Local zoning · San Jacinto

San Jacinto — Historic Preservation

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

Last reviewed: July 2, 2026

Overview

This page explains how San Jacinto’s Development Code treats historic resources: how properties are designated, what review is required for changes, and how designation interacts with each local zoning district. The rules live in Chapter 17.510 (Historic Preservation) of San Jacinto’s Development Code; the City also ties historic protection into the citywide zoning map and zone rules and the site plan & design review process. See the Code for parcel‑specific verification. § 17.510.010

What the ordinance does (short synthesis)

The City creates and maintains a San Jacinto Register of Historic Resources and authorizes the Planning Commission to designate historic resources with owner consent (§ 17.510.030; 17.510.040) .
Alterations to designated resources must follow the Secretary of the Interior's Standards and the State Historical Building Code; the code sets clear Director vs Commission review thresholds based on size, visibility, and character of the work (§ 17.510.060) .
Potential historic resources identified in the General Plan or project review trigger professional study and mitigation options (avoidance, relocation, documentation) consistent with CEQA (§ 17.510.070) .
Designation is recorded with the City Clerk and flagged for future building/demolition permits (§ 17.510.040.E) .

How review & standards apply (key rules)

Purpose and authority: Chapter 17.510 establishes the program and the Commission’s duties (purpose in § 17.510.010, duties in § 17.510.020) .
Register and designation: The City keeps a register and designations are made by the Commission with owner consent; decisions are subject to appeals per § 17.715 (Appeals) and noticing rules in § 17.710 (Public Noticing and Hearings) (§ 17.510.030–040) .
Criteria for designation: Eligibility criteria (architectural, historical, association, integrity, unique visual characteristic, etc.) are listed in § 17.510.050 .
Alterations and thresholds: Rehabilitation must follow the Secretary standards and the State Historical Building Code; the code defines Director vs Commission vs Commission+site plan & design review jurisdiction by alteration type (minor improvements, expansions <10%, additions >10% etc.) in § 17.510.060; some actions (demolition, enlargement >50%, visible changes) require Commission review or site plan & design review under Chapter 17.630 (§ 17.510.060) .
Potential-resource protection: Where a structure is flagged in the General Plan (Figure RM‑4) the City can require a qualified study and mitigation (retain/rehab, relocate, documentation) under § 17.510.070; CEQA compliance is explicitly referenced (§ 17.510.070) .

Note: site-level development standards (setbacks, heights, lot coverage) remain in the Article 2 zone tables and Article 3 standards; historic designation does not automatically change base zone development standards but the Commission may waive standards or approve otherwise‑disallowed uses to preserve a resource (§ 17.510.060.D–E) .

District-by-district breakdown

Below are the City’s zoning districts (Table 2‑1) with how historic-preservation review interacts in each district. For each district I list the district purpose (from the code), common/typical uses (per Table 2‑2), key standards where the Code gives them (refer to the cited development standards tables), and where the zone is applied (Zoning Map adopted by reference). Always verify parcel zoning and any overlay status with the City. Table and chapter citations follow each district.

Notes before reading the list:

The City zones are the symbols listed in Table 2‑1 (e.g., RE, RL, CN, MU, DV, etc.). See § 17.200.020 and the Zoning Map (§ 17.200.030) for formal application and boundaries.
Historic rules apply citywide: a designated historic resource is protected and review thresholds apply regardless of whether property sits in residential, commercial, industrial, mixed‑use, or special purpose zones; the same alteration thresholds in § 17.510.060 control who reviews alterations.

RE — Residential Estate

Purpose: Very low density residential and conservation (Table 2‑1) (§ 17.200.020) .
Typical permitted uses: estate single‑family homes, accessory agricultural uses (see Table 2‑2). See § 17.215.020 for residential uses.
Key dimensional standards: minimum parcel area 2 acres, front setback 25 ft, lot coverage 50% as listed in Table 2‑4 (Residential standards) (§ 17.215.030, Table 2‑4) .
How historic rules apply: Same designation and alteration thresholds apply. Any alteration that is >10% floor‑area increase or readily visible from the street may be referred to the Commission (§ 17.510.060) .

