Petaluma — Zoning

Last reviewed: July 2, 2026

Overview

This page summarizes the Petaluma Implementing Zoning Ordinance (the local zoning code) as it controls zones, the official Zoning Map, base zones, and overlays used in Petaluma. It explains where the rules live in the ordinance, what each zone is for, typical allowed uses, and the most decision‑relevant dimensional/development standards you will see on permits and project reviews. See the officially adopted Zoning Map and the ordinance text for parcel‑specific determinations; verify with the City for ambiguous or site‑specific issues. § 2.020 and § 4.030 of the ordinance establish the map, zones, and permit rules .

Note: link targets below point to related Petaluma menu pages you will likely consult while preparing an application: Petaluma zoning & planning overview, Petaluma Development Standards, Petaluma Parking, Petaluma Design Review, Petaluma Overlay Districts, Petaluma ADUs, and the California Building Standards Code (Title 24) for building code compliance (not zoning) questions.

How the ordinance adopts the map and zones

• The City formally adopts a City of Petaluma Zoning Map that is incorporated by reference into the Implementing Zoning Ordinance; uncertainties about boundaries are resolved by the Director using lot lines, map scale, or by following vacated streets into adjacent zones § 2.020 .
• The ordinance establishes the list of base zones (Table 2‑1) that implement the General Plan and shows standard zone symbols such as OSP, AG, RR, R1, R2, R3, R4, R5, MH, C1, C2, MU1A/B/C, MU2, BP, I, CF, FW, PUD, PCD, and overlay suffixes like -FP, -H, -T, -DHEO § 2.020 .
• Allowable uses and the planning permits required in each zone are set by the use tables in Chapter 4 and the permit framework in § 4.030 .

District-by-district breakdown

Below each district name is the ordinance term (bold), a short purpose statement drawn from the Implementing Zoning Ordinance, typical permitted uses, the most decision‑relevant dimensional standards (as shown in the ordinance tables), and where that zone is typically applied in Petaluma. Where the ordinance places the control, each entry cites the appropriate ordinance section or table excerpt from the retrieved materials.

OSP (Open Space and Parks)

Purpose: The OSP zone protects parks, open space, and natural resource areas and implements the General Plan open space designation § 2.020 .
Typical uses: Public parks, trails, passive recreation, and limited public safety or utility facilities (see Chapter 4 use table) § 4.030 .
Key standards: Use tables in Chapter 4 apply; intensive development is limited by the open‑space designation (refer to Chapter 4 tables) § 4.030 .
Where applied: City parks, riparian corridors, and larger open space parcels, shown on the Zoning Map § 2.020 .

AG (Agriculture)

Purpose: The AG zone preserves agricultural land and rural uses and implements the General Plan agricultural designation § 2.020 .
Typical uses: Farming, agricultural processing (limited), on‑site farm stands, and ancillary structures; utilities and limited public facilities with permits § 4.030 .
Key standards: Minimum lot sizes and rural setbacks are applied by Chapter 4 development tables (see Table 4.1/Chapter 4) § 4.030 .
Where applied: Outlying agricultural lands and buffer areas shown on the Zoning Map § 2.020 .

RR (Rural Residential)

Purpose: The RR zone is for large‑lot rural residential uses (implements rural residential GP designation) § 2.020 .
Typical uses: Single‑household residences, accessory buildings, and low‑intensity community facilities § 4.030 .
Key standards: Table 4.7 and related residential tables control minimum lot sizes, setbacks, and accessory structure rules (refer to Chapter 4 development standards) § 4.030 .
Where applied: Edge of city, hillier parcels and former rural residential subdivisions § 2.020 .

R1 (Residential 1 — Very Low Density)

Purpose: The R1 zone implements very low density residential policy § 2.020 .
Typical uses: Single‑household homes, accessory structures, limited public facilities § 4.030 .
Key standards: See the residential standards tables (e.g., Table 4.7); typical rails: minimum front setback 20 ft (where listed), accessory structure area caps, and maximum accessory dwelling unit (ADU) height 21 ft references appear throughout Chapter 4 and Chapter 7 (ADU rules) — verify specifics for an address § 4.030 .
Where applied: Very low‑density neighborhoods across Petaluma as shown on Zoning Map § 2.020 .

