Gilroy — Overlay Districts

Last reviewed: July 2, 2026

Overview

Gilroy’s overlay and combining districts are special zoning layers that sit on top of the base zoning to add area-specific rules, review triggers, or design policies without wholesale replacement of the base zone. The list of combining/overlay districts is established in § 30.3.20 (the Gilroy Zoning Code, Chapter 30) and includes the PUD, HS, HN, and MA combining districts. § 30.3.20 defines their role: they “modify the basic development requirements” of the underlying zone.

This page explains what the Gilroy ordinance actually requires for each overlay/combining district found in Chapter 30 (what it does, where it applies, what triggers design or planning review), with source citations to the controlling code sections. Follow the links to the city’s broader pages when the topic intersects other processes: the Gilroy zoning & planning overview and the specific Gilroy Zoning menu entries. I also link to related topic pages where they’re relevant (design review, parking, development standards, historic preservation, ADUs, and the California building code) at their first natural mention below.

How to read this page

• Every code requirement shown below is grounded in the City of Gilroy Zoning Code (Chapter 30) and cites the exact controlling §.
• Where the ordinance references an external policy (for example, the Murray‑Las Animas design policy), that policy itself was not included in the retrieved materials; I’ve marked those gaps.
• For permit-level procedures like architectural & site review see Gilroy Design Review and for off-street parking minimums see Gilroy Parking. Consult Gilroy Development Standards for dimensional tables and the California Building Standards Code for building-code compliance.

District-by-district breakdown

Note: the overlay/combining districts discussed below are identified and authorized in § 30.3.20.

Murray‑Las Animas Avenue Overlay Combining District (MA)

• Purpose: Apply an area-specific design policy and an extra public noticing/review step for architectural and site review projects in the defined area. § 30.20.40 sets the district boundaries and the procedural requirements.
• Where it applies: All parcels “bounded by Leavesley Avenue to the south, SR‑101 to the east, Cohansey Avenue to the north and Monterey Road to the west.” § 30.20.40.
• Typical permitted uses: Uses remain those of the base zoning; the overlay adds process and design policy requirements but does not list new independent uses. See § 30.20.40 (MA) and the base district use tables referenced therein.
• Key effects / dimensional standards: MA is procedural and design-focused — it does not itself replace setback/FAR/height numbers. Instead:
  • Projects requiring architectural & site review within the MA area require the Planning Commission to hold a public meeting and to notice property owners/residents in the overlay area; public noticing costs are borne by the applicant. § 30.20.40.
  • The Planning Commission reviews such applications under the standards in § 30.50.40 and the Murray‑Las Animas overlay combining district design policy. § 30.20.40. The overlay design policy text is referenced but not reproduced in the retrieved materials.
  • Applicant appeal window to City Council: 20 days from the Planning Commission decision. § 30.20.40.
• Practical guidance: If your parcel lies inside the MA boundary, expect additional public noticing and an extra design policy to be applied at architectural/site review. Confirm exact parcel inclusion on the official zoning map per § 30.3.40.

Planned Unit Development Combining District (PUD)

• Purpose: Allow unified, flexible design and deviations from base-zone standards when a site is planned and developed as a whole to achieve superior design/amenities. See § 30.26.10 (statement of intent).
• Where it applies / how established: A PUD overlay is applied by zone change and PUD design approval is processed concurrently or after establishment of the overlay. See § 30.26.50 and § 30.26.50(b).
• Typical permitted uses: At least 75% of the PUD land area must be used for uses permitted by the base zoning; up to 25% may be different uses approved with the PUD. § 30.26.20.
• Key dimensional/approval effects:
  • Lot, yard, height, and other standards may be varied as part of an approved PUD; those deviations are specified only in the approved PUD plans. § 30.26.30 (site/building requirements) and § 30.26.10 (intent).
  • A building permit for parcels inside a PUD overlay cannot be issued until the Planning Commission and City Council have approved the PUD per § 30.50.50 and § 30.26.50(a).
  • Minor modifications after occupancy may be approved administratively if they meet the underlying zoning and planning director’s determination per § 30.26.50(b).
• Practical guidance: Expect a zone-change process, design review, master plans and PUD-specific conditions (landscape, parking, open space). PUD approvals create the “approved standards” that supersede base-zone numeric standards only to the extent spelled out in the PUD approval. See Gilroy Development Standards for tables you’ll likely reference during PUD design.

Historic Site Combining District (HS) and Historic Neighborhood Combining District (HN)

• Purpose: Preserve and regulate the character of individually significant historic sites (HS) and contiguous historic neighborhoods (HN). See § 30.27.10 (statement of intent).
• Where it applies / how established: Establishment or removal of an HS or HN is processed as a zone change; the Historic Heritage Committee reviews designation requests and forwards recommendations to Planning Commission and City Council. § 30.27.30 and § 30.49.30–.32.
• Typical permitted uses: All uses permitted in the base district are permitted. Conditional uses listed in the base district may be allowed only if the Planning Commission makes specified findings of compatibility and minimal alteration to historic significance. § 30.27.20.
• Key effects / design triggers:
  • Exterior alterations and many types of new construction or relocations inside HS/HN require architectural and site review under § 30.50.40 (see the Historic rules in § 30.27.40–30.27.50 for exact triggers). Examples: in an HN, remodeling that affects 50% or more of a façade triggers review. § 30.27.40(a)(4).
  • Demolition of historically significant structures triggers the Historic Heritage Committee review and a multi-step demolition approval process; removal of a historic site designation may be required before demolition of a designated historic structure. § 30.27.50–30.27.52.
  • The Historic Heritage Committee maintains a local register and advises on designation, review, and demolition. § 30.49.30–.32.
• Practical guidance: If your property is in an HS or HN overlay, expect mandatory architectural/site review for most exterior changes, special demolition procedures, and potential fee waivers for designation (designation fee waiver is provided for establishment, not removal). Confirm the property’s overlay status on the official zoning map § 30.3.40.