RR — Rural Residential

Purpose: Low‑density rural residential uses and limited agriculture (§ 17.230.010; Table 2‑1) .
Typical uses: single‑family homes, limited farming, accessory structures (Table 2‑2) .
Key standards: parcel area 15,000 sq ft, front setback 25 ft, lot coverage 50% per Table 2‑4 (§ 17.215.030) .
Historic interaction: Alterations triggering Commission review remain the same (§ 17.510.060) and relocation or mitigation options under § 17.510.070 apply if the resource would be impacted.

RL — Residential, Low‑Density

Purpose: Typical low‑density residential neighborhood (Table 2‑1) (§ 17.200.020) .
Typical uses: single‑family homes, accessory units (Table 2‑2) .
Key standards: parcel area 5,000 sq ft, front setback 20 ft, lot coverage 55% (Table 2‑4) (§ 17.215.030–040) .
Historic interaction: ADU rules note that parking exceptions apply in architecturally/historically significant historic districts—check ADU rules before design (see § 17. ADU provisions; see also State ADU law). Notably, ADU parking may be waived for units in historic districts (ADU subsection in Dev Code) .

RM — Residential, Medium‑Density

Purpose/uses/standards: density up to 14 du/ac, front setback 15 ft (house), lot coverage 60% as in Table 2‑4 (§ 17.215.030, Table 2‑4) .
Historic interaction: same alteration review triggers; multi‑unit projects will also be processed through site plan & design review where applicable (see Chapter 17.630) .

RH — Residential, High‑Density and RVH — Residential, Very High‑Density

Purpose: Higher density multifamily housing (Table 2‑1). Key development caps (density/height/lot coverage) are in Table 2‑4 (RH max density 22 du/ac, RVH max 32 du/ac; primary structure heights up to 45 ft in RH/RVH) (§ 17.215.030, Table 2‑4; § 17.305.060 for height measurement) .
Historic interaction: Larger additions and redevelopment in these zones trigger design review (Director or Commission depends on project size) and the historic thresholds still apply (§ 17.630.030; § 17.510.060) .

CN, CG, CR — Commercial Neighborhood / General / Regional

Purpose: Neighborhood to regional retail and service uses (Table 2‑1) (§ 17.200.020) .
Typical uses: retail, restaurants, offices, community institutions per Table 2‑2 (use table) .
Key dimensional standards: Commercial standards (setbacks, lot coverage, heights) are given in Article 2 and specific zone tables; where numbers are not reproduced here, refer to the underlying Table entries (Table 2‑2/Article 3/Chapter 17.305). If a commercial building is designated historic, façade changes, additions, or demolition will follow § 17.510.060 and will typically require site plan & design review (Chapter 17.630) and possibly Commission review for demolition. .

OP — Office Park; BP — Business Park; IL/IH — Industrial Light/Heavy

Purpose/typical uses: offices, business campuses, light/heavy industrial activities (Table 2‑1) .
Historic interaction: Industrial or office buildings with historic significance are treated the same—alterations visible from public rights‑of‑way, demolitions, or large enlargements will require Commission review and site plan & design review per § 17.510.060 and 17.630. If a very large project is proposed, environmental, CEQA, and resource studies (per § 17.510.070) may be required. .

MU / MU‑E — Mixed‑Use and Mixed‑Use Entertainment

Purpose: Mix of residential and nonresidential uses; small‑lot detached residential standards and incentives exist for MU zones (see Table 2‑9 and Table 2‑4 references) (§ 17.427; Table 2‑9) .
Typical uses: ground‑floor retail with residential above; small lot single‑family detached may be allowed subject to MU standards. .
Historic interaction: In MU areas (particularly DV — Downtown Village) preservation goals may be heightened; alterations to designated resources will require Commission/site plan & design review and can affect allowable uses or density incentives only if the Commission grants waivers or special approvals under § 17.510.060.D–E. .

