Cotati Zoning, Planning & Building Codes

Last reviewed: July 1, 2026

Overview

Cotati’s local land-use rules are codified in Title 17 (Land Use) of the municipal code; the zoning map and the list of districts are adopted and on file with the city, and the code is organized so the map, allowable uses, development standards, and permit procedures are all cross-referenced within Title 17 (§ 17.20.020; § 17.10.010) . The code separates (1) district rules and numeric standards in Article 2 (Chapter 17.20–17.24), (2) citywide site‑planning and operational standards in Article 3 (Chapter 17.30), (3) use‑specific rules in Article 4 (Chapter 17.42), and (4) the application/permit process in Article 6 (Chapters 17.60–17.64) (§ 17.24.010; § 17.30.010; § 17.22.020; § 17.60.010) . For a practical entry point, start with the city’s Land Use tables and the zoning map in § 17.20.020 and then read the district table in § 17.24.020 to see parcel‑size and density limits (§ 17.20.020; § 17.24.020) .

How Cotati's code is organized

• Title and high‑level structure — the land‑use/zoning rules live in Title 17 (Land Use); the ordinance table of contents shows Chapters for the zoning map, district standards, site planning, use standards, permit processing, and administration (§ 17.20.020; Title 17 table of contents) .
• Where to find the major rules:
  • Zoning map and district list: § 17.20.020 (Table 2‑1 referenced in the code) .
  • Allowable uses & permit level (P / MUP / UP / S): § 17.22.020 and Tables 2‑2 / 2‑3 (tables included as attachments to Title 17) .
  • District numeric standards (setbacks, site coverage, heights, densities): Chapter 17.24 and Table 2‑4 / zone tables (e.g., CD, CG, OSC, NL) (§ 17.24.010; § 17.24.020; zone tables) .
  • Citywide site‑planning rules (build‑to lines, setbacks, height measurement, lighting, fences): Chapter 17.30 (§ 17.30.010; § 17.30.020; § 17.30.040) .
  • Use‑specific rules (ADUs, cottage housing, mobilehome parks, cannabis, etc.): Chapter 17.42 (see § 17.42.125, § 17.42.170, § 17.42.200 for examples) .
  • Parking and loading: Chapter 17.36 is the controlling chapter for parking rules (§ 17.24.030 refers parking to Chapter 17.36) — look up Chapter 17.36 for space requirements and special rules (§ 17.24.030; Chapter 17.36) .
  • Permit filing, environmental review and decision rules: Chapters 17.60 (application filing), 17.62 (permit review and decisions), 17.64 (time limits / implementation) (§ 17.60.010; § 17.62.010; § 17.64.010) .

(For the topic pages used on this overview, see the Land Use landing link above — the first mention of “Land Use” here links to the city’s menu: Cotati Land Use.)

Zoning district families

Cotati organizes zones to express a rural‑to‑urban transect and to implement the General Plan; the base districts and special districts are described in § 17.20.020–030 and shown in Table 2‑1 (§ 17.20.020; § 17.20.030) .

Key district families (representative list with where they live in the code):

• Residential transect / neighborhood zones — RR‑1.5, RR‑1.0, RVL‑0.66, RVL‑0.5, NL (Neighborhood Low), NM (Neighborhood Medium), NU (Neighborhood Urban); minimum parcel sizes, minimum/maximum densities and setbacks are in Table 2‑4 and the zone tables in Chapter 17.24 (§ 17.24.020; Table 2‑4) .
• Corridor / mixed‑use commercial zones — CE (East Cotati Ave corridor), CG (Gravenstein corridor), CD (Downtown Commercial), CA (Commerce Ave / Downtown SPD frontage) — their purposes and allowed mixes are described in § 17.20.030 and zone tables; CD downtown rules invoke the La Plaza specific plan (§ 17.20.030; CD description) .
• Higher‑intensity / transit‑oriented zones — TOC (Transit Oriented Community) and SW / SWSP (Santero Way / Santero Way Specific Plan) — density ranges and FAR rules for these districts are in § 17.20.030 (TOC base density 25–35 du/acre, commercial FAR 1.0–3.0) (§ 17.20.030) .
• Industrial / commercial‑industrial — CI (Commercial/Industrial) — permitted uses and industrial conditions are in § 17.20.030 and the CI zone table in Chapter 17.24 (§ 17.20.030; § 17.24.030) .
• Public / special purpose & overlays — PF (Public Facility), CP (Coordinated Planning overlay), MHP / MHP‑S (Mobilehome Park overlays), SPD (Downtown Specific Plan zoning district), SPSW (Santero Way Specific Plan zoning district), and PUD (existing planned unit developments; no new PUDs permitted) — these are in Chapter 17.28 (§ 17.28.010–070) .

Note the code uses zone “tables” for each district (setbacks, site coverage, height and frontage types) in Chapter 17.24; those numeric standards are the first place to look for dimension rules for any parcel (§ 17.24.010; zone tables) .

Citywide development standards

The code layers district numbers with citywide rules. Below are the controlling places to find each item and several representative local numbers you will see in the tables.