R2 (Residential 2 — Low Density)

Purpose: The R2 zone supports typical low‑density single‑family development § 2.020 .
Typical uses: Single‑household dwellings (P), ADUs (accessory), limited group dwellings subject to standards § 4.030 .
Key standards (Table 4.8): Minimum lot area 6,000 sf; front setback 20 ft; interior side setback 5 ft; rear setback 20 ft; max principal building height 25‑30 ft depending on measurement and exceptions. See Chapter 12 for height modifications and Chapter 7 for ADU specifics § 4.030 .
Where applied: Standard single‑family neighborhoods; check Zoning Map for parcel designation § 2.020 .

R3 (Residential 3 — Diverse Low Density)

Purpose: The R3 zone allows somewhat smaller lots and more housing variety than R2 § 2.020 .
Typical uses: Single‑household, small multifamily, and ADUs per Chapter 4 use tables § 4.030 .
Key standards (Table 4.8): Minimum lot area 4,000 sf; front setback 15 ft; interior side setback 3 ft; rear setback 15 ft. Confirm accessory structure rules and ADU exemptions in Chapter 7 § 4.030 .
Where applied: Urban residential neighborhoods with smaller lot pattern § 2.020 .

R4 (Residential 4 — Medium Density)

Purpose: The R4 zone supports medium density residential including multi‑unit buildings § 2.020 .
Typical uses: Multi‑family dwellings, residential care, and accessory uses subject to Chapter 4 § 4.030 .
Key standards (Table 4.9): Principal building height typically up to 35 ft; accessory dwelling height 21 ft; usable open space minimum 300 sf per unit (may be common). See Table 4.9 for site coverage and other limits § 4.030 .
Where applied: Transition neighborhoods and targeted infill sites § 2.020 .

R5 (Residential 5 — High Density)

Purpose: The R5 zone allows higher density residential development to implement high density General Plan policy § 2.020 .
Typical uses: Multi‑unit housing, higher‑density apartments and accessory uses shown in Table 4.2 § 4.030 .
Key standards (Table 4.9): Principal building height up to 45 ft (with some conditions); usable open space and unit area rules apply; accessory dwelling rules in Chapter 7. See Section 12 for height increases and exceptions § 4.030 .
Where applied: Mixed‑use corridors and areas targeted for greater housing capacity § 2.020 .

MH (Mobile Home)

Purpose & typical uses: The MH zone is for mobile home parks and related uses; see Chapter 4 use tables for specific permit rules § 4.030 .
Key standards: Park design and lot‑based standards are handled through tables and Chapter 19 for PUD/PCD conversions where applicable § 4.030 .
Where applied: Existing mobile home sites mapped on the Zoning Map § 2.020 .

C1 (Commercial 1 — Neighborhood Commercial)

Purpose: The C1 zone is for neighborhood‑serving commercial uses § 2.020 .
Typical uses: Small retail, services, grocery and neighborhood commercial per Table 4.4/4.11 § 4.030 .
Key standards (Table 4.11): Front setback 0 ft (streetfront); when abutting an R district: base setback 15 ft plus 1 ft per foot of building height over 20 ft (applies to side/rear abutments) § 4.030 .
Where applied: Neighborhood shopping nodes and commercial strips shown on the Zoning Map § 2.020 .

C2 (Commercial 2 — Community Commercial)

Purpose: The C2 zone supports larger community commercial uses § 2.020 .
Typical uses: Larger retail, grocery, restaurants, offices as shown in Table 4.4/4.11; some conditional uses for big‑box or high‑impact uses § 4.030 .
Key standards: Front setback 0 ft; abutting R districts require 15 ft + 1 ft per foot of height over 20 ft; outdoor advertising (billboards) limited and require CUP in C2, BP, and I § 4.030; § 20.080 .
Where applied: Major shopping corridors, centers and commercial nodes on the Zoning Map § 2.020 .

