Local zoning · Westminster

Westminster — Overlay Districts

Q: What overlays exist in Westminster and where are they defined?

The overlay zones are set out in Chapter 17.250 of the Westminster Zoning Code and include, among others, PD (Planned Development), H (Housing), P (Parking), LS (Little Saigon), CV (Civic Center), and ES (Emergency Shelter); the chapter explains overlay applicability and that overlays are appended as suffixes to base zones on the zoning map ( § 17.250.005 , § 17.250.010 ) .

Overlay Districts under the Westminster local zoning and planning code, with the controlling citations.

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Last reviewed: July 3, 2026

Overview

Westminster’s overlay zones are special-purpose zoning “suffixes” appended to base districts that add location-specific rules and allow deviations or additional requirements where sensitivity, design, or housing goals exist. The overlay rules are collected in Chapter 17.250 (Overlay Zones) and apply in addition to the base zone; where there is conflict the overlay chapter governs (see § 17.250.005 and § 17.250.010) . Before applying any overlay rule, confirm the zoning map designation for the parcel (overlay suffixes are appended to the base zone symbol) (§ 17.250.010) .

Note on related topics: projects in overlay areas still must meet city development standards (see Westminster Development Standards), address parking requirements, and typically proceed through design review where design manuals are referenced. Also, accessory dwellings remain subject to the ADU chapter and the ADU page where noted below. Finally, construction permits remain subject to state rules such as the California Building Standards Code (Title 24) — but this page covers only Westminster overlay zoning rules, not building code requirements.

How overlays work in Westminster (short legal grounding)

Overlays are established in Chapter 17.250; they are appended as suffixes to base zones on the official zoning map (example: C2-LS-PD) and their rules apply in addition to base district rules; in a conflict, Chapter 17.250 controls (§ 17.250.005, § 17.250.010) .
Specific plan areas may act as overlays or replace underlying zoning — see § 17.240.030 (Specific Plan / SP) .

Overlay districts — district-by-district breakdown

Planned Development Overlay — PD (17.250.030)

Purpose: Applies to large-scale multifamily, commercial complexes, or sites appropriate for integrated mixed development. It implements planned development land use objectives and can be applied within commercial zones for combined commercial/residential/live-work projects (§ 17.250.030.A) .
Typical permitted uses: Not fixed in the ordinance text — permitted uses and standards for any given PD are set by the City Council via rezoning and by approval of a required Comprehensive Plan for the PD site; the PD is tailored to the project and may reference similar base districts when establishing uses (§ 17.250.030.B.3) .
Key development standards (baseline items stated in code):
- Minimum site area for rezoning to PD: one-half acre (0.5 ac) (§ 17.250.030.B.1) .
- Permits: All development within a PD requires approval of a Comprehensive Plan per Chapter 17.560; subsequent land-use changes may be controlled by the Council through rezoning or comprehensive plan amendments (§ 17.250.030.B.2–3) .
- Height limit (overlay-specific): Building height in a PD “shall not exceed the width of the street, or the widest street, upon which the building faces” (§ 17.250.030.B.4) .
- Utilities: Required utilities within PD districts must be placed underground (§ 17.250.030.B.5) .
Where it applies: Sites rezoned to PD on the official zoning map; verify parcel rezoning status with the City (the PD’s detailed standards live in the approved Comprehensive Plan for that site) (§ 17.250.030) .
Practical guidance: Expect a site-specific development standards package; do not assume base-district setbacks, FAR, or uses apply unchanged — the Comprehensive Plan controls for that PD site (§ 17.250.030.B.3) .

Housing Overlay — H (17.250.035)

Purpose: Implements sites identified in the City’s Housing Element as candidates to meet RHNA and to encourage housing on targeted parcels (§ 17.250.035.A) .
Typical permitted uses: Residential development; the overlay’s rules are additional to the WMC and prevail in conflict (§ 17.250.035.B) .
Key standards:
- Minimum residential density for new residential development on lots with the H overlay: 30 dwelling units per net acre (minimum) (§ 17.250.035.B.1.a) .
- Projects may apply for density bonus under California Government Code 65915 where applicable (§ 17.250.035.B.1.b) .
Where it applies: Parcels designated with the Housing (H) overlay in the City’s zoning map/Housing Element inventory — verify parcel-level designation with the City planning map (§ 17.250.035) .
Practical guidance: On an H parcel, residential proposals must meet the minimum 30 du/net acre threshold; consult the City on how net-acre is calculated and whether base-zone standards (setbacks, open space) are modified.

