Glendora — Historic Preservation

Last reviewed: July 2, 2026

Overview

Glendora's historic preservation rules live in Title 21 of the Municipal Code. The ordinance establishes a city-wide historic preservation program (definitions, duties, designation standards, and review procedures) under § 21.03.050 and creates the Historic Preservation Overlay Zone (HPOZ) controls under § 21.07.060. Key themes: property-by-property landmark/resource designation, district-based HPOZ designation with a required inventory and petition, and permit-level review (certificates of appropriateness / landmark/resource permit procedures) before exterior-altering work or demolition is allowed. § 21.03.050 and § 21.07.060 set the controlling rules.

(Notes: mentions of design review, development standards, and parking are linked to Glendora menu pages where those parallel rules live. For building-code technical standards see the California Building Standards Code link.)

What the code actually requires (deep, ordinance-grounded detail)

• The city's historic-preservation program purpose and the planning director's powers are codified at § 21.03.050 (purpose; planning director duties including surveys, register maintenance, guidelines, review of permits, and recommendations).

• The HPOZ (Historic Preservation Overlay Zone) is defined and regulated at § 21.07.060: designation criteria, required application contents (statement of significance, inventory of contributing/noncontributing resources, period of significance, map, photos, and a petition signed by owners of at least 51% of properties), notice and hearing procedures, certificate-of-appropriateness requirements for contributing resources, and limits on demolition (council-level approval and hardship showing for demolition of contributing resources).

• Two distinct, binding designations exist:

  • Historic resource — a cultural resource designated by resolution of the planning commission; triggers commission review of exterior changes and permit issuance requirements. (Definition and effect referenced throughout Title 21.)
  • Landmark — a cultural resource designated by resolution of the city council; similarly triggers planning commission review for exterior changes and expressly prohibits demolition/relocation outside city boundaries without council approval.

• Permits affecting the exterior of landmarks or historic resources must be referred to the commission; the commission (or the planning commission in HPOZ cases) issues decisions within statutory timelines (commonly 30 or 90 days depending on the procedure) and the decisions may be appealed. The building official must refer exterior-impacting permit applications to the department for referral to the commission. § 21.03.050 and § 21.07.060 spell out referral, timelines and appeals.

• Ordinary maintenance and repair that do not change design, material, or external appearance are exempt; emergency work for public safety is allowed when the building official certifies the need or under the California Historical Building Code where applicable. Property owners also have a duty to keep preserved features in good repair. These rules appear in both the landmark/resource permit procedures and the HPOZ permit provisions.

• The ordinance authorizes a grace period of up to six (6) months before issuing demolition permits for preserved features to allow salvaging, documentation, or relocation efforts; demolition of contributing resources in an HPOZ generally requires a showing of economic hardship and council approval.

• The planning director must maintain a register of historic resources and landmarks, adopt review guidelines (the city references a Historic Preservation Development Handbook for HPOZ review standards), and conduct/update citywide surveys.

• Appeal windows and notice: typical notice by first-class mail at least 10 days before hearings; planning commission or council hearings required within 60 days of department report for designations; appeals from planning commission decisions to city council must be filed within 15 days of the commission decision for many matters. Specific timing language appears in the ordinance subsections cited below.

• Enforcement: failure to obtain required permits / approvals can be prosecuted as a misdemeanor under the Municipal Code.

Hyperlinks (first natural mention of each topic):

• design review: see Glendora's Glendora Design Review procedures for parallel review processes;
• development standards / setbacks: the HPOZ can recommend alternative standards but underlying Glendora Development Standards still apply unless modified by commission/council;
• overlay districts: the code implements HPOZ as an overlay—see Glendora Overlay Districts;
• parking: preservation projects must still satisfy Glendora Parking rules where the ordinance or specific plan requires it;
• ADUs: HPOZ/landmark rules do not waive ADU law—see Glendora ADUs and state ADU law California ADU law;
• California Building Standards Code / Title 24: where safety work is required the code and the California Building Standards Code and the California Historical Building Code may apply.

District-by-district breakdown (how preservation interacts with districts)

Historic Preservation Overlay Zone (HPOZ)

• Purpose: promote identification/protection of areas of historic/architectural/cultural significance. (HPOZ is defined and governed in § 21.07.060.)
• Typical permitted uses: underlying zone uses continue; HPOZ is an overlay that regulates exterior alterations, demolition and new construction through certificate-of-appropriateness requirements. (See § 21.07.060(F).)
• Key standards/procedures (decision-relevant):
  • Designation requires an application including a statement of significance, period of significance, inventory (list of contributing & noncontributing resources), photographs, map, and petition signed by owners of 51% of properties in the proposed area. (§ 21.07.060(D).)
  • After designation, exterior alterations to contributing resources require a certificate of appropriateness; applications must include photos, construction drawings and materials and are reviewed using standards in the Glendora Historic Preservation Development Handbook. Commission decision timelines are set in the ordinance (30 days for COA decisions in many cases). (§ 21.07.060(F).)
  • Demolition of contributing resources: council approval required and demolition generally needs an economic hardship showing; the commission may impose a six‑month grace period for salvage/documentation. (§ 21.07.060(F) & related demolition subsections.)
• Where it applies: any geographically definable area designated by commission/council after the required study, petition and public hearings. (§ 21.07.060(D).)

