Cotati — Development Standards

Last reviewed: July 1, 2026

Overview

This page summarizes the City of Cotati zoning development standards that control setbacks, building height, lot coverage, density and related site-planning controls found in the Cotati land use / zoning ordinance. It is limited to the development-standards rules in the local code (build-to lines, setbacks, coverage, height limits, etc.) and interprets where those numbers apply; do not treat this as a permit checklist or building-code (Title 24) guidance. The primary ordinance locations are § 17.24.030 (zoning district site planning and building standards), § 17.30.020 (build-to lines and setbacks) and § 17.30.040 (height measurement and exceptions) in the Cotati Code.

Note: links to related pages are embedded on first natural mention for quick navigation: the city's main zoning and land use pages, parking, design review, overlay districts, ADUs, and the California Building Standards Code.

How this page is organized

• District-by-district breakdown of the most commonly used zoning districts in Cotati (purpose, typical uses, key dimensional standards and where the district applies).
• A quick-reference table of decision-relevant standards (setbacks, heights, lot coverage, density where given).
• A short applicant checklist, risks & ambiguities to verify, a plain-English homeowner summary, and source citations.

All numeric standards below are taken from the Cotati zoning tables and implementing sections; each number is followed by the controlling code section (for example, § 17.24.030) and citation to the retrieved ordinance material.

RR — Rural Residential

• Purpose & typical uses: RR covers low‑intensity, rural residential lots (single‑family homes, agricultural accessory uses). See purpose language in the zoning district descriptions.
• Key dimensional standards (apply at property line; exceptions per § 17.30.020): Front 25 ft., Side (each) 10 ft., Street‑side 20 ft., Rear 20 ft.; Garage setback 10 ft. (from street‑facing façade). Main structure height 28 ft.. Lot coverage rules scale with parcel size (e.g., 30% on a 1/2‑acre parcel reduced by 10% for each additional 1/2‑acre to a minimum of 10%) — see § 17.24.030.

NL — Neighborhood Low Density

• Purpose & typical uses: NL is for low‑density neighborhood residential contexts (single‑family and small multiunits).
• Key dimensional standards: Front 20 ft., Side (each) 5 ft. (no side separation required between rowhouse units), Street‑side 10 ft., Rear 20 ft.; Garage 10 ft. back from street‑facing façade. Main structure height 28 ft.; maximum site coverage 40%. See § 17.24.030.

NM — Neighborhood Medium Density

• Purpose & typical uses: NM supports a variety of housing types (small lot single‑family, duplexes, townhouses, apartments) with a maximum density of 10 dwelling units per acre.
• Key dimensional standards: Front 15 ft., Side (each) 5 ft. for certain structures (and up to 10 ft. for 2‑story multifamily walls), Street‑side 10 ft., Rear 15 ft.; Garage 10 ft. back from street‑facing facade. Main structure height 28 ft.; maximum coverage 55% in many NM subareas. See § 17.24.030.

NU — Neighborhood Urban

• Purpose & typical uses: NU is the high‑density neighborhood zone, intended for multifamily and mixed‑use; maximum density 15 dwelling units per acre.
• Key dimensional standards: Typical front build‑to 15 ft. (or build‑to lines), Side interior 5–10 ft. depending on use/height, Street‑side 10 ft., Rear 10 ft.; Main structure height often 28 ft. or per the NU-specific table (see § 17.24.030). Lot coverage and unit size limits for multifamily units are also specified in that table.

CD — Downtown Commercial

• Purpose & typical uses: CD (Downtown Commercial) governs the downtown core and corner frontages; primarily retail, services, and mixed use with pedestrian orientation.
• Key dimensional standards: Build‑to lines and front/street‑side build‑to often 0 ft. (special 15 ft. exceptions on named streets per La Plaza Specific Plan). Side interior 5–10 ft. depending on use; Rear 10 ft.; Maximum height 35 ft. (up to 50 ft. with use permit or 45 ft. per certain exceptions). Maximum site coverage 100% (to allow contiguous downtown building frontages). See § 17.24.030.

