structured parking in PB must keep 5–10 ft landscaped yards and meet light‑spill and driveway rules (§ 12.12.1.5). Citywide, newer Chapter 1A layers handle mapping, use tables, bicycle/auto parking, density caps, and sign packages; always confirm which code your parcel is in before designing (§ 1.4.2; § 1.5.2; § 4C.3.1; § 4C.4.1).

Source References

• LAMC § 1.4.1 (General Rules) — Chapter 1A intent and objectives.
• LAMC § 1.4.2 (Applicability of This Zoning Code) — where Chapter 1A applies and its relationship with Chapter 1.
• LAMC § 1.5.1–§ 1.5.2 (Zoning Code Maps; Zoning Map) — zone strings and mapping structure.
• LAMC § 4A.2.1; § 4A.1.3 — Development Standards and naming convention for standards districts.
• LAMC § 4C.3.1 — Bicycle Parking Spaces (ratios, applicability, relief).
• LAMC § 4C.4.1 — Automobile Parking Stalls (applicability; determining requirements).
• LAMC § 4C.11.6 — Sign Types (Awning, High‑Rise, and related dimensional standards).
• LAMC § 4C.14.1 — Development Review Threshold Packages (project review triggers).
• LAMC § 5A.1.2; § 5A.2.2 — How to use Article 5 (Use); Use applicability.
• LAMC § 5C.1.5 — Location (general use standard).
• LAMC § 5C.1.13 — Affordable Housing (general use standard).
• LAMC § 6B.1 — Lot‑Limited Density Districts (1L–4L).
• LAMC § 7B.7.1 — Corridor Transitions 1 Alternate Typology (CT‑1).
• LAMC § 8.2.8 — Transportation Communication Network District (TCN).
• LAMC § 11.2.02 — Definitions (Chapter 1).
• LAMC § 12.10 — R3 Multiple Dwelling Zone (uses, yards, lot area per unit, minimum density).
• LAMC § 12.12.1.5 — PB Parking Building Zone (uses, yards, restrictions).
• LAMC § 12.21.6 — Height in R1V, R1F, and R1R variations (cross‑reference to § 12.08 C.5.(b)–(d)).
• LAMC § 12.24 — Conditional Use Permits (Chapter 1 procedures referencing Chapter 1A classes).
• LAMC § 13B.10.4 — Annual Inspection Monitoring (Type 2) for automotive repair and used vehicle sales.

Source passages

• Los Angeles Zoning Code (§ 5C.1.13) Medium relevance show source text
• Los Angeles Zoning Code (§ 5A.1.2) Medium relevance show source text
• Los Angeles Zoning Code (§ 1.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 6B.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 12.21.6) Medium relevance show source text
• Los Angeles Zoning Code (§ 4C.3.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 4A.2.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 13B.10.4) Medium relevance show source text
• Los Angeles Zoning Code (§ 1.4.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 7B.7.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 12.24) Medium relevance show source text
• Los Angeles Zoning Code (§ 4A.1.3) Medium relevance show source text
• Los Angeles Zoning Code (§ 4C.4.1) Medium relevance show source text
• Los Angeles Zoning Code (§ 4C.11.6) Medium relevance show source text
• Los Angeles Zoning Code (§ 1.5.2) Medium relevance show source text
• Los Angeles Zoning Code (§ 5C.1.5) Medium relevance show source text

Cited sections

• LAMC § 1.4.1 (General Rules) — Chapter 1A intent and objectives. (§ 1.4.1)
• LAMC § 1.4.2 (Applicability of This Zoning Code) — where Chapter 1A applies and its relationship with Chapter 1. (§ 1.4.2)
• LAMC § 1.5.1–§ 1.5.2 (Zoning Code Maps; Zoning Map) — zone strings and mapping structure. (§ 1.5.1)
• LAMC § 4A.2.1; § 4A.1.3 — Development Standards and naming convention for standards districts. (§ 4A.2.1)
• LAMC § 4C.3.1 — Bicycle Parking Spaces (ratios, applicability, relief). (§ 4C.3.1)
• LAMC § 4C.4.1 — Automobile Parking Stalls (applicability; determining requirements). (§ 4C.4.1)
• LAMC § 4C.11.6 — Sign Types (Awning, High‑Rise, and related dimensional standards). (§ 4C.11.6)
• LAMC § 4C.14.1 — Development Review Threshold Packages (project review triggers). (§ 4C.14.1)
• LAMC § 5A.1.2; § 5A.2.2 — How to use Article 5 (Use); Use applicability. (§ 5A.1.2)
• LAMC § 5C.1.5 — Location (general use standard). (§ 5C.1.5)
• LAMC § 5C.1.13 — Affordable Housing (general use standard). (§ 5C.1.13)
• LAMC § 6B.1 — Lot‑Limited Density Districts (1L–4L). (§ 6B.1)
• LAMC § 7B.7.1 — Corridor Transitions 1 Alternate Typology (CT‑1). (§ 7B.7.1)
• LAMC § 8.2.8 — Transportation Communication Network District (TCN). (§ 8.2.8)
• LAMC § 11.2.02 — Definitions (Chapter 1). (§ 11.2.02)
• LAMC § 12.10 — R3 Multiple Dwelling Zone (uses, yards, lot area per unit, minimum density). (§ 12.10)
• LAMC § 12.12.1.5 — PB Parking Building Zone (uses, yards, restrictions). (§ 12.12.1.5)
• LAMC § 12.21.6 — Height in R1V, R1F, and R1R variations (cross‑reference to § 12.08 C.5.(b)–(d)). (§ 12.21.6)
• LAMC § 12.24 — Conditional Use Permits (Chapter 1 procedures referencing Chapter 1A classes). (§ 12.24)
• LAMC § 13B.10.4 — Annual Inspection Monitoring (Type 2) for automotive repair and used vehicle sales. (§ 13B.10.4)

• Official Los Angeles code library