T-5, Village Core (historic character overlay within a specific plan context)

• Purpose: the Village Core is the city's oldest commercial district with many early-1900s buildings; the specific-plan standards are crafted to preserve village scale and historic character. The T-5 standards encourage preservation-sensitive infill. (Village/T-5 guidance appears in the Village on the Green / specific plan materials and development standards; see the specific plan and Title 21 text.)
• Typical permitted uses: mixed commercial, retail, and upper‑story residential consistent with the Village character; historic buildings within T-5 remain subject to historic preservation rules when designated as landmarks or within an HPOZ.
• Key dimensional standards: building placement and form guidance (e.g., front setbacks, height caps) are in the specific plan text and Appendix (see Section 21.09.040 and referenced appendices). For preservation projects, the HPOZ/commission may recommend alternative standards if appropriate.

Underlying residential zones commonly affected by preservation controls (overview)

• Examples: R-1 (7,500), R-2, R-3, E-series estate zones. The zoning map determines underlying uses/dimensional rules; when a property in any of these zones is designated a landmark or included in an HPOZ the preservation review overlays the underlying standards regarding exterior work. (Zoning district list appears in § 21.03 / Title 21.)

(If you need a property-specific check: confirm the property's underlying zone on the official zoning map and whether an HPOZ boundary or landmark designation applies. Verify with the Planning Department. Verify with the city if any specific plan or overlay modifies standards for that parcel.)

Quick decision‑relevant standards table

Checklist (what an applicant must satisfy for a designation or exterior work affecting a preserved feature)

• Determine whether property is listed as a Landmark or Historic resource or lies inside an HPOZ (verify with Planning Department / official zoning map). Verify with the jurisdiction.
• For HPOZ designation: prepare a complete application with statement of significance, defined period of significance, inventory of contributing/noncontributing resources, black-and-white front-elevation photos, boundary map, and a petition signed by owners of 51% of properties. (Required items per application.) § 21.07.060(D)
• For individual landmark/historic resource designation: owner consent if privately owned, planning department study, and commission/council public hearing (council acts by resolution). § 21.03.050(D)
• For exterior-altering permits on preserved features: submit plans, photos, materials samples, and any supplemental documentation required by the department / commission; expect referral of building/demolition permit applications to the commission. § 21.03.050(E)/(F)
• Expect COA or landmark/resource permit review timeline: 30 days (HPOZ COA) or 90 days (landmark/resource permit) after complete application; account for possible appeals (file within 15 days to appeal to council where applicable). § 21.07.060(F) § 21.03.050(E)/(F)
• If proposing demolition/relocation, be prepared for a possible six‑month delay/grace period and the requirement to demonstrate economic hardship for council approval in HPOZ/contributing resource cases. § 21.03.050(E)/(F)
• Confirm whether ordinary maintenance exceptions apply; if work affects exterior appearance, the commission's review will be required. § 21.03.050(G)

Risks & Ambiguities

Plain-English Summary

If your Glendora property is designated a Landmark or Historic resource, or lies inside an HPOZ, exterior work and demolition will usually need planning/commission review (a certificate of appropriateness or landmark/resource permit), with specific notice, hearing, and timeline requirements; routine maintenance that does not change appearance is allowed without review. § 21.03.050 and § 21.07.060 are the controlling rules.

Source References

• Glendora Municipal Code — Historic preservation (purpose, planning director duties, designation findings and procedures): § 21.03.050.
• Glendora Municipal Code — Historic preservation overlay (HPOZ): § 21.07.060 (definitions, HPOZ criteria, designation procedures, COA/permit procedures).
• Definitions of “Historic resource” and “Landmark” (designation effects): Title 21 definitions excerpt.
• HPOZ permit/COA procedures, timelines, demolition grace period and appeals: multiple subsections summarized in Title 21 (see § 21.07.060(F), § 21.03.050(E)/(F)).
• Village/T-5 specific plan and preservation context (Village core historic character guidance): Title 21, Village on the Green / T-5 descriptions and Appendix guidance.

(If you need the exact municipal-code ordinance text or an official map of HPOZ boundaries for a parcel, request the specific ordinance PDF or ask Planning for a parcel-specific determination. Verify with the jurisdiction for parcel‑specific interpretation.)

Retrieved passages

• Glendora Zoning Code High relevance show source text
• Glendora Zoning Code High relevance show source text
• Glendora Zoning Code (section and) High relevance show source text
• Glendora Zoning Code (section in) High relevance show source text
• CBC § 030 (section shall) High relevance show source text
• CBC § 110 (section because) High relevance show source text
• Glendora Zoning Code (§ 1) High relevance show source text
• Glendora Zoning Code (§ 1) Medium relevance show source text

Cited sections

• Glendora Municipal Code — Historic preservation (purpose, planning director duties, designation findings and procedures): **§ 21.03.050**. (§ 21.03.050)
• Glendora Municipal Code — Historic preservation overlay (HPOZ): **§ 21.07.060** (definitions, HPOZ criteria, designation procedures, COA/permit procedures). (§ 21.07.060)
• Definitions of “Historic resource” and “Landmark” (designation effects): Title 21 definitions excerpt. (Title 21)
• HPOZ permit/COA procedures, timelines, demolition grace period and appeals: multiple subsections summarized in Title 21 (see § 21.07.060(F), § 21.03.050(E)/(F)). (Title 21)
• Village/T-5 specific plan and preservation context (Village core historic character guidance): Title 21, Village on the Green / T-5 descriptions and Appendix guidance. (Title 21)
• Glendora_ZoningCode.md

• Official Glendora code library