Local zoning · Commerce

Commerce — Historic Preservation

Historic Preservation under the Commerce local zoning and planning code, with the controlling citations.

Last reviewed: July 1, 2026

Overview

The City of Commerce regulates historic preservation through a two-part structure in Title 19: a short chapter that creates Historic Landmark and Historic District designations (§ 19.17.010 et seq.) and a procedural Division that lays out how designations and reviews work (Division 14, § 19.39.930 et seq.). Designation, maintenance obligations, and alteration-review procedures are administered through the Community Development Department, the Planning Commission acting as the Cultural Resource Management Commission (CRMC), and ultimately the City Council; alteration permits require noticed public hearings and specific findings. See § 19.17.010, § 19.17.050, and § 19.39.940.

Because the code ties historic protections to planning procedures rather than to a new dimensional overlay zone, most substantive development standards (setbacks, lot coverage, height) remain governed by the applicable zone and by the city's general site-planning rules; applicants should therefore expect historic-review requirements to be layered on top of ordinary zone rules and Commerce Development Standards. See § 19.19.020 and § 19.17.080.

(Note: this page covers only Historic Preservation provisions of Commerce’s Title 19. For building-code questions see the California Building Standards Code.)

How Commerce structures preservation (district-by-district / designation breakdown)

The Commerce code does not create a recurring standalone “Historic Overlay Zone” with its own numeric dimensional table. Instead, the code provides (1) two designation types — Historic Landmark and Historic District — and (2) a review/administration process that applies citywide when a designation exists or is proposed. The summaries below treat the designation types as the operative "districts" for preservation purposes.

Historic Landmark

Purpose: To identify and protect individual resources (buildings, works of art, objects) that have "special character or historical or aesthetic value" as defined by the code; established to "recognize and preserve the history of the City of Commerce and Southern California." § 19.17.010 and definition in § 19.45 ("Historic landmark").
Typical permitted uses: The ordinance does not change base zoning use permissions when a property is designated a landmark; permitted uses continue to be those of the underlying zone unless a separate land‑use action is taken. Not found in retrieved materials: any automatic change to allowed uses upon designation. Verify with the jurisdiction.
Key dimensional/development standards: The code does not list special setback, height, FAR, or lot‑coverage standards specifically for landmarks. Site planning and general development standards still apply and the more stringent standard governs where conflicts exist — see § 19.19.020. For any project, applicants must also follow applicable design review and development standards. § 19.19.020, § 19.17.080.
Where it applies: Citywide designation authority; any person with a legal vested interest may initiate a landmark nomination; CRMC/Planning Commission and City Council act through public hearings and ordinance to designate. See § 19.39.940 and § 19.39.950–960.

Historic District

Purpose: To identify areas (neighborhoods, groups of buildings) that together represent important historical, cultural, or architectural characteristics. See § 19.17.010 and Division 14 § 19.39.930.
Typical permitted uses: The ordinance does not itself reclassify or list uses for properties inside a district; individual parcels retain their base‑zone uses unless a separate zone change or conditional permit is granted. Not found in retrieved materials: district‑specific use tables. Verify with the jurisdiction.
Key dimensional/development standards: Not specified in the historic chapters; standard development rules and setbacks/development standards apply. The code requires that alteration/restoration of designated resources be reviewed under the landmark/district alteration permit process (public hearing required). § 19.17.050, § 19.19.020.
Where it applies: District designation may be initiated by an individual, the Community Development Director, the Planning Commission, or City Council; designation requires CRMC recommendation and City Council ordinance. § 19.39.940–950.

How historic review interacts with other zone districts and overlays

Overlay zones and specific plans continue to govern their own standards; where a specific plan contains different rules it prevails over Title 19 (Modelo Specific Plan example is referenced elsewhere in Title 19). If a historic designation exists, historic review procedures are layered on top of existing zone rules and overlay district language. See § 19.16.020 and § 19.17.080.
The code requires that site‑planning standards apply to "all zone districts" and that the more stringent standard governs in a conflict; that means development standards such as parking, setbacks, landscaping and signage remain measured against their chapter rules while preservation review focuses on changes to historic fabric. See § 19.19.020 and refer projects to Commerce Parking, Commerce Landscaping and Screening, and Commerce Signage as applicable.

