Westlake Village — Overlay Districts

Last reviewed: July 3, 2026

Overview

Westlake Village's land-use rules are codified in the Westlake Village Zoning Ordinance (Article 9). The ordinance does not use the term "overlay district" or set out a separate combining/overlay zone framework; instead the City implements site- and area‑specific rules through established base zones, Specific Plan zones (for example, the Westlake North Specific Plan) and chapter-level special standards (e.g., design, landscaping, oak‑tree preservation) that functionally perform many overlay-like roles. See the list of base zones in § 9.3.010 and the Specific Plan rules in § 9.44.010 and § 9.24.030 for the Westlake North Specific Plan.

Note: this page stays strictly within the Westlake Village zoning/planning ordinance as retrieved; where the code does not establish something explicitly I state "Not found in retrieved materials" and recommend verifying with the City.

What the code actually says about "overlays"

• The explicit phrase "overlay district" / "overlay zone" is Not found in retrieved materials. Confirmed by reviewing Article 9 (Zoning) and the Specific Plan chapters. Instead the City relies on: (1) base zoning districts listed in § 9.3.010; (2) Specific Plan zones (e.g., MU—SP No. 1 / Westlake North Specific Plan) set out in § 9.44.010 and Chapter 9.24; and (3) dedicated chapters that impose standards across zones (e.g., Design Standards, Landscaping, Parking, Oak Tree Preservation).

Because Westlake Village does not declare overlay districts in Article 9, read any parcel‑specific constraints as either: (a) a base-zone regulation, (b) Specific Plan entitlement text and maps, or (c) conditions of approval (planned development permits, CC&Rs, easements). See § 9.24.030 and § 9.24.110 for Specific Plan entitlements and modification rules.

(Internal links: start with a quick orientation to the City's planning pages at Westlake Village zoning & planning overview and the specific Westlake Village Zoning page. When you need to check standards referenced below consult Westlake Village Development Standards, Westlake Village Parking, Westlake Village Design Review, Westlake Village ADUs and the California Building Standards Code.)

District-by-district breakdown (what behaves like an "overlay" in practice)

The ordinance identifies base zones in § 9.3.010; below I treat each named zone as the unit a homeowner or applicant will check first. Where the code supplies a zone chapter I cite it; where text is not present in retrieved materials I mark that explicitly.

Notes: every bold zone name below is the exact local designation from § 9.3.010. For plan-level, the Westlake North Specific Plan is in Chapter 9.24 and is designated MU—SP No. 1 on the zoning map per § 9.44.010.

R-1 (Single-Family Residential) — R-1

• Purpose: The R-1 district is the City's single-family residential zone; it is listed among the established zones in § 9.3.010.
• Typical permitted uses: Single-family dwellings and accessory uses; accessory dwelling units (ADUs) are regulated by Chapter 9.14 and the City’s ADU rules; see § 9.14.070 for ADU process.
• Key dimensional standards: Specific numeric setbacks, lot coverage, and height limits for R-1 were not reproduced in the retrieved excerpts as a single table; check the Official Zoning Map and Chapter 9.14/9.06 for parcel-level standards. Not found in retrieved materials for a consolidated R-1 table. Verify with the City.
• Where it applies: Boundaries are shown on the Official Zoning Map; the rules for uncertainty of zone boundaries are in § 9.3.030.

RPD (Residential Planned Development) — RPD

• Purpose: RPD allows planned residential developments under a PDP (Planned Development Permit) so projects can negotiate site-specific standards while meeting General Plan objectives; see § 9.6.010.
• Typical permitted uses: Single‑family dwellings, employee housing, multifamily dwellings, apartments (subject to a Planned Development Permit) — see § 9.6.020.
• Key dimensional / project standards: RPD developments must provide common open space standards (e.g., 200 sq ft per 2+ bedroom unit) and other open-space/parking/design requirements; those open-space standards are in § 9.6.110. Design findings and required findings for PDP approval are in § 9.6.120.
• Where it applies: See Official Zoning Map and PDP approvals; RPD projects are also subject to Chapter 9.14 (Development Standards), 9.15 (Design Standards) and 9.19 (Parking).

MHP (Mobilehome Park) — MHP

• Purpose: MHP provides for mobile‑home parks (Chapter 9.7).
• Typical permitted/conditional uses: Mobile home parks and accessory uses; certain uses may require a Conditional Use Permit as listed in § 9.7.020.
• Key standards: The chapter addresses permitted/conditionally permitted uses and design considerations for mobile home parks; detailed dimensional numeric tables were not reproduced in the retrieved excerpts. Not found in retrieved materials for consolidated numeric table. Verify with the City.