Parking Overlay — P (17.250.025)

Purpose: Allows a residentially zoned lot designated P to be used exclusively for off-street parking to serve a nearby principal use, subject to conditions (§ 17.250.025.A–B) .
Typical permitted uses: Off-street parking facility serving a principal use within 100 feet of the lot boundary when applied to residentially zoned plots; underlying zone uses are replaced for that lot by the parking use where the overlay is applied (§ 17.250.025.B.1) .
Key standards/conditions (high-level; see code for detail):
- The principal use served must be within 100 ft of the lot’s outer boundaries (§ 17.250.025.B.1) .
- A lot may only be designated P if vehicular/pedestrian access is limited or conveyed to the City or otherwise controlled to ensure safe flow and to avoid increased traffic impacts on abutting residential streets (code contains more conditions) (§ 17.250.025, subsections) .
Where it applies: Residential lots shown with the P suffix on the official zoning map. Verify both overlay designation and access constraints with the City planning division.
Practical guidance: If you plan to convert a residential lot to parking under P, expect review focused on access, proximity to the served use, and neighborhood traffic impacts; detailed operational standards are in the overlay text.

Little Saigon Overlay — LS (17.250.020)

Purpose: Provides design standards and guidelines for the Little Saigon district; the ordinance directs applicants to the City’s Design Guidelines Manual (Section 7.0) for the detailed standards (§ 17.250.020) .
Typical permitted uses: Base-district uses apply unless the overlay text or design manual modifies them; the overlay is primarily design- and place-based.
Key notes: The ordinance refers to design standards in the separate Design Guidelines Manual rather than repeating them in the code (§ 17.250.020) .
Where it applies: Parcels in the Little Saigon overlay designated on the zoning map. Design review is commonly required; consult the Design Guidelines Manual and the City for application-specific requirements.
Practical guidance: For projects in LS, expect design review emphasizing cultural context and streetfront treatments; obtain the Design Guidelines Manual (Section 7.0) from the City for specifics.

Civic Center Overlay — CV (17.250.015)

Purpose: Guides development in the Civic Center area with district-specific design guidelines; applicants are referred to Section 8.0 of the City’s Design Guidelines Manual (§ 17.250.015) .
Typical permitted uses: Civic/public uses as described in the manual and the base zone; the overlay is design-focused.
Key notes: Design guidelines live in the separate manual and control design expectations for the Civic Center overlay (§ 17.250.015) .
Where it applies: City-owned/public lands and other parcels defined as Civic Center on the zoning map. Confirm parcel-level designation with the City.

Emergency Shelter Overlay — ES (17.250.018)

Purpose: Identifies manufacturing/industrial sites where emergency shelters are appropriate due to size/location (§ 17.250.018.A) .
Allowed uses:
- Emergency Shelter Facility (as defined in Article 7 and complying with § 17.400.053 and other applicable provisions) is permitted within the ES overlay (§ 17.250.018.B.1) .
- Uses permitted in the M2 (Medium Industrial) base district are allowed as well (§ 17.250.018.B.2) .
Key requirements for establishing ES on a parcel:
- Parcel must have underlying M2 zoning (parcels partly in B‑1 are counted as whole M2 for this purpose) (§ 17.250.018.C.1) .
- No parcel within ES may abut property zoned for residential use (abutting residential use disqualifies the parcel) (§ 17.250.018.C.2) .
Where it applies: Parcels in M2 shown with the ES suffix; confirm parcel status with the City.
Practical guidance: ES overlay creates a narrow, parcel-specific eligibility test — if a site abuts residential zoning it cannot be designated ES; applicants proposing shelters must show compliance with the M2/ES requirements and the emergency-shelter-specific code referenced in § 17.400.053 (see the WMC).

Specific Plan — SP (17.240.030)

Purpose and use as overlay: The SP district (Specific Plan) can replace or overlay the underlying zoning and contains its own tailored development standards; the ordinance directs users to the individual specific plan documents for applicable standards (§ 17.240.030) .
Practical guidance: When property is within an SP area, the specific plan document is the primary source for permitted uses and dimensional standards; check the specific plan text and map.

Quick reference table — key overlay rules and where to read them

Overlay	What it controls / typical rule	Code reference
PD (Planned Development)	Site-specific permitted uses; min site 0.5 acre; comprehensive plan required; height limited to street width; utilities underground	§ 17.250.030
H (Housing)	Minimum 30 dwelling units per net acre; density bonus per Gov. Code 65915 allowed	§ 17.250.035
P (Parking)	Residential lot may be used exclusively for off‑street parking serving a use within 100 ft; access/traffic controls required	§ 17.250.025
LS (Little Saigon)	Design and streetscape standards; see City Design Guidelines Manual (Section 7.0)	§ 17.250.020
CV (Civic Center)	Civic Center design standards — see Design Guidelines Manual (Section 8.0)	§ 17.250.015
ES (Emergency Shelter)	Allows Emergency Shelter Facilities on qualifying M2 parcels that do not abut residential zoning	§ 17.250.018
SP (Specific Plan)	Specific plan document sets customized standards; may replace or overlay base zoning	§ 17.240.030