CE — East Cotati Avenue Corridor (Mixed Use)

• Purpose & typical uses: CE is a mixed‑use corridor zone along East Cotati Avenue (retail, offices, small restaurants, mixed residential). Residential density where allowed: up to 15 du/acre.
• Key dimensional standards: Front/street‑side build‑to 10 ft. (build‑to lines apply), Side interior 10 ft. when abutting residential (none otherwise), Rear 10–20 ft. depending on adjacency; Maximum height typically 35 ft. (up to 45 ft. or 45 ft. per exceptions; some zones allow 45 ft. with conditions), maximum site coverage 80%. See § 17.24.030.

CG — Gravenstein Corridor (Commercial)

• Purpose & typical uses: CG covers Gravenstein Highway frontage (regional commercial, restaurants, some office uses); mixed‑use allowed.
• Key dimensional standards: Front/street‑side build‑to 0 ft. (with a 30 ft. build‑to along the Gravenstein frontage from the highway ROW), Side interior 10 ft. abutting residential, Rear 10–20 ft. depending on adjacency; Height 35 ft. (up to 50 ft. with a use permit or 45 ft. per exceptions); site coverage 80%. See § 17.24.030.

CI — Commercial Industrial

• Purpose & typical uses: CI is for light industrial and industrial/commercial uses (manufacturing, assembly inside buildings, distribution).
• Key dimensional standards: Front 20 ft., Side interior 20 ft. when abutting residential (none otherwise), Street‑side 20 ft., Rear 30 ft.; Maximum height 40 ft.; site coverage 80%. See § 17.24.030.

TOC — Transit‑Oriented/Specific Corridor

• Purpose & typical uses: TOC zones are higher‑intensity/transit‑oriented mixed‑use blocks with reduced setbacks to support pedestrian density.
• Key dimensional standards: Front 0–10 ft., Side interior 10 ft. (none required except abutting residential), Rear 10–20 ft. depending on adjacency; Heights 45 ft. (up to 55 ft. with a use permit in some TOC areas); site coverage 100%. See § 17.24.030.

SW — Southwest / Special Zone

• Purpose & typical uses: SW is a special‑planning zone with mixed residential frontage types and a higher allowable coverage.
• Key dimensional standards: Front 0–10 ft., Side interior 10 ft., Rear 10 ft., Height 40 ft., site coverage 75%. See § 17.24.030.

Notes on where these rules live and how to interpret them:

• The zoning district tables (the per‑district numerical standards above) live in § 17.24.030 and accompanying figures and tables. The code repeatedly says "See § 17.30.020 for exceptions" to the listed setbacks (e.g., allowed encroachments, porch/stoop exceptions). Always check § 17.30.020 for build‑to line rules and encroachments.
• Height measurement rules and special height exceptions (e.g., increased height by use permit, silhouette/step‑back exceptions) are in § 17.30.040; consult that section for how "height" is measured and when a different maximum applies.
• Many zones reference additional, zone‑specific standards (for example, downtown façade/frontage rules in § 17.24.050, cottage housing rules in § 17.42.125, and accessory‑structure rules in § 17.42.160).

Quick-reference standards table (selected districts)

(These are the decision‑relevant highlights; all setbacks say "See § 17.30.020 for exceptions" — porches, stoops, awnings and other encroachments are governed there.)

Important: Floor area ratio (FAR) numbers are not listed in the zone tables returned by the retrieved materials. For FAR: Not found in retrieved materials. Verify with the jurisdiction.

How the standards interact (practical guidance)

• Build‑to lines vs setbacks: Several commercial/downtown zones use build‑to lines instead of a conventional front setback to create continuous street frontage — follow the zone’s build‑to requirement first, then consult § 17.30.020 for allowable encroachments such as porches or forecourts. § 17.24.030 and § 17.30.020 control this.
• Height and exceptions: Base height limits are listed in the district tables, but § 17.30.040 specifies how height is measured and when exceptions (use permits, stepbacks, or special corridors) allow taller buildings. If the project seeks a height greater than the listed maximum, expect a use permit in many commercial zones.
• Lot coverage is reported as a percentage of site area for each zone; cottage housing and mobilehome park rules provide specialized ways to count coverage (see § 17.42.125 and § 17.42.110).
• Density: Where the code lists maximum dwelling units per acre (for NM, NU, etc.), that is the control for residential intensity; mixed‑use parcels often have separate standards tied back to § 17.24.030 and the General Plan.