CPD (Commercial Planned Development) — CPD

• Purpose: CPD is intended for a broad range of retail and service commercial activities under a Planned Development Permit; see § 9.8.010.
• Typical permitted uses: Food sales, personal/convenience services, consumer repair, medical services (excluding hospitals), general retail, professional/financial services, administrative and business services — see the list in § 9.8.020.
• Key dimensional standards: CPD uses are subject to PDP review and the general development chapters (Chapter 9.14 Dev Standards; 9.15 Design; 9.19 Parking). Site-specific setbacks and coverage are set at PDP or by Chapter 9.14; exact numeric values are project-specific.
• Where it applies: As shown on Official Zoning Map; commercial Planned Development activity is controlled through Chapter 9.25 PDP process.

CR (Commercial Recreation) — CR

• Purpose & uses: The CR zone is listed among established zones in § 9.3.010; the code groups CR with other commercial zones when applying design and parking standards (see Chapters 9.14, 9.15, 9.19). Specific CR permitted uses or numeric standards were not reproduced in the retrieved excerpts. Not found in retrieved materials for a detailed CR table.

BP (Business Park) — BP

• Purpose & uses: BP is a base zone listed in § 9.3.010; Chapter-level BP rules and the Westlake North Specific Plan (Planning Area D) supply business park expectations (e.g., parking, setbacks, interface with residential areas). For example, Planning Area D standards are set in § 9.24.030 and supporting subsections.
• Key example standards (Specific Plan only): Planning Area D design concerns and required screening/landscaping are called out in the Westlake North Specific Plan (see Planning Area D details and required screening measures). Numeric values for FAR, heights and setbacks in planning areas are in § 9.24.030 / § 9.24.050.

MU (Multiple Use) — MU

• Purpose & uses: MU is used as the zoning designation for the Westlake North Specific Plan area (designated MU—SP No.1 per § 9.44.010). The Specific Plan (Chapter 9.24) defines planning areas A–F, permitted uses and numeric standards (FAR, max height, coverage) for each. See § 9.24.030 chart for Planning Areas A–F (FAR and heights).

PI (Public/Institutional) — PI

• Purpose & uses: PI is listed in § 9.3.010 as the Public/Institutional Zone; detailed PI-specific program text was not reproduced in the retrieved excerpts. Not found in retrieved materials for a PI chapter excerpt. Verify with the City.

OS (Open Space) — OS

• Purpose & uses: OS is the Open Space Zone (listed in § 9.3.010); Chapter-level references to Open Space occur within specific plans (e.g., Westlake North Specific Plan), and OS-designated parcels are governed by the applicable plan and by Chapters 9.14–9.19 where relevant. The Specific Plan maps and text specify where OS applies (see Chapter 9.24).

SP (Specific Plan) — SP / MU—SP No. 1 (Westlake North)

• Purpose: Chapter 9.24 sets out the Westlake North Specific Plan and is established as a Specific Plan zone; the map designation is MU—SP No. 1 under § 9.44.010. The Specific Plan provides planning-area-level entitlements (FAR, height, allowed uses per planning area).
• Key decision-relevant numbers (examples from the Specific Plan summary chart in § 9.24.030): Planning Areas list Max FARs (e.g., Area D: 0.45/0.55 gross/net), Max building heights (e.g., Area A: 65 ft, Area D: 57 ft, Area E: 35 ft), and gross/net acreage and allowable square footage by planning area. See the chart in § 9.24.030 and Planning Area design guidance in § 9.24.050.
• Modifications: The Specific Plan allows the City Council to approve modifications to development standards by public hearing if findings are met (see § 9.24.110).

Quick decision table — "Is there an overlay?" (decision-relevant)

Practical guidance / plain-English interpretation (how applicants should treat "overlay" questions)

• If a project description or buyer/seller asks "is this property in an overlay?" treat that as two steps: (1) check the Official Zoning Map and the parcel's base zone (§ 9.3.010 / § 9.3.020); (2) check whether the parcel lies inside a Specific Plan area (particularly the Westlake North Specific Plan / MU—SP No. 1) or is subject to project‑level conditions of approval (PDP, CUP, CC&Rs). See § 9.3.020 on how map boundaries are adopted and interpreted.
• Treat chapters such as Design Standards (§ 9.15) and Off‑Street Parking (§ 9.19) as citywide overlay‑like requirements that apply in addition to the base zone rules; they must be complied with regardless of the absence of an "overlay" label.
• For parcel‑specific relief or tailored standards the City uses the Planned Development Permit process or the City Council's Specific Plan modification authority rather than a separate overlay map. See § 9.24.110 (Specific Plan modifications) and Chapters 9.25–9.26 for PDP/CUP processes.