DV — Downtown Village

Purpose: Downtown core, pedestrian orientation, mixed uses (Table 2‑1) (§ 17.200.020) .
Typical uses: retail, civic, offices, residential above ground floor. Redevelopment in DV is subject to design review and often intersects historic preservation because downtown cores commonly contain older buildings; alterations visible from the public right‑of‑way are explicitly a Commission review trigger (§ 17.510.060) .

OSG / OSR / PI / SP / W (Special purpose zones)

Purpose: Open space, recreation, public institutional, specific plan, and water source zones (Chapter 17.230) — applied to parks, water district lands, institutional uses, and large master‑planned areas (§ 17.230.010–020) .
Typical uses: passive/active recreation, public facilities, special plan uses.
Historic interaction: Historic resources on public institutional or open space lands are still subject to designation; the Code allows the City to require mitigation documentation or relocation and the Commission may waive standards to preserve a resource (§ 17.510.070; 17.510.060.D–E) .

Combining/Overlay Zones (examples: -RAAB, -H6)

Purpose: Overlays provide special rules layered over base zones (listed in Table 2‑1) (§ 17.200.020) .
Typical interaction with historic preservation: Overlays may add additional constraints or incentives (for example historic district overlays — if present would be listed on the Zoning Map). If a property sits in an overlay that references historic guidelines or an "architecturally and historically significant historic district" the Code specifically allows ADU parking exceptions and flags additional protections. Verify overlay mapping with the City and the Zoning Map (§ 17.200.030) — Not found in retrieved materials: a named "Historic Overlay" map layer is not printed in the excerpts; verify with the Planning Department.

Quick reference table — Decision‑relevant historic standards

Action / Project	Review level required	Trigger / Limit	Code Reference
Minor exterior changes, small equipment (AC units, fences, skylights, solar panels)	Director review (may refer to Commission)	Minor improvements; small visibility impacts	§ 17.510.060
Additions <10% floor area and not readily visible from public street	Director review	Expansion <10% and not readily visible	§ 17.510.060.C.1.c
Additions >10% but ≤50% (and ≤500 sq ft)	Commission review	Expansion >10% and ≤50% (≤500 sq ft)	§ 17.510.060.C.2.c
Additions >50% or >500 sq ft; demolition or relocation	Commission + site plan & design review required	Enlargement >50% or >500 sq ft; demolition	§ 17.510.060.C.3 and Chapter 17.630
Resource flagged in General Plan (Figure RM‑4)	Historic study by qualified professional; mitigation/relocation options	Triggered during project review; CEQA Guidelines §15064.5 referenced	§ 17.510.070
Designation as historic resource	Owner consent required; public hearing and Commission resolution; appeals to Council	Owner must consent for designation; notice placed in City Clerk/building permit file	§ 17.510.040

Checklist

Confirm whether the parcel or structure is on the San Jacinto Register of Historic Resources (City Clerk) (§ 17.510.030) .
If proposing work on a building flagged historic or potentially historic, order a qualified archaeological/historic study (CEQA/§ 17.510.070) .
Determine the review authority for the proposed change: Director vs Commission vs Commission + site plan & design review using § 17.510.060 and Chapter 17.630 (§ 17.510.060, 17.630.030) .
Prepare designs that comply with the Secretary of the Interior's Standards and consult the State Historical Building Code where applicable (§ 17.510.060.A) .
If applied for designation, provide owner consent and be prepared for public notice/hearing requirements in § 17.510.040 and Chapter 17.710 (§ 17.710) .
If project affects parking, setbacks, or ADU placement, check the parking, development standards, and ADU rules for historic‑district exceptions (§ 17.215, ADU subsections) .
Expect possible conditions: documentation, photo records, historic marker, or relocation as mitigation under § 17.510.060.C.3 and § 17.510.070.B .