MU1A / MU1B / MU1C (Mixed Use 1 variants)

Purpose: The MU1 family supports pedestrian‑oriented mixed use, with subvariants applied to different corridor types (A, B, C) to reflect parcel size and intensity; implements mixed use General Plan with FAR up to 2.5 and residential up to 30 units/acre § 4.030 .
Typical uses: Ground‑floor retail/office with housing above, small craft manufacturing allowed in some MU1B locations; Table 4.3 describes permitted/conditional uses by subzone § 4.030 .
Key standards (Table 4.10 / Table text): FAR 2.5; principal height typically 30 ft (with provisions to 45 ft as setback increases); site coverage and zero‑setback street fronting allowed in many MU1 locations § 4.030 .
Where applied: Corridors such as East Washington St, Petaluma Blvd N, Bodega Ave, Lakeville St (MU1A examples) and other identified corridor parcels on the Zoning Map § 4.030 .

MU2 (Mixed Use 2 — Downtown)

Purpose: The MU2 zone is applied to downtown and adjacent areas intended to match the historic downtown form; consistent with FAR 2.5 and 30 units/acre General Plan metrics § 4.030 .
Typical uses: Downtown retail, restaurants, offices and upper‑floor housing; special downtown standards are described in the Downtown Housing and Economic Opportunity Overlay (where applicable) § 4.030 .
Key standards: Maximum principal building height 30 ft (with conditional allowances to 45 ft tied to setbacks); zero‑setback street frontage permitted; design standards tied to downtown guidelines and design review § 4.030 .
Where applied: Historic downtown core and adjacent downtown parcels per the Zoning Map § 2.020 .

BP (Business Park)

Purpose: The BP zone encourages business/professional office parks, tech clusters, and light industrial with retail as secondary § 4.030 .
Typical uses: Office, research and development, light manufacturing, visitor services; retail is subordinate § 4.030 .
Key standards: FAR typically 1.5 (up to 3.0 if all parking is structured); site and landscaping standards in Chapter 4 and Chapter 11 (parking) apply § 4.030 .
Where applied: Business/industrial employment areas mapped on the Zoning Map § 2.020 .

I (Industrial)

Purpose: The I zone allows general manufacturing, distribution, warehousing, and industrial processing § 4.030 .
Typical uses: Manufacturing (light and heavier depending on location), warehousing, ancillary food service; small restaurants and service commercial allowed as ancillary uses § 4.030 .
Key standards: FAR typically 0.6 for the industrial classification; signage and outdoor advertising controlled under Chapter 20 with CUP requirements for large structures § 4.030; § 20.080 .
Where applied: Industrial parks and employment zones on the Zoning Map § 2.020 .

CF (Civic Facility)

Purpose: The CF zone is for public and semi‑public facilities such as government offices, utilities, schools, and similar uses § 4.030 .
Typical uses: Libraries, civic offices, community service facilities, school sites; uses require reviews as mapped § 4.030 .
Key standards: Public lot and building standards apply; see Chapter 4 and Chapter 11 for parking § 4.030 .
Where applied: Identified public lots and campuses on the Zoning Map § 2.020 .

FW (Floodway/Floodplain)

Purpose: The FW or floodway/flood plain designations regulate development in mapped flood hazard areas; overlay and chapter controls apply § 5.030; Chapter 6 .
Typical uses: Highly restricted — utilities and limited public safety or flood‑compatible open uses; new permanent structures are often prohibited unless permitted under strict conditions in the Floodway rules § 5.030; Ch.6 .
Key standards: See Floodway and Flood Plain District chapter for elevation, permit and mitigation requirements § 5.030; Chapter 6 .

PUD / PCD (Planned Unit District / Planned Community District)

Purpose: PUD/PCD allow site‑specific planned development under a Unit/General Development Plan; modifications and plan consistency requirements are spelled out in Chapter 19 § 19.050–19.070 .
Typical uses: Project‑level mix of residential, commercial, and public uses consistent with an approved plan.
Key standards: No permits or building permits may be issued unless consistent with the approved Unit Development Plan; modifications require findings equivalent to original approvals § 19.050 .
Where applied: Large master‑planned parcels and developments specifically rezoned to PUD/PCD on the Zoning Map § 2.020 .

