Cotati — Signage

Last reviewed: July 1, 2026

Overview

Cotati controls signs through Chapter 17.38 of its Municipal Code (the Signs chapter). The rules set when a sign permit or master sign plan is required, what sign types are allowed or prohibited, numeric area/height limits by zoning district, and detailed design and safety standards (lighting, public right‑of‑way, maintenance). See the permit triggers in § 17.38.030 and the district tables in § 17.38.060 for the baseline requirements.

The material below interprets and organizes the Cotati sign rules (Chapter 17.38) into practical, district‑by‑district guidance. Every requirement below is grounded in the Cotati ordinance and cites the controlling §.

Key citywide rules (short list)

• Sign permits and/or a master sign plan are required for most permanent or structural sign changes: § 17.38.030.
• The chapter applies to all signs in all zoning districts and does not regulate sign message content: § 17.38.020.
• Certain temporary and nonstructural signs are exempt from sign permits but must still meet rules in § 17.38.035.
• Prohibited sign types include animated/moving/electronic displays, internally‑illuminated cabinet (can) signs, pole/pylon signs or other freestanding signs over 6 feet, roof signs, and off‑site billboards except where specifically allowed: § 17.38.040.
• Lighting, materials, and maintenance standards are in § 17.38.050 (illumination limits, lamp wattage, energy‑efficiency, upkeep).

Note: installation may also require a building permit; confirm with the Building Division and the California Building Standards Code. See the Building Code link below.

District-by-district breakdown

Note: Cotati organizes sign limits by district tables in § 17.38.060 (Table 3‑11 for Low Density/Neighborhood zones; Table 3‑12 for Mixed‑Use/Commercial zones). The quotes below paraphrase and interpret those tables and related standards; the controlling § citations follow each item.

Low Density and Neighborhood zones — OSC, OSR, RR, RVL, NL, NM, NU

• Purpose / context: residential and neighborhood commercial contexts where sign scale is small and pedestrian scale is prioritized. See the Low Density table in § 17.38.060(A).
• Typical permitted sign types: one wall sign or one freestanding sign per street frontage, plus small incidental signs (address, etc.) per § 17.38.060(A).
• Key dimensional standards:
  • Wall signs are typically limited to placement below the roof edge; freestanding signs are low‑profile (see the table text in § 17.38.060(A) for the exact numeric caps).
  • Temporary/noncommercial signs in residential zones: aggregate maximum area is twelve square feet, maximum height six feet, and limited duration rules apply (see § 17.38.035(C)).
• Where it applies: parcels zoned OSC, OSR, RR, RVL, NL, NM, and NU — see the district table in § 17.38.060(A).
• Practical note: even small signs must meet the chapter’s lighting, maintenance, and public‑right‑of‑way rules (see § 17.38.050).

Mixed‑use corridors & commercial districts — CG, CE, SPD, CD, CI

• Purpose / context: commercial corridors and centers where signs identify businesses to motorists and pedestrians; the rules balance visibility with aesthetic controls. See § 17.38.060(B).
• Typical permitted sign types: wall signs, projecting signs, freestanding/monument signs (in limited height), awning signs, window signs, second‑floor directory signs, and limited temporary commercial signage. See § 17.38.060(B) and the sign‑type standards in § 17.38.070.
• Key dimensional standards and formulas (see table and supporting text in § 17.38.060(B)):
  • Sign area is commonly calculated as a function of building frontage: for many commercial frontages the base allowance is 1 sq. ft. per linear foot of primary building frontage, plus 0.5 sq. ft. per linear foot of secondary frontage for multi‑tenant centers, with minimums and caps (each use has at least 25 sq. ft. allowed; no more than 100 sq. ft. per use in many cases). The district table shows the exact computation and caps — see § 17.38.060(B).
  • Freestanding signs: maximum height generally limited to 6 feet (except limited “freeway‑oriented” exceptions) and multiple freestanding signs must be separated by 75 feet (waiver possible). § 17.38.050(C) and § 17.38.070(C).
  • Wall signs: the largest wall sign normally may not exceed 7% of the area of the building façade on which it is mounted (including windows/doors); projection of wall signs limited to 12 inches. § 17.38.070(H).
• Where it applies: parcels in CG, CE, SPD, CD, and CI zones per § 17.38.060(B).
• Practical note: banners/pennants and other temporary commercial signs are allowed in these districts under specific time limits and bonding requirements — see § 17.38.070(G).

Industrial / General (light/heavy) — IG

• Purpose / context: industrial sites with larger lots and orientation to vehicle traffic; certain temporary/off‑site signs may be addressed separately. § 17.38.070(G) allows some off‑site sign approvals in IG subject to strict findings.
• Typical permitted sign types: similar sign types to commercial zones but with careful limits on freestanding height (6 ft typical limit) and on off‑site signs except where expressly allowed. § 17.38.050(C) and § 17.38.070(G).
• Where it applies: parcels zoned IG per the off‑site sign subsections.