When you see a requirement that conflicts between articles, remember the code’s conflict rule: Article 3 controls over Article 2; Article 4 controls over Articles 2 and 3; and Article 5 controls over Articles 2, 3 and 4 (see § 17.30.010(B)).

Checklist

• Confirm zoning district for the parcel (see Cotati Zoning) and applicable overlay(s) (overlay districts). Verify district purpose and allowed uses per § 17.20.020 and § 17.24.030.
• Verify build‑to line or front/setback requirement for the exact lot and any exceptions in § 17.30.020 (porches, stoops, encroachments).
• Confirm side and rear setbacks for the zone listed in § 17.24.030 (and whether abutting residential changes the requirement).
• Confirm maximum building height and how height is measured in § 17.30.040; check for available use‑permit height exceptions.
• Check maximum site coverage / lot coverage in the district table in § 17.24.030 and special rules for cottage housing or mobilehome parks (§ 17.42.125, § 17.42.110).
• Review accessory‑structure and ADU provisions (see § 17.42.160 and cottage housing rules) and compare to state ADU limits; also consult the city ADU guidance ADUs. Not all local ADU details are in the same table; verify.
• Confirm parking requirements in Chapter 17.36 and on the city parking page; parking can affect site layout and coverage.
• If your parcel is in a downtown or corridor frontage area, expect façade and frontage standards per § 17.24.050 and possible design review (design review).

Risks & Ambiguities

Plain-English Summary

Cotati’s zoning tables list the measurable site standards you must follow: how far buildings must sit from property lines (front, side, rear or build‑to lines), how tall they can be, and how much of your lot can be covered by buildings or paving — those numbers appear in each zone’s table in § 17.24.030, with exceptions and encroachments explained in § 17.30.020 and height rules in § 17.30.040. Always verify parcel‑specific overlays, design‑review triggers, and any use‑permit pathways for larger buildings.

Source References

• Cotati Zoning district tables and development standards, § 17.24.030 (district site planning and building standards). — eCode360 copy: https://ecode360.com/CO4398
• Standards for all development and land uses; build‑to lines and setbacks, § 17.30.010 / § 17.30.020 (Build‑to lines and setbacks).
• Height measurement and exceptions, § 17.30.040.
• Zoning district descriptions / allowable densities (e.g., NM, NU density caps), § 17.20.030 and cross‑references to § 17.24.030.
• Cottage housing and accessory building standards (setbacks, lot coverage), § 17.42.125.
• Mobilehome park standards and setbacks, § 17.42.110 / § 17.42.125.

If you need the raw ordinance PDFs or the city’s zoning map called out to a parcel, request the specific parcel APN and I will point to the exact table and applicable overlays; for legal confirmation, always verify with Cotati Planning staff.

Retrieved passages

• Cotati Zoning Code (Section 17.24.040.) High relevance show source text
• Cotati Zoning Code (Section 17.30.020) High relevance show source text
• Cotati Zoning Code (§ 17.24.030) High relevance show source text
• Cotati Zoning Code (§ 17.24.040.) High relevance show source text
• Cotati Zoning Code (Section 17.42.160) High relevance show source text
• Cotati Zoning Code (Section 17.30.020) High relevance show source text
• Cotati Zoning Code (§ 17.24.030) High relevance show source text
• Cotati Zoning Code (Section 17.24.050) High relevance show source text

Cited sections

• Cotati Zoning district tables and development standards, **§ 17.24.030** (district site planning and building standards). — eCode360 copy: (§ 17.24.030)
• Standards for all development and land uses; build‑to lines and setbacks, **§ 17.30.010** / **§ 17.30.020** (Build‑to lines and setbacks). (§ 17.30.010)
• Height measurement and exceptions, **§ 17.30.040**. (§ 17.30.040)
• Zoning district descriptions / allowable densities (e.g., **NM**, **NU** density caps), **§ 17.20.030** and cross‑references to **§ 17.24.030**. (§ 17.20.030)
• Cottage housing and accessory building standards (setbacks, lot coverage), **§ 17.42.125**. (§ 17.42.125)
• Mobilehome park standards and setbacks, **§ 17.42.110** / **§ 17.42.125**. (§ 17.42.110)
• Cotati_ZoningCode.md

• Official Cotati code library