Checklist (what an applicant must confirm / provide)

Confirm parcel overlay and base zone on the official zoning map (overlay suffixes appended to base zone) (§ 17.250.010) .
For PD: prepare and submit the Comprehensive Plan required by Chapter 17.560; show site is ≥ 0.5 acre; include utility undergrounding and street-width height analysis (§ 17.250.030) .
For H: demonstrate project meets the minimum 30 du/net acre requirement or document density-bonus eligibility under Gov. Code 65915 (§ 17.250.035) .
For P: show the principal use is within 100 ft; provide design for controlled access/traffic mitigation and prove it meets the overlay’s access conditions (§ 17.250.025) .
For ES: verify parcel is zoned M2 and does not abut residential zoning; prepare evidence of compliance with § 17.400.053 (Emergency Shelters) if proposing a shelter (§ 17.250.018) .
If in LS or CV overlays: obtain and follow the applicable sections of the City Design Guidelines Manual (Section 7.0 or 8.0) and prepare materials for design review (§ 17.250.020, § 17.250.015) .
Verify compliance with related development rules (setbacks, landscaping, parking) in Article 3 — see Development Standards and parking chapters (e.g., setback rules § 17.300.020) .
For ADUs: check ADU-specific rules even if overlay exists — ADUs are addressed in the ADU chapter and the City’s ADU page (see § references in the mixed-use tables where ADUs are listed) .
Where the code refers to external manuals (Design Guidelines), obtain the manual and confirm which document version applies; verify if projects require additional discretionary approvals (e.g., CUP, AUP) per the base zoning tables.

Risks & Ambiguities

Issue	Why it matters	What to verify
Overlay map interpretation (suffix placement)	The overlay applies only where mapped; misreading the map could lead to wrong assumptions about allowable uses	Verify parcel suffix on the official zoning map with Planning Division (§ 17.250.010)
PD permitted uses and standards are site-specific	The PD ordinance defers to the Council-approved Comprehensive Plan — you cannot assume base-zone standards apply	Request the PD Comprehensive Plan and Council-approved conditions for the specific PD district (§ 17.250.030.B.3)
Design standards referenced outside the code (LS, CV)	Design Manuals (Sections 7.0/8.0) are not printed in the code; required design elements may not be obvious from code text	Obtain the relevant Design Guidelines Manual and confirm which provisions are mandatory vs. advisory (§ 17.250.020, § 17.250.015)
P Overlay access conditions	The P overlay requires access be limited or conveyed to the City; implementation may require easements or agreements	Confirm whether an access easement or dedication is required and whether City acceptance is needed (§ 17.250.025)
ES overlay adjacency test	Any adjacency to residential zoning disqualifies a parcel for ES; parcels that straddle zones are treated specially	Verify underlying zoning and adjacency rules; check how parcels partly in B‑1 are treated when establishing ES (see § 17.250.018.C.1)
Conflicting standards (overlay vs. Article 3)	The code states overlay chapter governs conflicts, but Article 3 often contains detailed quantitative rules (setbacks, parking)	Identify all applicable overlay paragraphs and cross-check Article 3 standards; where uncertain, request an official interpretation (§ 17.250.010, § 17.300.020, § 17.120.015)

Plain-English Summary

Overlays in Westminster are map-based “add-ons” to the regular zone that change or add rules for specific places (for example, PD for site-specific master plans, H to encourage higher housing density, P to allow parking-only lots, LS/CV to require special design, and ES to permit shelters on qualifying industrial parcels). Always check the official zoning map, the specific overlay section (Chapter 17.250), and any referenced design or comprehensive-plan documents because overlays are often parcel- and plan-specific (§ 17.250.005, § 17.250.010) .

Information Gaps

The specific parcel-level zoning map (which parcels currently carry PD, H, LS, CV, P, ES, or SP suffixes) — Not found in retrieved materials; verify with City planning maps.
Full text of the Design Guidelines Manual (Sections 7.0 and 8.0) referenced by LS and CV overlays — the ordinance points to these manuals but the manuals themselves were not included in the retrieved materials (§ 17.250.020, § 17.250.015) .
The complete operational/technical standards for the P overlay (e.g., parking stall counts, lighting, hours of operation) — the ordinance includes some high-level controls but the full operational rules are not contained in the retrieved fragments; check the full § 17.250.025 text and related chapters. .
Any recent administrative interpretations or PD Comprehensive Plans that modify code text for specific sites — Not found in retrieved materials; verify with Planning Division or the Director’s formal interpretations (§ 17.120.015) .