Special cases & overlays

• Freeway‑oriented signs: a use permit can allow a building‑mounted, freeway‑facing sign in CG or SPD on parcels near Highway 101; the director’s approval is limited to parcels within 500 ft (east side) or 1,000 ft (west side) of the freeway property line and requires specific findings: § 17.38.070(D).
• Murals: allowed in commercial/industrial districts subject to design review and findings that they are visually compatible: § 17.38.070(E). Design review may be required; see the city’s design review rules.
• Off‑site (receiving‑parcel) signs: off‑site signs are generally prohibited but may be approved in CE, CG, CD, SPD, IG, CI under the limited conditions in § 17.38.070(G)(2) (only one off‑site freestanding sign, max 4 sq. ft area and 6 ft height).
• Overlays and historic districts: the Signs chapter defers to design review and overlay controls where applicable; check the local overlay standards and the historic preservation program for additional limits. Verify overlay requirements with the planning department and the city’s overlay rules. Not all overlay specifics are listed in Chapter 17.38; see the overlay pages. (Verify with the jurisdiction.)

The most decision‑relevant standards (quick reference table)

Checklist

• Determine sign type and whether the sign is covered by an exemption in § 17.38.035.
• Confirm zoning for the parcel and applicable district table in § 17.38.060 (use frontage measurement to compute allowed area).
• Prepare scaled sign elevation and site plan showing distances to property lines, curb, and any sight triangles (to confirm 75 ft separation for freestanding signs or need for waiver). § 17.38.070(C).
• Verify illumination plans comply with § 17.38.050(I) (no blinking; shielded, external lighting; lamp wattage).
• If sign projects over the public right‑of‑way, secure city encroachment permit in addition to sign permit. § 17.38.050(D)(2).
• If a banner permit is requested, include proposed dates and be prepared to post a bond per § 17.38.070(G)(1).
• Check whether design review or additional overlay/historic approvals apply (murals require design review; freeway signs need a use permit). § 17.38.070(E,D).
• If structural changes are involved, obtain building permit and confirm compliance with the California Building Standards Code. § 17.38.030(A)(2).
• Confirm nonconforming sign rules if updating an older sign: § 17.38.080.

(First mention links: check parking, development standards, design review, overlays, historic preservation, nonconforming uses, variances, ADUs, building code where the page references those topics.)

• Parking link: See how signs may interact with parking layouts when locating freestanding or wayfinding signage.
• Development standards link: Sign area and placement interact with other site metrics in development standards.
• Design review link: Murals and some sign plans may require design review.
• Overlay districts link: Check overlay districts for special sign rules or design overlays.
• Historic preservation link: Consult historic preservation when the property is in a designated historic area.
• Nonconforming uses link: Rules for older signs are in nonconforming uses.
• Variances link: If you cannot meet dimensional requirements, see variances and exceptions.
• ADUs link: Signs rarely apply to ADUs but verify for accessory commercial/office uses.
• Building code link: Structural attachment and electrical work must meet the California Building Standards Code.

Risks & Ambiguities

Plain‑English Summary

Cotati requires a sign permit for most new or changed signs and sets clear numeric limits by zone (small, pedestrian‑scale signs in residential/neighborhood zones; larger allowance tied to frontage in commercial districts). Animated/electronic, pole/pylon over 6 ft, and roof signs are generally forbidden; special approvals are required for freeway‑facing or off‑site signs. Follow the site‑specific district table in § 17.38.060 and the sign‑type rules in § 17.38.070; lighting, maintenance, and nonconforming sign rules are in § 17.38.050, § 17.38.090, and § 17.38.080.

Source References

• Cotati Municipal Code, Chapter 17.38 — Signs: § 17.38.010 through § 17.38.110 (Sign purpose, applicability, permit requirements, exemptions, prohibitions, general requirements, zoning district sign standards, specific sign‑type standards, nonconforming signs, enforcement). Source (city codified text): https://ecode360.com/CO4398
• Cotati Municipal Code — Zoning district sign standards and tables: § 17.38.060 (Table 3‑11 and Table 3‑12). Source: https://ecode360.com/CO4398
• Cotati Municipal Code — Standards for specific sign types: § 17.38.070 (A‑boards, awnings, freestanding, projecting signs, temporary signs, mural rules, off‑site signs, freeway signs). Source: https://ecode360.com/CO4398
• Cotati Municipal Code — Prohibited signs: § 17.38.040. Source: https://ecode360.com/CO4398
• Cotati Municipal Code — General sign requirements, lighting, materials, and maintenance: § 17.38.050. Source: https://ecode360.com/CO4398
• Cotati Municipal Code — Nonconforming signs and enforcement: § 17.38.080 and § 17.38.090. Source: https://ecode360.com/CO4398

Retrieved passages

• Cotati Zoning Code (chapter are) High relevance show source text
• Cotati Zoning Code (Section 17.38.050) High relevance show source text
• Cotati Zoning Code (Section 17.38.070) High relevance show source text
• Cotati Zoning Code (§ 17.38.070) High relevance show source text
• Cotati Zoning Code (Section 17.38.070) High relevance show source text
• Cotati Zoning Code (§ 2) High relevance show source text
• Cotati Zoning Code (Section 17.38.070) High relevance show source text
• Cotati Zoning Code (Section 17.38.050) High relevance show source text

Cited sections

• Cotati Municipal Code, Chapter 17.38 — Signs: **§ 17.38.010** through **§ 17.38.110** (Sign purpose, applicability, permit requirements, exemptions, prohibitions, general requirements, zoning district sign standards, specific sign‑type standards, nonconforming signs, enforcement). Source (city codified text): (Chapter 17.38)
• Cotati_ZoningCode.md

• Official Cotati code library