Local zoning · Windsor

Windsor — Signage

Q: Can I put a portable A‑frame sign out in front of my shop?

Nonresidential uses may have one portable sign subject to limits: max 6 sq ft , max 4 ft height, location restrictions (only in front of the served use, not obstructing accessible paths), and display only during business hours; see § 17.36.060.B.10 .

Q: What are the rules for monument signs (size, height, landscaping)?

Monument signs must meet the zone‑specific caps in § 17.36.100 and the monument‑specific standards (setbacks, max height often 6 ft , landscape area equal to 2× the sign face, minimum spacing between monuments) in § 17.36.090.C . Confirm the numeric cap for your zone in Table 17.36‑02.

Signage under the Windsor local zoning and planning code, with the controlling citations.

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Last reviewed: July 3, 2026

Overview

This page summarizes what the Town of Windsor's zoning ordinance requires for signs (Chapter 17.36 of the Zoning Code) and pulls the most decision‑relevant rules into one place: permit triggers, prohibited and exempt signs, dimensional and illumination limits, and when a Comprehensive Sign Program or design review applies. The code's permanent sign standards are organized by zone (see § 17.36.100) and special rules (monument, wall, canopy, highway‑oriented) live in § 17.36.090. For maps and zone names consult the Town's Windsor Zoning page.

(Links you may need while reading: development standards, parking, design review, overlay districts, ADUs, and the California Building Standards Code.)

Core rules (short list)

Sign permit required for all non‑exempt signs: § 17.36.020.
Exempt signs (no permit needed but standards still apply): see § 17.36.060 (flags, nameplates, on‑site directional, construction signs, limited banners, portable signs rules, etc.).
Prohibited signs in all zones (examples): animated/flashing, inflatable, pole/pylon, roof signs, most billboards, feather/sail flags, electronic reader boards (subject to limited exceptions) — § 17.36.050.
Multi‑tenant / large sign situations trigger a Comprehensive Sign Program (required in several cases) — § 17.36.070.
Permanent sign types and numeric limits are in § 17.36.100 (Tables 17.36‑01 and 17.36‑02 — residential vs. nonresidential).
Illumination must avoid glare, blinking, or traffic confusion; internal/backlit/halo signs are limited by type and zone — § 17.36.030 and § 17.36.090.

District-by-district breakdown

Below are Windsor‑specific districts or site types that the sign code treats differently. Each subsection summarizes the sign purpose/context, the most common permitted sign types, key dimensional limits from the code, and where that district or standard commonly applies in Windsor.

Residential zones (collectively)

Purpose / context: Preserve neighborhood character and prevent visual clutter; residential sign allowances are intentionally small. § 17.36.010.
Typical permitted signs: nameplates/addresses, limited freestanding monument signs for multi‑unit developments, on‑site directional signs, temporary/noncommercial signs (yard signs). See Table 17.36‑01 (Residential Zones Permanent Sign Standards) in § 17.36.100.
Key numeric standards (highlights): resident nameplates/address signs up to 2 sq ft; temporary noncommercial signage up to 32 sq ft total in residential districts; freestanding signs generally limited to 4–6 ft height depending on type and use (see permanent sign table). § 17.36.060, § 17.36.100.
Where it applies: single‑unit and multi‑unit residential zones per Table 17.36‑01. See development standards for site‑level setbacks that affect sign placement.

BCMU — Boulevard Mixed‑Use (named in the code)

Purpose / context: Main‑street / mixed‑use corridors where signage must support wayfinding and a pedestrian scale. See § 17.12.070 (BCMU design standards) and § 17.36.100 (sign standards by zone).
Typical permitted signs: wall signs, awnings/valance text, small monument signs for centers, coordinated multi‑tenant signage via a Comprehensive Sign Program. § 17.36.090, § 17.36.070.
Key dimensional standards: wall sign allowance is measured per linear foot of building frontage (standard is 1 sq ft per linear foot for ground floor uses; reduced for upper floors) and window signs are limited to 25% of window area. Monument/ground signs must meet setbacks and landscaping requirements in § 17.36.090. § 17.36.090.E–F, § 17.36.100.
Where it applies: BCMU parcels and other downtown/frontage corridors; consult Windsor Zoning map.