Quick reference table (most decision-relevant items)

Checklist

• Confirm whether your parcel is inside any combining/overlay district on the official zoning map per § 30.3.40.
• If inside MA, budget for applicant‑paid public noticing and plan for a Planning Commission public meeting for architectural & site review; review triggers in § 30.20.40.
• If proposing a PUD, prepare for a zone change/PUD approval package that outlines any requested deviations; check § 30.26.20–.50 and § 30.50.50 for application/approval rules.
• If property is in an HS or HN, identify whether your work will trigger architectural & site review (examples in § 30.27.40) and the Historic Heritage Committee review/demolition procedures (§ 30.27.50–.52).
• Prepare to meet any PUD or overlay conditions that reference the city’s development standards, parking rules, and landscape standards — consult Gilroy Development Standards, Gilroy Parking, and Gilroy Landscaping and Screening.
• If work requires building permits, ensure building‑code compliance with the California Building Standards Code (Title 24) in addition to overlay requirements. (Code reference for planning requirements: Chapter 30 of the Gilroy Zoning Code.)
• For items that the overlay references but does not include (e.g., the Murray‑Las Animas overlay design policy), request that policy from the Planning Division and verify which version is applied. Not found in retrieved materials.

Risks & Ambiguities

Plain-English Summary

Gilroy’s overlays (called “combining districts” in Chapter 30) do not typically create brand‑new land uses — they layer extra rules or review steps onto the base zoning: MA adds public noticing and a local design policy for a bounded area (Leavesley–SR‑101–Cohansey–Monterey), PUD lets developers get site‑wide deviations when they get a PUD approval, and HS/HN protect historic sites/neighborhoods by requiring architectural/site review and special demolition procedures. All are authorized in § 30.3.20 and the individual district articles cited above.

Source References

• Gilroy Zoning Code (Chapter 30) — designation of combining districts: § 30.3.20.
• Murray‑Las Animas Avenue Overlay Combining District: § 30.20.40.
• Planned Unit Development (PUD) Combining District: § 30.26.10 – § 30.26.50 and development approval rules § 30.50.50.
• Historic Site and Historic Neighborhood Combining Districts (Article XXVII): § 30.27.10 – § 30.27.53; Historic Heritage Committee roles: § 30.49.30–.32.
• Zoning map and boundary interpretation rules: § 30.3.40, § 30.3.50.
• Architectural & Site Review and related permit procedures: § 30.50.40 and related subsections (§ 30.50.45–.50).

If you want, I can:

• Pull the exact map extents for a specific parcel to confirm whether it sits in MA, HS or HN (Verify with the jurisdiction for official map determinations), or
• Retrieve the Murray‑Las Animas overlay combining district design policy (not included in the supplied materials) and summarize its design standards.

Retrieved passages

• Gilroy Zoning Code (section 30.23.20.) Medium relevance show source text
• Gilroy Zoning Code (Article 26) Medium relevance show source text
• Gilroy Zoning Code Medium relevance show source text
• Gilroy Zoning Code (Article 09) Medium relevance show source text
• Gilroy Zoning Code (§ 2) Medium relevance show source text
• Gilroy Zoning Code (Article XXXI) Medium relevance show source text
• Gilroy Zoning Code (Article 03) Medium relevance show source text
• Gilroy Zoning Code (§ 2) Medium relevance show source text
• Gilroy Zoning Code (section 30.50.50.) High relevance show source text
• Gilroy Zoning Code (ARTICLE XXVII.) Medium relevance show source text
• Gilroy Zoning Code (section 30.50.40.) Medium relevance show source text
• Gilroy Zoning Code (§ 2) Medium relevance show source text
• Gilroy Zoning Code (section 30.50.50) Medium relevance show source text

Cited sections

• Gilroy Zoning Code (Chapter 30) — designation of combining districts: **§ 30.3.20**. (Chapter 30)
• Murray‑Las Animas Avenue Overlay Combining District: **§ 30.20.40**. (§ 30.20.40)
• Planned Unit Development (PUD) Combining District: **§ 30.26.10 – § 30.26.50** and development approval rules **§ 30.50.50**. (§ 30.26.10)
• Historic Site and Historic Neighborhood Combining Districts (Article XXVII): **§ 30.27.10 – § 30.27.53**; Historic Heritage Committee roles: **§ 30.49.30–.32**. (Article XXVII)
• Zoning map and boundary interpretation rules: **§ 30.3.40**, **§ 30.3.50**. (§ 30.3.40)
• Architectural & Site Review and related permit procedures: **§ 30.50.40** and related subsections (**§ 30.50.45–.50**). (§ 30.50.40)
• Pull the exact map extents for a specific parcel to confirm whether it sits in **MA**, **HS** or **HN** (Verify with the jurisdiction for official map determinations), or
• Retrieve the Murray‑Las Animas overlay combining district design policy (not included in the supplied materials) and summarize its design standards.
• Gilroy_ZoningCode.md

• Official Gilroy code library