Local zoning · Glendora

Glendora — Zoning

Q: What can I build on an R-1 lot in Glendora?

You can build uses allowed in the R‑1 single‑family zone such as detached single‑family dwellings, accessory buildings and accessory dwelling units (subject to separate ADU rules). Exact lot-area, setback and height limits are in Appendix 21.A (Table A) referenced by § 21.01.040 and the single‑family standards in § 21.04.020 . Verify the parcel’s zone and the Appendix numbers with the Planning Department.

Zoning under the Glendora local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page summarizes what Glendora's local zoning ordinance (Title 21 of the Municipal Code) actually says about zoning: the official zone classifications, how the official zoning map works, the city's special and overlay zones, and the Route 66 specific-plan subdistricts with their key development controls. It is grounded in the Glendora Municipal Code excerpts provided below and points you to the statute numbers you’ll need for permit checks and project scoping. See parking, development standards, and design review for related rules that interact with zoning decisions.

How the ordinance is organized (short)

The zoning ordinance is Title 21 of the Glendora Municipal Code; the basic purpose and administration are in § 21.01.010 and related administration sections.
Zone classifications (the list of district labels used in Glendora) are codified at § 21.01.040.
The official zoning map showing which parcel is in which zone is part of the title and is kept on file at the Planning Department; boundary rules and how to interpret the map are stated in the same chapter. § 21.01.040 explains the map and boundary rules.
Development standards (setbacks, lot sizes, heights, FAR, lot coverage) are set by zone via tables in Appendix 21.A or by specific plan tables such as Table 6‑2 in the Route 66 specific plan; see § 21.04.020, § 21.05.030, § 21.10.350, and related sections.

Note: For plan-level or site-specific design rules consult the city's design review procedures; see the design review guidance for how discretionary standards are applied. See Glendora Design Review. (/us/california/glendora/design-review)

Official map, boundaries, and amendments

The ordinance makes the official zoning map part of Title 21 and requires it be maintained on file in the Planning Department; where boundaries follow streets, the centerline governs; where lines are approximate they are construed as property lines; if a right‑of‑way is vacated the zone extends to the centerline; and the Director resolves any boundary uncertainty. See § 21.01.040(C–D).
Zoning map amendments (zone changes) require the procedures under § 21.01.050 (application, public hearing, commission and council action).

Practical note: Verify the official map in the Planning Department for parcel‑level questions; when boundaries are unclear the Director has the authority to determine the exact boundary. Verify with the jurisdiction.

District-by-district breakdown

Below are the districts named in Glendora's ordinance. For most numeric development standards the code points you to Appendix 21.A tables (Table A, B, C, D, etc.); specific-plan subdistricts carry their own tables where noted.

(Links in the text below: when you see references to development standards, parking, overlays or ADUs those phrases are linked to the city's topic pages for easy navigation — use those pages for the procedural / technical details that sit alongside zoning.)

Single‑Family Residential: R-1 (7,500) (and E‑series: E-3, E-4, E-5, E-6, E-7) and RHR

Purpose: preserve single‑family neighborhoods and implement lot-size-based standards. § 21.01.040 lists these zones.
Typical permitted uses: detached single‑family dwellings, accessory buildings, accessory dwelling units (see ADU rules), home occupations subject to local rules. See the single‑family development standards table in Appendix 21.A. § 21.01.040; accessory standards referenced in § 21.04.020.
Key dimensional controls (where shown in code): minimum lot sizes, minimum lot widths, setbacks and height caps are specified in Appendix 21.A (Table A); example front/rear/side minima are enforced per the Appendix and across chapters. Verify the exact lot-specific numbers in Table A. See development standards. (/us/california/glendora/development-standards)

Multiple‑Family Residential: R-2, R-3, GA, LGA

Purpose: medium-to-higher density housing and multi-family development. § 21.04.020.
Typical permitted uses: multifamily dwellings (subject to development plan review), some single‑family uses allowed under R‑1 standards, supportive/transitional housing. § 21.04.020(B–D).
Key dimensional controls: lot area per unit, heights, setbacks and open space requirements are set in Appendix 21.A Table B. Development plan review required under § 21.02.040.