Multi‑tenant shopping centers / “Shopping Center” sites

Purpose / context: Multiple businesses on one parcel require coordinated signage to avoid clutter and serve customers. § 17.36.070 (Comprehensive Sign Program) and § 17.36.100.
Typical permitted signs: wall signs per tenant, one monument sign per street frontage for a center, directory signs in parking/entry. Monument area and height caps apply (e.g., center monuments often limited to 60 sq ft and 6 ft height for shopping center fronts; see table). § 17.36.090.C and Table 17.36‑02.
Key dimensional standards: monument signs set back 10 ft from property or ultimate ROW in many cases; minimum spacing between adjacent monuments typically 75 ft unless waived. Landscaping equal to 2× the sign face area required at the base. § 17.36.090.C.

Business Park

Purpose / context: Campus‑style commercial/office parks with larger lots and coordinated signage. See Table 17.36‑02 and § 17.36.100.
Typical permitted signs: one monument at park entrance (often much larger than single‑store monuments—business park monuments can be allowed up to 175 sq ft per code table for business park entries). § 17.36.100.
Key dimensional standards: one park sign per street entrance; specific caps and landscaping requirements in § 17.36.100 and the monument standards.

Industrial zones

Purpose / context: Signage tailored for identification and operations, but safety and aesthetic controls still apply. § 17.36.010 and § 17.36.100.
Typical permitted signs: wall signs, limited monument signs, directional and informational signage (vending machine advertising counts toward site sign area). § 17.36.100 and § 17.36.100.H.

Planned Development (PD) projects and Special Plans

Purpose / context: PD or site‑specific plans frequently set custom sign rules in their PD text; code allows PD to tailor sign standards at rezoning/approval. § 17.16.050 (PD standards) plus the sign chapter.
Typical permitted signs: negotiated in the PD approval or handled by a required Comprehensive Sign Program; standard zone caps in § 17.36.100 may be modified through PD or Conditional Use Permit. § 17.36.100.B.

Highway‑oriented parcels (adjoining US‑101 or other major arterials)

Purpose / context: Signs facing highways have distinct size/spacing allowances but require special review to protect safety and visual quality. § 17.36.070.B.4 and § 17.36.090.D (Highway‑Oriented Signs).
Typical permitted signs: highway‑oriented wall signs and monument signs, allowed via a Comprehensive Sign Program; individual letter height and logos have caps (e.g., 18 in letter height; logos 24 in). Monument highway signs have stricter area caps (50 sq ft typical) and minimum separation (100 ft). § 17.36.090.D.

Key numeric/decision table (quick reference)

Topic	What the code allows (decision‑relevant highlight)	Code Reference
Sign permit required	All non‑exempt signs require a sign permit	§ 17.36.020
Prohibited signs (examples)	Animated/flashing, roof, pole/pylon, inflatable, feather/sail, most billboards, electronic reader boards	§ 17.36.050
Temporary noncommercial signs	Residential: 32 sq ft max; Nonresidential: 64 sq ft max; maximum days per year/period limits apply	§ 17.36.060.B.12
Portable signs (nonresidential)	1 portable sign, max 6 sq ft, max 4 ft height; only during business hours	§ 17.36.060.B.10
Monument signs (shopping center)	Typical cap 60 sq ft; 6 ft height; setback 10 ft; landscaping = 2× sign face	§ 17.36.090.C and § 17.36.100
Highway‑oriented monument	Max 50 sq ft; min separation 100 ft; internal illumination allowed with CSP	§ 17.36.090.D
Wall signs (ground floor)	Typically 1 sq ft per linear foot of building frontage for ground floor uses (see table)	§ 17.36.100 / 17.36.090.E
Window signs	Max 25% of window area; max 100 sq ft per use (table exceptions)	§ 17.36.090.F and § 17.36.100
Comprehensive Sign Program required	New multi‑tenant developments ≥ 3 tenants, ≥ 5 signs proposed, or Director's determination	§ 17.36.070.B

(Always verify table details for the specific zone and use; see § 17.36.100 and its Tables 17.36‑01/02 for full per‑use, per‑zone rules.)