Quick reference table — decision‑relevant standards and procedures

Topic	What Commerce requires	Code Reference
Intent / scope of preservation	Recognize/identify/preserve historic resources; covers landmarks, sites, districts	§ 19.17.010
Who may initiate designation	Any person with a legal vested interest (landmark); individuals or City bodies (district)	§ 19.39.940(A–B)
Preliminary review & hearings	CRMC (Planning Commission sits as CRMC) does preliminary merit review; public hearings before CRMC and City Council required for designation	§ 19.39.950 and § 19.17.050(A–B)
Findings required for designation	Resource must meet one or more criteria (historic/architectural/association/representative work)	§ 19.39.960 (A–D)
Alteration / restoration permits	Public hearing required; CRMC hears landmark alteration permits; City Council is final authority on ordinances and appeals	§ 19.17.050; Table 19.39.020A (Landmark/District Alteration Permit)
Maintenance obligations	Owner must maintain designated landmark/structures; City may abate and place lien for costs	§ 19.17.040
Conflicts with state/federal law	State/federal law prevails where there is a conflict	§ 19.17.060
Relation to other Title 19 procedures	Designation & alteration follow the administrative and hearing procedures in Chapter 19.39	§ 19.17.080

Checklist — what an applicant must prepare (minimum)

Attend the required pre‑application conference with the Community Development Director (§ 19.39.060)
Complete and file the designation/alteration application on City forms, including proof of legal vested interest (owner authorization) where required (§ 19.39.070; § 19.39.940(A))
A narrative showing how the resource meets one or more designation findings (historical association, architectural significance, representative construction, or notable designer/builder) (§ 19.39.960)
Site plans, elevations, photographs, and any historic inventory materials requested by CRMC (§ 19.39.070 application requirements)
Be prepared for two public hearings (CRMC recommendation and City Council ordinance) and potential appeals (Division 4 appeals provisions) (§ 19.39.950–950; Table 19.39.020A)
If proposing physical alterations, demonstrate consistency with municipal site‑planning standards and any applicable specific plan or overlay district rules; provide analysis of parking impacts to Commerce Parking standards if required (§ 19.19.020)

Risks & Ambiguities

Issue	Why it matters	What to verify
No explicit "Historic Overlay Zone" dimensional table	Many cities adopt overlay tables; Commerce ties preservation to procedures rather than new numeric zone rules — this leaves dimensional standards ambiguous for nominated areas	Confirm with Community Development whether the City adds ad‑hoc conditions or specific-plan amendments for a district (Verify with the jurisdiction). Not found in retrieved materials.
No automatic change to permitted uses on designation	Owners often expect designation to change allowed uses; Title 19 does not automatically alter a parcel’s base‑zone uses	Verify whether any conditional use requirement or recorded covenant will be imposed at designation. Not found in retrieved materials.
Overlap with other discretionary approvals	Alterations may trigger site plan review, variances, or specific-plan compliance, creating multiple public hearings and timing risk	Coordinate early (pre‑app) to identify concurrent applications (see Commerce Variances and Exceptions and § 19.39.060).
State/federal law interactions	Projects affecting California or federally listed resources may invoke State CEQA or federal review (Section 106)	Confirm whether resource is on California Register / National Register and whether state ADU or other housing laws affect review; Code notes state/federal law prevails (§ 19.17.060).
Enforcement/remedies	City can abate maintenance failures and record a lien; owners face financial exposure if they neglect maintenance (§ 19.17.040)	Verify past enforcement practice and lien procedures with city staff.

Plain‑English summary

Commerce designates individual buildings or groups of buildings as Historic Landmarks or Historic Districts through a public hearing process run by the Planning Commission (as the Cultural Resource Management Commission) and the City Council; designation does not automatically change your base zoning but does require public hearings for most exterior alterations and creates an ongoing maintenance obligation for owners (§ 19.39.940–950; § 19.17.040; § 19.17.050).