Commercial zones: C-1, C-2, C-3, CM, MS

Purpose: range from professional/office to full retail/service to commercial/manufacturing and medical campus. § 21.01.040 and the commercial-specific tables.
Typical permitted uses: vary by zone and are listed in the Appendix tables; restaurant, retail, office, service, medical uses appear in C‑zones (some uses require CUP). See Appendix Table C and use tables. See Glendora Land Use. (/us/california/glendora/land-use)

Industrial/manufacturing: M-1, M-1A, IP

Purpose: accommodate light/manufacturing and industrial park development with controls to reduce community impacts. § 21.05.030.
Permitted uses & permits: uses by right and conditional uses are specified in Table C (Appendix 21.A). Development standards (min lot area, setbacks, lot coverage, height) are in Table D (Appendix 21.A); refuse screening and design standards are explicitly called out in § 21.05.030(D–E).

Special use zones: B (Cemetery), PR (Planned Redevelopment), PD (Planned Development), R‑4 (Railroad), OSN (Open Space — Natural), SP (Specific Plan), CCAP (Civic Center Area Plan)

Purpose & uses: each special zone has purpose and permitted uses spelled out in Chapter 21.06 (e.g., § 21.06.010 for Cemetery zone, § 21.06.020 for PR, § 21.06.030 for PD, § 21.06.040 for R‑4, § 21.06.050 for OSN).
Key controls: the code lists individual development standards (setbacks, heights) for special zones (for example the Cemetery zone minimum setback 25 ft., max height 35 ft. in § 21.06.010(C)). Planned or specific plan zones require council-set development requirements and are often reviewed via development agreements or specific-plan procedures.

Overlay zones: H (Height), MHP (Mobilehome park overlay), HPOZ (Historic preservation overlay), and the Grand‑Foothill multifamily overlay

Purpose: overlays add rules on top of base zones (height limits, preservation rules, special mobilehome standards). Overlays are listed within § 21.01.040 and are applied where designated on the official map. See Glendora Overlay Districts. (/us/california/glendora/overlay-districts)

Route 66 Corridor specific‑plan subdistricts (special zoning subdistricts inside the Route 66 Specific Plan)

Glendora's Route 66 specific plan establishes its own list of land‑use subdistricts with their own permitted uses and standards. The plan and its implementing ordinance make these subdistricts the operative zoning within the plan area; where the specific‑plan standard applies it takes precedence over Title 21. See § 21.10.030, § 21.10.320, and the development standards tables § 21.10.350 (Table 6‑2) and § 21.10.420 (lot consolidation/FAR bonuses Table 6‑6).

List of Route 66 subdistricts (examples and where to find them in the code):

BG (Barranca Gateway) — pedestrian- and student-oriented mixed use; encouraged uses include mixed‑use, retail, restaurants; see § 21.10.320(A).
GCG (Grand Avenue Commercial Gateway) — higher intensity commercial; see § 21.10.320(B).
TCMU (Town Center Mixed Use) — pedestrian/transit-focused mixed use; see § 21.10.030(C).
GLG (Glendora Avenue Gateway), RSC (Route 66 Service Commercial), CRR (Central Route 66 Residential), LHG (Lone Hill Gateway), TCO (Technology/Commerce/Office), GRG (Grand/Route 66 Gateway) — each has purpose & permitted uses summarized in § 21.10.030–320 and detailed standards in § 21.10.350 (Table 6‑2) and other tables.

Practical guidance: For any parcel inside a specific plan boundary, start with the specific plan tables (Table 6‑2 etc.) before you reference Appendix 21.A; the specific plan's standards control. § 21.13.360(B) explains the precedence of specific plans over Title 21 within the plan area.

Quick decision‑relevant table (sample)

District / Topic	Typical permitted uses / quick standard	Key code reference
R-1 (7,500)	Single-family residences; accessory buildings; ADUs (subject to ADU rules)	§ 21.01.040; Appendix 21.A (Table A)
R-2 / R-3 / GA	Multifamily residences; development plan review required; accessory rules in § 21.04.020	§ 21.04.020; Appendix 21.A (Table B)
C-2 / C-3 / MS	Retail, restaurants, medical services; some uses require CUP	Appendix 21.A (Table C); § 21.01.040
M-1 / M-1A / IP	Light industry, industrial park uses; refuse screening and design standards required	§ 21.05.030 (D–F); Appendix 21.A (Table D)
Route 66 subdistricts (e.g., BG, GLG, TCMU, LHG)	Mixed-use, commercial, and residential mixes; specific FAR, setbacks and design rules in Table 6‑2	§ 21.10.320–350 (see Table 6‑2 and development standards)
Official zoning map	Map is part of Title 21; boundaries follow street centerlines or property lines; Director resolves boundary disputes	§ 21.01.040(C–D)

How required use/permit types are shown

The code uses Appendix tables to list which uses are Permitted (P), Permitted subject to Conditional Use Permit (CUP), or subject to Minor Conditional Use Permit (MCUP) within each commercial subdistrict — see the Route 66 use table examples and Appendix tables. § 21.10.330 and the subdistrict permit tables illustrate this.