Checklist — what an applicant must satisfy (if a property owner asks whether an "overlay" applies)

• Confirm the parcel's base zone on the Official Zoning Map and the zone listed in § 9.3.010. Verify uncertain boundaries per § 9.3.030.
• Confirm whether the parcel is inside any Specific Plan area (e.g., MU—SP No. 1) — check Chapter 9.24 Planning Area maps and § 9.44.010.
• Determine whether PDP/CUP conditions or recorded CC&Rs impose site‑specific constraints (conditions of approval may supersede or supplement base standards) — see PDP rules and CC&R requirements in Chapters 9.25 and 9.24.120. Not all CC&R text is in the zoning file excerpts; verify recorded documents.
• Meet applicable chapter standards: Design (§ 9.15), Development Standards (Chapter 9.14), Landscaping (§ 9.16), Parking (§ 9.19), Oak/heritage tree protection (§ 9.21) as relevant.
• If proposing an ADU, follow the ministerial ADU process in § 9.14.070 and the ADU‑specific provisions (ministerial vs building‑permit-only paths). Also confirm consistency with the California Building Standards Code.
• Obtain a Zoning Clearance (Planning Director) where required prior to building permits — see § 9.4.040.

Risks & Ambiguities

Plain-English summary

Westlake Village does not label any zone an "overlay district." Instead, parcel‑level special rules are implemented through base zones, Specific Plan areas (notably the Westlake North Specific Plan, MU—SP No. 1), and citywide chapters for design, parking, landscaping and tree protection; check the Official Zoning Map, the Specific Plan maps and any project conditions for the parcel to determine the applicable constraints.

Source References

• Westlake Village Zoning Ordinance (Article 9 — Title/ Purpose): § 9.1.010.
• Establishment of Zoning Districts (list of zones): § 9.3.010.
• Zoning map adoption and boundary rules: § 9.3.020 / § 9.3.030.
• RPD zone (Residential Planned Development): § 9.6.010–§ 9.6.120 (purpose, permitted uses, open-space requirements).
• CPD zone (Commercial Planned Development): § 9.8.010–§ 9.8.020 (purpose and permitted uses).
• Zoning Clearance (ministerial check before building permit): § 9.4.040.
• Design Standards: Chapter 9.15 (applicability and standards).
• Landscaping Standards: Chapter 9.16.
• Off‑Street Parking and Loading Standards: Chapter 9.19.
• Westlake North Specific Plan (Planning Areas A–F — FAR, heights, area tables): § 9.24.020, § 9.24.030, § 9.24.050, § 9.24.110.
• ADU rules and ministerial processes: Chapter 9.14 and § 9.14.070 (ADU process / Building Permit Only Process).

Retrieved passages

• Westlake Village Zoning Code (section shall) High relevance show source text
• Westlake Village Zoning Code (Section or) High relevance show source text
• Westlake Village Zoning Code (Section 65454) High relevance show source text
• Westlake Village Zoning Code (ARTICLE 9.) High relevance show source text
• Westlake Village Zoning Code (Chapter 9.16) Medium relevance show source text
• CBC § 66321 (§ 66321) Medium relevance show source text
• California Building Code Medium relevance show source text
• CMC § 304.8 Medium relevance show source text
• Westlake Village Zoning Code High relevance show source text
• CBC § 040 (Article except) High relevance show source text
• CBC § 9.14.070 (Section 9.14.070) Medium relevance show source text
• Westlake Village Zoning Code (Section 65454) High relevance show source text
• Westlake Village Zoning Code (Chapter 9.15.) High relevance show source text
• Westlake Village Zoning Code (§ 66314) Medium relevance show source text
• Westlake Village Zoning Code (§ 65915) Medium relevance show source text
• Westlake Village Zoning Code (Section 106) Medium relevance show source text
• Westlake Village Zoning Code High relevance show source text
• Westlake Village Zoning Code (Chapter 9.17) High relevance show source text

Cited sections

• Westlake Village Zoning Ordinance (Article 9 — Title/ Purpose): **§ 9.1.010**. (Article 9)
• Establishment of Zoning Districts (list of zones): **§ 9.3.010**. (§ 9.3.010)
• Zoning map adoption and boundary rules: **§ 9.3.020** / **§ 9.3.030**. (§ 9.3.020)
• RPD zone (Residential Planned Development): **§ 9.6.010–§ 9.6.120** (purpose, permitted uses, open-space requirements). (§ 9.6.010)
• CPD zone (Commercial Planned Development): **§ 9.8.010–§ 9.8.020** (purpose and permitted uses). (§ 9.8.010)
• Zoning Clearance (ministerial check before building permit): **§ 9.4.040**. (§ 9.4.040)
• Design Standards: **Chapter 9.15** (applicability and standards). (Chapter 9.15)
• Landscaping Standards: **Chapter 9.16**. (Chapter 9.16)
• Off‑Street Parking and Loading Standards: **Chapter 9.19**. (Chapter 9.19)
• Westlake North Specific Plan (Planning Areas A–F — FAR, heights, area tables): **§ 9.24.020**, **§ 9.24.030**, **§ 9.24.050**, **§ 9.24.110**. (§ 9.24.020)
• ADU rules and ministerial processes: Chapter **9.14** and **§ 9.14.070** (ADU process / Building Permit Only Process). (§ 9.14.070)
• WestlakeVillage_ZoningCode.md

• Official Westlake Village code library