• Setbacks and build‑to lines — Chapter 17.30 explains build‑to‑lines, allowed encroachments, and exceptions (§ 17.30.020) . Individual zone tables then set minimum setbacks (for example, OSC front 30 ft; OSR front 30 ft; RR front 25 ft; many residential zones list interior side setbacks of 5–20 ft depending on zone) (see the OSC/OSR/RR/NL/RVL tables in Chapter 17.24) (§ 17.24.030; zone tables) .
• Height limits & measurement — Chapter 17.30 contains height measurement rules and exceptions (§ 17.30.040) and the zone tables give the maximum heights by district (typical maximums: 28–40 ft for many residential/commercial zones; 35 ft in many commercial districts; some districts permit 50 ft or higher with a use permit) (§ 17.30.040; zone tables) .
• Lot coverage / FAR — zone tables in Chapter 17.24 specify maximum site coverage and, in mixed‑use/transit areas, F.A.R. requirements (for example TOC and SW reference F.A.R. min 1.0 / max 3.0 in § 17.20.030) (§ 17.24.030; § 17.20.030) .
• Parking — the city’s parking/ loading rules are centralized in Chapter 17.36; many use‑specific sections and ADU rules reference Chapter 17.36 for required spaces (see ADU provisions that require one parking space per ADU except where state law provides an exemption) (§ 17.24.030; Chapter 17.36; § 17.42.170) . For a summary of parking policy and calculation rules see the Parking menu: Cotati Parking.
• Landscaping, screening and signs — landscaping standards and screening are in Chapter 17.34 and sign controls are in Chapter 17.38 (§ 17.24.030 (references); Chapters 17.34 & 17.38) . See the sign menu: Cotati Signage and landscaping menu: Cotati Landscaping and Screening.
• Design & frontage types — Chapter 17.24.040 explains allowed building frontage types (shopfront, gallery, porch, forecourt, etc.) and Chapter 17.24.050 addresses downtown/corridor frontages and facades (useful in the CD downtown zone) (§ 17.24.040; § 17.24.050) .

(When you want numerical standards quickly, open the specific zone table in Chapter 17.24 first — for example the CD zone table shows build‑to lines and maximum 35 ft standard height or 50 ft with a use permit) (§ 17.24.030; CD table) .

Specific plans & overlays

• Downtown and Santero Way specific plans — the SPD (Downtown Specific Plan) and SPSW (Santero Way Specific Plan) are implemented by zoning districts SPD and SPSW; for those areas the specific plan controls allowable uses and development standards (see § 17.28.050 and § 17.28.060) (§ 17.28.050; § 17.28.060) .
• Coordinated planning & master plan overlays — the CP (Coordinated Planning) overlay requires a master plan before most permits will be issued for properties inside the overlay; the CP overlay process and the master‑plan findings/procedures are in § 17.28.020 (§ 17.28.020) .
• Mobilehome and other overlays — MHP / MHP‑S (mobilehome park overlays), PF (public facility), and other overlays are in Chapter 17.28; the code lets overlays append to the primary district and set additional requirements (Chapter 17.28; § 17.28.010 et seq.) (§ 17.28.010) .
• PUDs — existing planned unit developments remain regulated under their original ordinances or by reverting to underlying district standards; new PUDs are not permitted (§ 17.28.070) .

(Find an overview of overlays here: Cotati Overlay Districts.)

Building permits & review

• Permit pre‑check and sequencing — the code requires that any planning permit required by § 17.22.020 be obtained before issuing grading, building, or other construction permits (see the requirement that planning permits are prerequisites) (§ 17.22.020 (establishment & permit requirement)) .
• Zoning clearance — routine verification that a proposed use/structure complies with rules is a zoning clearance administered by the director (§ 17.62.020) .
• Discretionary reviews — design review and use permits / minor use permits are the primary discretionary tools; the permit procedures, decision authorities and appeal paths are in Chapters 17.60–17.64 and 17.62 (§ 17.62.040; § 17.62.050; § 17.60.010) . The planning director has authority to approve certain ministerial matters and minor variances; major decisions flow to the planning commission or city council (§ 17.80.060) .
• Application contents and environmental review — Chapter 17.60 sets application filing, concurrent processing, and environmental review references; master plans and major projects require the detailed plans listed in § 17.28.020(F) and environmental review as required by § 17.60.080 (§ 17.60.030; § 17.60.080; § 17.28.020(F)) .
• Building codes & inspections — building permits are still governed by the California building code and local enforcement; see the local building official’s role and the state code (the city enforces the California Building Standards Code) — consult the city’s building division and the state code: California Building Standards Code (§ 17.22.020 references and building permit prerequisites) .

For design and discretionary thresholds see the design review menu: Cotati Design Review.