Overlay districts (mapping and rule interplay)

Purpose: Overlay districts add additional standards atop the base zone to address site‑specific issues (historic, floodplain, theater district, downtown housing and economic opportunity, Fairgrounds, etc.) § 5.010–5.020 .
Key rules: Overlays are mapped as suffixes appended to base zone symbols (for example R2‑H or MU2‑DHEO) and impose additional permit or design review requirements; they do not remove base zone uses unless explicitly stated § 5.020 .
Examples: Historic Overlay (-H) applies historic preservation rules (Chapter 15) § 5.040 ; Theater Overlay (-T) limits movie theater siting and defines district boundaries and special rules § 5.050 ; Downtown Housing and Economic Opportunity (-DHEO) may change some development standards downtown (see § 5.070) § 5.020; § 5.070 Not found in retrieved materials .

Key decision‑relevant standards (at‑a‑glance)

The ordinance embeds numeric standards in the Chapter 4 development tables and related sections; below is a compact table of the most commonly used decision standards with code references.

(These values are pulled from the Chapter 4 development tables, the MU descriptions and overlay chapter in the Implementing Zoning Ordinance — see references above and the ordinance tables for parcel‑specific checks.)

Information Gaps

• Exact parcel‑level zoning and the official graphical Zoning Map image are not included in the retrieved text; the ordinance incorporates a separate map on file with the Department — for parcel results, consult the City’s official Zoning Map (verify with the City). See § 2.020 .
• Some map‑scale or section cross‑references (e.g., precise section numbers for the MU1A/B/C narrative subsections) were presented as narrative headings in the retrieved material without discrete numbered subsections; where a numeric § was not visible in the excerpts, confirm with the City Clerk or the full hosted ordinance. Not found in retrieved materials.
• Downtown overlay specifics (full text of § 5.070 and any recent amendments to DHEO) were not fully present in the excerpts; verify the current overlay text on the official ordinance web page. Not found in retrieved materials.

Checklist (what an applicant must satisfy before believing a project is "zoning‑compliant")

• Confirm the parcel’s base zone and any overlay suffix on the official City of Petaluma Zoning Map (adopted in § 2.020) .
• Confirm allowable uses and required planning permit type in Chapter 4 use tables (§ 4.030) for that zone and any overlay (P, CUP, S, A) .
• Meet base zone dimensional standards (lot area, setbacks, height, FAR, coverage) in the Chapter 4 development tables; apply Chapter 12 setback/height modification rules where requested § 4.030 .
• Provide parking calculations per [Petaluma Parking] standards and Chapter 11 requirements; structured parking allowances affect FAR in BP zones § 4.030 .
• Confirm applicability of overlays (historic, floodplain, theater, downtown overlays) and supply required findings/mitigations per § 5.020 and overlay text § 5.030–5.050 .
• Determine if design review / Site Plan & Architectural Review (SPAR) is required and prepare materials per [Petaluma Design Review] guidance; many mixed‑use, commercial, and public projects require SPAR § 4.030; § 24.050 (design review chapter not fully excerpted) .
• For ADUs, follow Petaluma ADU rules and Chapter 7 exceptions (state ADU law intersection): see [Petaluma ADUs] and Chapter 7 references § 7.030 .
• If locating in a floodway/floodplain overlay, comply with flood elevation, prohibition and mitigation rules in Chapter 6 and § 5.030 .
• If proposing a PUD/PCD, ensure project documents and any model home allowances conform to Chapter 19 requirements and recorded Unit Development Plan § 19.050–19.070 .

Risks & Ambiguities

Plain‑English Summary

Petaluma’s Implementing Zoning Ordinance ties each parcel to a base zone (R1–R5, MU1/MU2, C1/C2, BP, I, CF, etc.) on the official Zoning Map and adds mapped overlays (historic, floodplain, theater, downtown opportunity). The Chapter 4 use tables tell you what is permitted or requires a Conditional Use Permit, and the Chapter 4 development tables give the key numbers (setbacks, heights, FAR, lot sizes); overlays add rules on top of the base zone. Always check the official Zoning Map and the specific chapter/table entries for the parcel because overlays and PUD/PCD plans can change what’s allowed § 2.020; § 4.030; § 5.020 .