Information Gaps / Things not fully confirmed in the retrieved materials

Exact list of Windsor zone labels (e.g., whether the code uses R‑1, R‑2, R‑3 verbatim in Table 17.36‑01) was not extractable in full from the provided snippets; the code groups signage by "residential" and "nonresidential" in § 17.36.100, but parcel‑level zone names and the full table layout require checking the Town's official Table 17.36‑01/02. Verify with the Town. Not found in retrieved materials.
The code references some measurements and limits in tabular rows (e.g., exact monument area allowed for each nonresidential zone) that are shown partially in extracts; applicants should confirm the full table in § 17.36.100 for precise numbers. Verify with the jurisdiction.

Checklist (what an applicant must do before installing a sign)

Confirm whether the sign is exempt; if not, prepare a Sign Permit application (§ 17.36.020)
Confirm the applicable zone and read the per‑zone limits in Table 17.36‑01 or 02 (§ 17.36.100)
Measure sign area per the code's measurement rules and confirm whether backlit/internal illumination is allowed for that sign type (§ 17.36.030, § 17.36.090)
If multi‑tenant, multiple signs, or visible from US‑101, determine whether a Comprehensive Sign Program is required and prepare elevations/colors/attachment details if so (§ 17.36.070)
Check prohibited sign list (no animated/flashing, no roof signs, no pole/pylon signs, etc.) (§ 17.36.050)
If project is subject to Site Plan or design review, include sign details in that submittal (§ 17.56.020)
For directional/parking signs, confirm compliance with parking and the on‑site directional sign limits in § 17.36.060.

Risks & Ambiguities

Issue	Why it matters	What to verify
Comprehensive Sign Program triggers	Multi‑tenant and highway‑facing signs automatically require more detailed study and public review.	Confirm whether your project meets any trigger in § 17.36.070; if so, plan CSP-level drawings.
Internal vs. external illumination rules	Some zones allow internal illumination (e.g., select highway signs); others ban backlit/halo signs. Mis‑lighting can cause denial.	Verify allowed illumination for your sign type and zone in § 17.36.090 and § 17.36.030.
PD or Specific Plan overrides	A PD or Station Area/Downtown Specific Plan can set unique sign rules that override Chapter 17.36.	Check for PD text or Specific Plan rules applicable to your parcel (see § 17.16.050 and Windsor Station Area/Downtown Specific Plan citations).
Measurement ambiguity on multi‑face or 3‑D signs	Area measurement rules affect whether a sign fits the cap; different methods apply for multi‑face and 3‑D signs.	Use the sign area measurement rules in § 17.36.030 (measurement illustrations) and confirm with Planning.
Temporary sign timing limits	Temporary campaign/community signs have strict day caps and placement rules; violations lead to removal.	Confirm allowed durations and setbacks in § 17.36.060.B.12 and election related exceptions.

Plain‑English Summary

Windsor's sign rules (Chapter 17.36) require a permit for any non‑exempt sign, ban attention‑grabbing or oversized displays (no roof, pole/pylon, inflatable, or flashing signs), and set size, location, lighting, and landscaping rules by type and by zone; large multi‑tenant or highway‑visible projects must submit a Comprehensive Sign Program. Always check the per‑zone tables in § 17.36.100 and the exemptions in § 17.36.060 before designing a sign.

Source References

Town of Windsor Zoning Code, Chapter 17.36 (Sign Regulations), including: § 17.36.010, § 17.36.020, § 17.36.030, § 17.36.050, § 17.36.060, § 17.36.070, § 17.36.080, § 17.36.090, § 17.36.100. See the ordinance excerpts in the uploaded Windsor Zoning Code.
Comprehensive Sign Program requirements and triggers: § 17.36.070.
Temporary, portable, and banner sign rules: § 17.36.060 (B.8–B.12).
Monument and highway‑oriented sign numeric limits and landscaping: § 17.36.090 and § 17.36.100.
Design review applicability: Chapter 17.56 (Site Plan and Design Review).