Risks & Ambiguities

Issue	Why it matters	What to verify
Owner consent requirement for designation	A property cannot be designated without written owner consent — owners control whether designation proceeds (§ 17.510.040.A)	Verify recorded owner and written consent before submitting a designation application (§ 17.510.040)
Whether a parcel sits in a named historic overlay	Overlay maps (if any) change specific procedures and may waive parking or affect ADU rules	Confirm overlay status on the official Zoning Map and with Planning; Zoning Map adopted in § 17.200.030 — Not found in retrieved materials: a specific "Historic Overlay" map layer in the excerpts. Verify with the City.
Which review authority will decide	Director vs Commission vs Commission + design review affects timing, public notice, and conditions (§ 17.510.060 and 17.630)	Submit preliminary project description to Planning Director for determination and check Table 6‑2 in § 17.630.030 for review thresholds
Numeric development standards for non‑residential zones	Article 2 gives many tables; some numeric values for commercial/industrial were not reproduced in the excerpts	For exact setbacks, heights, FAR, consult the zone‑specific table in Article 2 for the specific zone or contact Planning for parcel‑specific figures — verify with the jurisdiction (§ 17.200.020, Table 2‑1)
CEQA / archaeology triggers	Projects affecting potential historic resources can trigger expensive studies and mitigation (§ 17.510.070)	Early CEQA screening and an archaeologist/historian scope of work is strongly recommended; confirm Figure RM‑4 applicability and scope with the Planning Dept.

Plain‑English summary

If you own or want to change a building in San Jacinto that is listed or eligible as historic, expect a preservation review. Small, hidden repairs usually only need a Director review; visible changes, big additions, or demolition require the Planning Commission and site plan & design review. The city can require documentation, mitigation, or even relocation of a resource instead of outright demolition; owners must consent to formal designation. See § 17.510.030–070 for the rules.

Source References

San Jacinto Development Code, Title 17 (Title and authority) — § 17.100.010–050
Chapter 17.510 — Historic Preservation: § 17.510.010 (Purpose); 17.510.020 (Duties); 17.510.030 (Register); 17.510.040 (Designation); 17.510.050 (Criteria); 17.510.060 (Alteration & review thresholds); 17.510.070 (Protection procedure); 17.510.080 (Appeals)
Zones and Zoning Map: § 17.200.020 (Zones established); § 17.200.030 (Zoning Map) — Table 2‑1 lists RE, RR, RL, RM, RH, RVH, CN, CG, CR, OP, BP, IL, IH, MU, MU‑E, DV, OSG, OSR, PI, SP, and some combining overlays (e.g., -RAAB, -H6)
Residential development standards and Table 2‑4 (setbacks, lot coverage, density, heights for RE/RR/RL/RM/RH/RVH) — § 17.215.030 and Table 2‑4
Site Plan & Design Review: Chapter 17.630 (applicability, review authority Table 6‑2) — § 17.630.010–030
ADU rules & historic‑district exceptions (ADU parking exceptions and size/lot coverage specifics are discussed in the ADU subsection) — Noted in ADU provisions of the Development Code (see ADU subsection)

Sources

Retrieved passages

CBC § 17.510.070 (§ 17.510.070.) High relevance
CBC § 17.510.070 (§ 17.510.070.) High relevance
San Jacinto Zoning Code (§ 17.510.020.) High relevance
San Jacinto Zoning Code (Chapter 17.510.) High relevance
San Jacinto Zoning Code (§ 17.510.070.) High relevance
CBC § 17.510.050 (§ 17.510.050.) High relevance
San Jacinto Zoning Code (§ 17.420.040.) High relevance
CBC § 17.910.020 (title report) Medium relevance
San Jacinto Zoning Code (§ 17.100.040.) Medium relevance
San Jacinto Zoning Code (Title 17.) Medium relevance
CBC § 17.905.030 (Title 16) Medium relevance
San Jacinto Zoning Code (Chapter 17.435) Medium relevance
San Jacinto Zoning Code (title report) Medium relevance
San Jacinto Zoning Code (Article 2) Medium relevance
California Building Code Medium relevance
San Jacinto Zoning Code (Article 8) Medium relevance
San Jacinto Zoning Code (§ 17.630.030.) Medium relevance
San Jacinto Zoning Code Medium relevance
San Jacinto Zoning Code (Article 8) Medium relevance
San Jacinto Zoning Code (Chapter 17.630.) Medium relevance
San Jacinto Zoning Code (Article 8) Medium relevance