Source References

• Petaluma Implementing Zoning Ordinance — Chapter 2: Zoning Map and Zones: § 2.010, § 2.020 (adoption of the Zoning Map and list of zones) .
• Petaluma Implementing Zoning Ordinance — Chapter 3: Development and Land Use Approval Requirements: § 3.010 (permit framework) .
• Petaluma Implementing Zoning Ordinance — Chapter 4: Zone Districts and Allowable Land Uses: § 4.030 (use tables), development tables (Tables 4.1–4.11) for numeric standards (R2/R3, R4/R5, MU1/MU2, C1/C2) .
• Petaluma Implementing Zoning Ordinance — Chapter 5: Overlay Zones, including § 5.010, § 5.020, § 5.030, § 5.040, § 5.050 (overlay applicability and examples such as Theater and Historic Overlay) .
• Chapter 6 (Floodway and Flood Plain Districts) and Chapter 7 (Standards for Specific Land Uses, including ADU references like § 7.030) as cited in Chapter 4 tables (see floodplain and ADU callouts) .
• Chapter 19 (Planned Unit District and Planned Community District) for PUD/PCD rules and findings § 19.050 onward .
• Chapter 20 (Signs and Sign Structures) for sign rules and billboard CUP details (e.g., § 20.080) .
• Hosted ordinance notice: Implementing Zoning Ordinance is current through Ordinance 2907 (passed Sept. 8, 2025) as noted in retrieved materials (verify with City Clerk for updates) .

Retrieved passages

• Petaluma Zoning Code (section 65583.2) High relevance show source text
• Petaluma Zoning Code High relevance show source text
• Petaluma Zoning Code (Section 3.030) High relevance show source text
• Petaluma Zoning Code (Section 24.060) High relevance show source text
• Petaluma Zoning Code (Chapter 12) High relevance show source text
• Petaluma Zoning Code (Chapter 6) High relevance show source text
• Petaluma Zoning Code (Section 21.030) High relevance show source text

Cited sections

• Petaluma Implementing Zoning Ordinance — Chapter 2: Zoning Map and Zones: **§ 2.010**, **§ 2.020** (adoption of the Zoning Map and list of zones) . (Chapter 2)
• Petaluma Implementing Zoning Ordinance — Chapter 3: Development and Land Use Approval Requirements: **§ 3.010** (permit framework) . (Chapter 3)
• Petaluma Implementing Zoning Ordinance — Chapter 4: Zone Districts and Allowable Land Uses: **§ 4.030** (use tables), development tables (Tables 4.1–4.11) for numeric standards (R2/R3, R4/R5, MU1/MU2, C1/C2) . (Chapter 4)
• Petaluma Implementing Zoning Ordinance — Chapter 5: Overlay Zones, including **§ 5.010**, **§ 5.020**, **§ 5.030**, **§ 5.040**, **§ 5.050** (overlay applicability and examples such as Theater and Historic Overlay) . (Chapter 5)
• Chapter 6 (Floodway and Flood Plain Districts) and Chapter 7 (Standards for Specific Land Uses, including ADU references like **§ 7.030**) as cited in Chapter 4 tables (see floodplain and ADU callouts) . (Chapter 6)
• Chapter 19 (Planned Unit District and Planned Community District) for PUD/PCD rules and findings **§ 19.050** onward . (Chapter 19)
• Chapter 20 (Signs and Sign Structures) for sign rules and billboard CUP details (e.g., **§ 20.080**) . (Chapter 20)
• Hosted ordinance notice: Implementing Zoning Ordinance is current through Ordinance 2907 (passed Sept. 8, 2025) as noted in retrieved materials (verify with City Clerk for updates) .
• Petaluma_ZoningCode.md

• Official Petaluma code library