Source References

§ 17.250.005 — Purpose, Overlay Zones (Chapter purpose) .
§ 17.250.010 — Applicability; overlay suffix mapping and conflict rule (overlay governs) .
§ 17.250.015 — Civic Center (CV) Overlay; refers to Design Guidelines Manual Section 8.0 .
§ 17.250.018 — Emergency Shelter (ES) Overlay; allowed uses and establishment requirements (M2 underlying, no abutting residential) .
§ 17.250.020 — Little Saigon (LS) Overlay; refers to Design Guidelines Manual Section 7.0 .
§ 17.250.025 — Parking (P) Overlay; off-street parking use rules and access conditions .
§ 17.250.030 — Planned Development (PD) Overlay; min site 0.5 acre, comprehensive plan requirement, height/utility rules .
§ 17.250.035 — Housing (H) Overlay; 30 du/net acre minimum and density bonus reference (Gov. Code 65915) .
§ 17.240.030 — Specific Plan (SP) district may replace or overlay the underlying zone; specific plan documents set standards .
Development standards and setbacks references: § 17.300.020 (Setback Regulations) — general development-standard cross-references .
Zoning districts table and base-zone context: § 17.200.010 (Zoning districts established, Table 2‑1) .
(These citations reference the Westminster Zoning Code excerpts provided in the materials reviewed.)

Sources

Retrieved passages

Westminster Zoning Code (§ 2) High relevance
Westminster Zoning Code (§ 2) High relevance
Westminster Zoning Code (§ 2) High relevance
Westminster Zoning Code (Title shall) High relevance
Westminster Zoning Code (§ 17.240.030.) Medium relevance
Westminster Zoning Code (Title in) Medium relevance
Westminster Zoning Code (§ 6) Medium relevance
Westminster Zoning Code (Section shall) Medium relevance

Cited sections

Official Westminster code library

Frequently asked questions

What overlays exist in Westminster and where are they defined?

The overlay zones are set out in Chapter 17.250 of the Westminster Zoning Code and include, among others, PD (Planned Development), H (Housing), P (Parking), LS (Little Saigon), CV (Civic Center), and ES (Emergency Shelter); the chapter explains overlay applicability and that overlays are appended as suffixes to base zones on the zoning map (§ 17.250.005, § 17.250.010) .

What can I build in a PD overlay in Westminster?

A PD overlay is site-specific: permitted uses and detailed standards are established by the City Council when the site is rezoned to PD and through approval of a Comprehensive Plan for that PD site. The PD overlay does require a minimum site area of 0.5 acre and includes specific constraints such as height limited to the width of the street and undergrounding utilities (§ 17.250.030) .

Is there a minimum density in any Westminster overlay?

Yes. Lots with the H (Housing) overlay must provide a minimum residential density of 30 dwelling units per net acre for new residential development; applicants may pursue a density bonus per Government Code 65915 (§ 17.250.035) .

Can a residential lot be converted to a parking lot under an overlay?

Yes—if a residential lot is mapped with the P overlay it may be used exclusively for off-street parking serving a principal use located within 100 feet of the lot boundaries, subject to access and traffic-control requirements in the overlay (§ 17.250.025) .

Do Little Saigon and Civic Center overlays change uses or only design?

The LS and CV overlays are primarily design- and place-based. The code refers applicants to the City’s Design Guidelines Manual (Sections 7.0 and 8.0) for the applicable design standards; permitted uses generally follow the underlying base zone unless modified by overlay-specific direction in the manual or code (§ 17.250.020, § 17.250.015) .

Can emergency shelters be placed anywhere in Westminster under the ES overlay?

No. The ES overlay applies only to parcels in the M2 (Medium Industrial) zoning district that do not abut residentially zoned parcels. Where a parcel meets those criteria it may host an Emergency Shelter Facility in compliance with § 17.400.053 and other WMC provisions (§ 17.250.018) .

If overlay rules conflict with base zone rules, which controls?

The overlay chapter states its provisions apply in addition to other Title requirements and that, in the event of any perceived conflict between this Chapter and other Title provisions, the overlay chapter shall govern (§ 17.250.010) .

Do overlays remove the need to meet setback or parking standards?

No. Overlays add or modify rules but do not automatically waive Article 3 standards; applicants must check overlay text and Article 3 (setbacks § 17.300.020, parking Chapter 17.320) to determine which rules apply or whether the overlay supersedes a specific standard (§ 17.250.010, § 17.300.020) .

How do I confirm whether my parcel is in an overlay?

Verify the parcel’s zoning map symbol (overlay suffixes appended to the base zone) with the City’s official zoning map and ask Planning staff for confirmation; the code explicitly states the overlay designation is shown as a suffix on the zoning map (§ 17.250.010) .

If my project is in a PD, who sets the development standards?

The City Council establishes permitted uses and development standards for each PD site via rezoning and approval of the PD Comprehensive Plan. Always obtain the PD-specific Comprehensive Plan and any associated conditions for the parcel (§ 17.250.030) .

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