Sources

Retrieved passages

Windsor Zoning Code (Chapter 17.58) High relevance
Windsor Zoning Code (Chapter 17.58) High relevance
Windsor Zoning Code High relevance
Windsor Zoning Code (Chapter 17.36) High relevance
Windsor Zoning Code High relevance
Windsor Zoning Code (Section 17.36.100) High relevance
Windsor Zoning Code Medium relevance
Windsor Zoning Code (Chapter 17.32) Medium relevance
Windsor Zoning Code (Section 17.36.100) Medium relevance
Windsor Zoning Code Medium relevance
Windsor Zoning Code (Section 17.36.070) Medium relevance
Windsor Zoning Code (Section 17.70.070) Medium relevance
Windsor Zoning Code (section of) Medium relevance
Windsor Zoning Code (Section 12955.9) Medium relevance
Windsor Zoning Code Medium relevance
Windsor Zoning Code (Chapter or) Medium relevance

Cited sections

Official Windsor code library

Frequently asked questions

Do I need a sign permit for a business sign in Windsor?

Yes—unless the sign is specifically listed as exempt, a Sign Permit is required for erection, alteration, or relocation of any sign (§ 17.36.020) and all signs must comply with Chapter 17.36.

What sign types are completely prohibited in Windsor?

Certain sign types are prohibited in all zones, including animated/flashing signs, roof signs, pole/pylon signs, inflatables, most billboards, and feather/sail flags (among others) under § 17.36.050; the code lists these explicitly.

Are banners or promotional flags allowed?

Banners are allowed as exempt (no permit) in limited nonresidential circumstances with restrictions (one banner per nonresidential use, max 24 sq ft, minimum clearance over walkways), but many temporary promotional flags are otherwise restricted—see § 17.36.060.B.9 and the prohibited signs list in § 17.36.050.

Can I put a portable A‑frame sign out in front of my shop?

Nonresidential uses may have one portable sign subject to limits: max 6 sq ft, max 4 ft height, location restrictions (only in front of the served use, not obstructing accessible paths), and display only during business hours; see § 17.36.060.B.10.

When is a Comprehensive Sign Program required?

A Comprehensive Sign Program is required for new multi‑tenant developments of three or more tenants, when five or more signs are proposed for a site, when three or more signs are requested by a single tenant in an uncovered multi‑tenant project, or for signs visible from US‑101 — see § 17.36.070.B for the complete list of triggers.

What are the rules for monument signs (size, height, landscaping)?

Monument signs must meet the zone‑specific caps in § 17.36.100 and the monument‑specific standards (setbacks, max height often 6 ft, landscape area equal to 2× the sign face, minimum spacing between monuments) in § 17.36.090.C. Confirm the numeric cap for your zone in Table 17.36‑02.

Are electronic reader boards or LED message signs allowed?

Electronic reader boards are listed among prohibited sign types in the prohibited signs section and are not generally allowed except where a specific, narrow exception applies; consult § 17.36.050 and discuss possible exceptions with Planning.

Can a sign be internally illuminated?

Illumination is regulated. Some highway‑oriented signs may be internally illuminated under controlled conditions and Comprehensive Sign Programs; other zones prohibit backlit or halo signage. Review § 17.36.030 and § 17.36.090 for illumination limits.

If my parcel is inside a PD or the Windsor Station Area/Downtown Specific Plan, which rules govern signs?

Specific Plan text or PD conditions can modify or replace the sign rules in Chapter 17.36; always check the PD/Specific Plan conditions first because they may control over the generic chapter rules. See § 17.16.050 and the Station Area/Downtown Specific Plan references.

What counts as sign area (how is area measured)?

Sign area is measured per the measurement rules in the sign chapter (single visible face is counted, multi‑faceted signs use the maximum single display surface; three‑dimensional objects are measured by their projection), and the code includes illustrations and specifics in § 17.36.030. Confirm measurement method before final design.

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