State housing law in Cotati

How Cotati’s code integrates state housing laws:

• ADUs / JADUs — Cotati has an ADU/JADU chapter that mirrors state ADU principles and sets local numeric limits and locational rules (minimum setbacks, maximum sizes, parking requirement of one space per ADU except where state law provides an exemption, no parking for JADUs, owner‑occupancy rules, and size caps such as 850–1,000 sq ft depending on bedrooms and a max detached ADU of 1,200 sq ft) (§ 17.42.170; § 17.42.180) . See the city ADU page: Cotati ADUs.
• Density bonus — Cotati’s density bonus chapter (Chapter 17.32) implements state density bonus entitlement rules and ties additional local incentives to projects that meet categorical affordability or objective design standards; the chapter expressly defers to state law for bonus calculations (§ 17.32.030) .
• Objective design standards & ministerial review — the downtown specific plan and some specific plan districts incorporate objective design standards and streamlined ministerial review for qualifying residential development per state laws (see the CD/DSP and SPD language in § 17.28.050 and § 17.20.030) (§ 17.28.050; § 17.20.030) .
• SB 9 (ministerial two‑unit splits / lot splits) — explicit SB 9 (two‑unit/ministerial lot split) implementation language was NOT located in the retrieved Title 17 materials provided. The code does include subdivision rules (Article 7, Chapters 17.70–17.70.100) and ministerial permit processes (Chapter 17.62 / § 17.62.020 zoning clearances), but there is no explicit SB 9 cross‑reference in the retrieved excerpts — verify current SB 9 implementation with the Community Development Department (Not found in retrieved materials; verify with the jurisdiction) (§ 17.62.020; Article 7 references) .
• Using the state ADU rules and state density bonus — Cotati’s ADU and density‑bonus chapters explicitly incorporate or defer to state law where noted; always compare a proposed ADU or bonus request to both the local sections (Chapter 17.42; Chapter 17.32) and the current state statutory text or guidance (California ADU law; California housing laws) (§ 17.42.170; § 17.32.030) .

Practical orientation — how to use this code to get a quick answer

• I want to know whether a use is allowed: consult Table 2‑2 / 2‑3 in Chapter 17.22 and the permit column, then confirm numeric standards for the district in Chapter 17.24 and site rules in Chapter 17.30 (§ 17.22.020; § 17.24.030; § 17.30.010) .
• I want to know setbacks or height on my lot: look up your zoning district on the official zoning map (Chapter 17.20) then open the district table in Chapter 17.24 to see front/side/rear and height numbers (§ 17.20.020; § 17.24.020) .
• I want to build an ADU: read Chapter 17.42 (ADU/JADU) for size limits, setbacks and parking and check state ADU exemptions that may remove parking or other local conditions (§ 17.42.170; state ADU law reference) .
• I want to convert a downtown commercial property to mixed uses: check the CD / SPD provisions (Chapter 17.24 CD table and Chapter 17.28.050 SPD) and the downtown specific plan rules that may require design review or allow ministerial review if objective standards are met (§ 17.24.030; § 17.28.050) .

Information gaps and verification points

• SB 9 / ministerial two‑unit lot split language: Not found in the retrieved materials. If SB 9 implementation or a specific ministerial ministerial-lot‑split process matters for your project, verify with the Community Development Department and the most recent ordinances (Not found in retrieved materials; verify with the jurisdiction) (§ 17.62.020 referenced for ministerial processes) .
• Any post‑2026 emergency or temporary ordinance changes: the retrieved code shows many recent ordinances through early 2026; confirm the city website for any superseding changes or emergency/administrative updates (verify with the jurisdiction) — chapters to watch are Title 17 updates and Chapter 17.60 (application filing) (§ 17.60.010) .

Source References

• Cotati Municipal Code, Title 17 — Land Use (zoning map, district lists and tables) — § 17.20.020; § 17.20.030 . Downloaded from https://ecode360.com/CO4398 (Title 17 material in the uploaded file) .
• Chapter 17.24 — Zoning district development standards (zone tables and numeric standards) — § 17.24.010; § 17.24.020; zone tables (CD, CI, OSC examples) .
• Chapter 17.30 — Standards for all development (build‑to‑lines, setbacks, height measurement) — § 17.30.010; § 17.30.020; § 17.30.040 .
• Chapter 17.22 — Allowable land uses and permit requirements (Tables 2‑2 / 2‑3) — § 17.22.020; § 17.22.030 .
• Chapter 17.28 — Special purpose & overlay zones (CP, MHP, SPD, SPSW, PUD) — § 17.28.010; § 17.28.020; § 17.28.050; § 17.28.060; § 17.28.070 .
• Chapter 17.42 — Standards for specific land uses including ADUs/JADUs, cottage housing and mobilehome parks — § 17.42.125; § 17.42.170; § 17.42.200 .
• Chapter 17.32 — Density bonus and affordable housing incentives (state law interaction) — § 17.32.030 .
• Chapters 17.60–17.64 and 17.62 — Permit application filing, review, zoning clearance, design review, use permits, variances — § 17.60.010; § 17.62.020; § 17.62.040; § 17.62.050 (§ 17.60–17.64 table of contents) .
• Administrative & decision authority (planning director, commission) — § 17.80.060 (planning director powers; director authority for zoning clearances and limited ministerial approvals) .