Practical note: check the table for the district that actually appears on the official zoning map for your parcel; the same use may be allowed in one commercial subdistrict but require a CUP in another. See Glendora Variances and Exceptions for procedures if relief is needed. (/us/california/glendora/variances-and-exceptions)

Checklist (what an applicant must satisfy when proposing a project)

Confirm the parcel’s current zone on the official zoning map at the Planning Department and verify overlays or specific-plan boundaries. § 21.01.040.
Determine whether the use is listed as Permitted, CUP, or MCUP in Appendix 21.A or the applicable specific plan subdistrict table (e.g., Table 6‑2). § 21.10.330 / Appendix tables.
Confirm development standards (lot area, setbacks, height, FAR) in Appendix 21.A Table A/B/C/D or in the specific plan tables (Table 6‑2). § 21.04.020, § 21.05.030, § 21.10.350.
Prepare a complete application per permit rules and submittal checklist and pay applicable fees; see § 21.02.010.
If the site is inside a specific plan area, confirm whether the specific plan (not Title 21) contains the controlling development rules and design guidelines. § 21.13.360.
Determine whether project requires Design Review, Development Plan Review, or a public hearing (use § 21.02.040 and Route 66 development review procedures § 21.10.430). See Glendora Design Review. (/us/california/glendora/design-review)
Check parking requirements as they apply to the proposed land use and note that parking may be separately regulated (off‑street parking standards). See Glendora Parking. (/us/california/glendora/parking)

Risks & Ambiguities

Issue	Why it matters	What to verify
Specific plan vs. Title 21 controls	Specific plans take precedence inside their boundaries — you may think Title 21 applies but the specific plan controls design and standards. § 21.13.360(B)	Confirm whether the parcel lies inside a specific plan boundary and which table (specific plan Table 6‑2 vs Appendix 21.A) governs.
Boundary interpretation	Map lines can be approximate; the Director may interpret boundaries. § 21.01.040(D)	Verify exact parcel boundary on the official zoning map at Planning Dept. If unclear, request a Director determination.
Use not listed in a zone	Unlisted uses are prohibited unless the Director makes a use determination (similarity test). § 21.01.030(D)	If your proposed use isn’t listed, request a use determination from the Director and assemble a complete use description.
Standard numeric values in Appendix 21.A (Appendix is separate)	Many specific numeric limits (setbacks, lot sizes, FAR) are in Appendix 21.A rather than in the main text	Pull the current Appendix 21.A tables before designing. Appendix references appear in § 21.04.020, § 21.05.030, and others.
Parcel inside multiple overlay/specific plan layers	Multiple overlays and specific plans may attach additional controls (historic overlays, height overlays, etc.)	Check the official zoning map legend and the separate overlay sections (HPOZ, H, MHP). Verify with Planning Dept. § 21.01.040.

Plain‑English summary

Glendora’s zoning code (Title 21) identifies the labeled zones (R‑1, R‑2, C‑2, M‑1, etc.), makes the official zoning map part of the code, and sets out where to look for the actual numbers you’ll need (Appendix 21.A or the applicable specific plan tables like Table 6‑2). For any project, first confirm the parcel’s zone on the official map, then check whether a specific plan or an overlay changes the rules — the code gives the Director and the Planning Department roles to answer boundary/use uncertainties. § 21.01.040, § 21.01.030, § 21.13.360.

Source References

Title 21 (Zoning) — Purpose and administration, § 21.01.010–030.
Zone classifications and official zoning map rules, § 21.01.040.
Permit application procedures (completeness & materials), § 21.02.010.
Multiple‑family residential zones and standards (Appendix references), § 21.04.020.
Manufacturing & industrial zone purpose and standards, § 21.05.030.
Special use zones (cemetery, PR, PD, R-4, OSN, SP), Chapter 21.06 (see § 21.06.010–050).
Route 66 specific plan subdistricts, purposes, and Table 6‑2 development standards, § 21.10.030–350 (Table 6‑2 shown in § 21.10.350).
Specific plan precedence and implementation rules, § 21.13.360.

(If you want direct copies of Appendix 21.A tables, the specific plan development tables, or the official zoning map exhibit, request those and I’ll point to the exact appendix pages and ordinance exhibits.)