Source References

Commerce Municipal Code, Title 19 — CHAPTER 19.17 Historic Landmark/District (Intent, Maintenance, Alteration Permits) — § 19.17.010–080.
Commerce Municipal Code, Title 19 — CHAPTER 19.39 Division 14 (Historic Landmark/District Designation procedures; initiation, hearings, findings) — § 19.39.930–960.
Commerce Municipal Code, Title 19 — Site Planning and General Development Standards (applicability across zones) — § 19.19.010–020.
Commerce Municipal Code, Title 19 — Definitions (Historic District / Historic Landmark definitions) — § 19.45 ("H" Definitions).
Commerce Municipal Code, Title 19 — Administrative tables and hearing body authorities (Table 19.39.020A showing review authorities including Landmark/District Alteration Permit).

Sources

Retrieved passages

Commerce Zoning Code (§ 1) High relevance
Commerce Zoning Code (Chapter 19.17) High relevance
Commerce Zoning Code (§ 1) High relevance
Commerce Zoning Code (§ 1) High relevance
Commerce Zoning Code (Chapter 19.39.) High relevance
Commerce Zoning Code (Chapter 39) High relevance
Commerce Zoning Code (Title 19) Medium relevance
Commerce Zoning Code (Chapter 2.08) Medium relevance

Cited sections

Official Commerce code library

Frequently asked questions

What is the process to designate a property as a historic landmark in Commerce?

Any person with a legal vested interest may apply; the Community Development Director forwards a complete application to the Cultural Resource Management Commission for merit review, followed by public hearings before the CRMC and City Council, which acts by ordinance to designate. Required findings are set out in § 19.39.940–950 and § 19.39.960.

If my building is designated a landmark, can I still use it the same way?

Designation does not itself rewrite the base zone's permitted uses in the ordinance; the code does not identify an automatic use‑change on designation. Confirm whether conditions or covenants were attached at the time of designation. Not found in retrieved materials: any automatic use changes on designation.

Do exterior alterations to a designated landmark require a public hearing?

Yes. An alteration or restoration permit for a designated landmark or a structure within a historic district requires public hearings; the Planning Commission sits as the CRMC to hear such matters and the permit procedure is described in § 19.17.050 and Table 19.39.020A.

Who serves as the Cultural Resource Management Commission (CRMC) in Commerce?

The CRMC is comprised of all members of the Planning Commission; the Planning Commission sits as the CRMC for historic matters (see § 19.39.030 D and related duties in § 19.39.040 C).

What findings does the City Council make to approve a historic designation?

The City Council must find one or more criteria are satisfied, such as the resource exemplifying important local/regional history, association with significant people/events, notable architectural or construction characteristics, or representing a notable aesthetic work of a designer or builder (§ 19.39.960 A–D).

Can the City force repairs if an owner lets a landmark deteriorate?

Yes. The owner or person in charge must maintain designated landmarks or district structures; if they fail to maintain them, the City may make necessary improvements and place a lien for costs against the property (§ 19.17.040).

Will designation change setback, height, or parking rules for a property?

Commerce’s historic chapters do not list separate setback/height/parking tables for designated properties; site planning and general development standards continue to apply to all zones, and the more stringent standard governs. Applicants should coordinate historic review with standard setback/development standards and Commerce Parking rules. § 19.19.020.

Can an ADU be built on a designated historic property in Commerce?

The Commerce code does not specifically prohibit ADUs on landmark properties; however, alterations to a designated property trigger historic alteration permits and public hearings. Verify whether any designation conditions restrict ADUs and review applicable state ADU law; see Commerce ADU rules and § 19.17.050 for alteration review. Not found in retrieved materials: explicit local ADU exception for historic resources.

If I disagree with a CRMC decision on a landmark alteration permit, can I appeal?

Yes — decisions of the CRMC and Planning Commission may be appealed to the City Council as provided in Division 4 (Appeals and Revocations) of Chapter 19.39 and Table 19.39.020A shows appeal paths. § 19.39.020A and related appeals provisions.

Does Commerce maintain an official historic inventory or list?

The CRMC is charged to prepare an inventory of potential landmarks and historic districts and recommend designations to the City Council; the code assigns this duty to the Commission but the current public inventory (map/list) is not included in the retrieved materials. § 19.39.040 (CRMC duties).

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