Cited sections

Official San Jacinto code library

Frequently asked questions

What does it mean for my house to be on the San Jacinto Register of Historic Resources?

If a property is entered on the San Jacinto Register, it is a formally recognized historic resource and alterations are reviewed under the Historic Preservation chapter. The Commission maintains the Register (§ 17.510.030) and designation follows the procedure in § 17.510.040; owner consent is required to designate.

Do I need design review for a paint color change or a new fence on a historic house?

Minor exterior alterations such as fences and similar small improvements generally fall to Director review unless the Director refers the project to the Commission. See the Director review list for minor improvements in § 17.510.060; if the change is readily visible and inconsistent with the Secretary of the Interior's Standards the Director may refer it.

If I want to add 600 sq ft to a designated historic building, who decides?

An enlargement that increases the historic resource by more than 500 sq ft or more than 50% of existing floor area requires Commission review and site plan & design review per § 17.510.060.C.3 and Chapter 17.630. Expect public notice and conditions to preserve the resource.

Can the City force me to keep my building as a historic resource?

No—the Code requires owner consent for a designation (the Commission may approve designation only upon the written consent of the property owner) (§ 17.510.040.A). If the property is already designated, permits and review may limit demolition without Commission approval.

Will designation change my setback, height or lot coverage limits?

Designation alone does not automatically change the base zone development standards. The Commission may waive or modify applicable development standards to preserve a resource, or may approve a different land use to preserve the property, but base standards still appear in Article 2/Article 3 (e.g., Table 2‑4 for residential) — see § 17.510.060.D–E and the applicable zone tables.

How does the code treat archaeological or tribal resources found during construction?

If a project area has potential archaeological resources (e.g., listed in General Plan Figure RM‑4) the City requires a qualified archaeologist or historian study; tribal monitors (Soboba Band of Luiseño Indians) may be required during ground disturbance and work must halt if resources are found per § 17.510.070 and the project may need mitigation.

Can I build an ADU if my house is in a historic district or is a designated historic resource?

Yes—ADUs are allowed, but the City can apply objective standards that prevent adverse impacts to historic properties. The Development Code’s ADU provisions include specific size, setback, lot coverage, and parking rules and allow exceptions in architecturally/historically significant historic districts (check the ADU subsection in the Code). Verify ADU design standards with Planning.

What happens if I propose demolition of a designated historic building?

Demolition of a historic resource is one of the actions that triggers Commission review and site plan & design review; the Commission may require mitigation (documentation, relocation, historic marker) or deny demolition, and decisions are appealable per Chapter 17.715. See § 17.510.060.C.3 and § 17.510.040.E.

Where do I find the numeric setbacks and lot coverage for my zoned district?

Residential numeric standards (setbacks, lot coverage, parcel sizes) are in Table 2‑4 and § 17.215.030–040; for nonresidential zones consult Article 2 zone tables in the Development Code and the Zoning Map (§ 17.200.020–030). If you cannot find a parcel’s numeric standard in the online excerpt, verify with the Planning Department.

How are appeals handled if I disagree with the Director or Commission decision on a historic resource?

Decisions of the Director or Commission regarding historic resources may be appealed in compliance with Chapter 17.715 (Appeals); the Commission’s decision is the initial step and appeals to the City Council follow the timing and notice rules in Chapter 17.715. ---

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