Sources

Retrieved passages

Glendora Zoning Code (§ 2) High relevance
Glendora Zoning Code (Section 21.02.030) High relevance
Glendora Zoning Code High relevance
Glendora Zoning Code (§ 2) High relevance
Glendora Zoning Code (§ 1) High relevance
Glendora Zoning Code (§ 21.05.030.) High relevance
Glendora Zoning Code (§ 1) High relevance
Glendora Zoning Code (§ 2) Medium relevance
Glendora Zoning Code (§ 1) Medium relevance
Glendora Zoning Code (§ 1) Medium relevance
Glendora Zoning Code Medium relevance
Glendora Zoning Code (Section 3.0) Medium relevance
Glendora Zoning Code (§ 2) Medium relevance
Glendora Zoning Code (§ 2) Medium relevance
Glendora Zoning Code (§ 1) Medium relevance
Glendora Zoning Code (Title 21.) Medium relevance

Cited sections

Official Glendora code library

Frequently asked questions

What can I build on an R-1 lot in Glendora?

You can build uses allowed in the R‑1 single‑family zone such as detached single‑family dwellings, accessory buildings and accessory dwelling units (subject to separate ADU rules). Exact lot-area, setback and height limits are in Appendix 21.A (Table A) referenced by § 21.01.040 and the single‑family standards in § 21.04.020. Verify the parcel’s zone and the Appendix numbers with the Planning Department.

What are Glendora setback requirements?

Setback minimums are set by zone and listed in Appendix 21.A (Table A, B, C, D) or in a specific plan table where the parcel lies within a specific plan (e.g., Table 6‑2 for Route 66). See the references in § 21.04.020, § 21.05.030, and § 21.10.350 and pull the exact Appendix/specific‑plan table for parcel-level numbers.

Do I need design review in Glendora?

Many projects subject to Development Plan Review or discretionary entitlements will require design review; the Route 66 specific plan explicitly references development review procedures tied to Chapter 21.02 and § 21.10.430. Whether your project triggers design review depends on zone, project scale, and whether it’s in a specific plan. See the city’s design review procedures. (/us/california/glendora/design-review)

Where is the official zoning map and how are boundaries decided?

The official zoning map is part of Title 21 and is maintained on file in the Planning Department; where lines follow street or alley lines the centerline is the boundary, approximations follow property lines, and the Director resolves uncertainties. § 21.01.040(C–D). Confirm the parcel on the official map at the Planning Department for parcel‑level certainty.

What is the effect of a specific plan on zoning?

If a parcel lies within a specific plan boundary, the specific plan's regulations take precedence over Title 21 for that area. The Route 66 specific‑plan provisions and tables (e.g., Table 6‑2) supersede Title 21 for sites inside its boundaries. See § 21.13.360(B) and the Route 66 specific plan chapters § 21.10.030–350.

Can a use not listed in the zone be approved?

A use not listed as permitted or conditional in a zone is prohibited unless the Director performs a use determination finding that the unlisted use is similar to listed uses; see § 21.01.030(D) for the use determination procedure. If you have an unusual use, file a use determination with the Director with a detailed description.

How do I change the zoning on a parcel (zone change)?

Zone changes (amendment of the official zoning map) follow the amendment process in § 21.01.050: application, fees, public hearings, Planning Commission recommendation and City Council action. Parcels proposed to be changed to SP (Specific Plan) have additional initiation rules (owner consent thresholds).

Does Glendora allow development intensity bonuses (e.g., more FAR) for consolidation?

Yes — the Route 66 specific plan provides lot consolidation and FAR bonus incentives (Table 6‑6) for certain commercial subdistricts; see § 21.10.420 and Table 6‑6 for allowable bonus amounts by subdistrict. These incentives are discretionary and granted by the council.

Are there special rules for manufacturing zones (M‑1, M‑1A)?

Yes — manufacturing/industrial zones have purposes to limit impacts and require refuse screening, design standards, and development plan review; minimums and maximums are specified in Appendix 21.A (Table D) and § 21.05.030 details operational and design expectations.

If my lot is on Route 66, which rules apply?

If the lot is in the Route 66 Corridor specific plan area, the specific plan land‑use subdistrict (BG, GCG, TCMU, etc.) and its development standards and use tables (e.g., § 21.10.350 Table 6‑2) control. Check which subdistrict label the parcel has on the specific plan zoning map and review the corresponding table.

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