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Westminster, CO Sign Regulations: Window Signs (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
WMC § 11-11-10(E), Table 11-11-10-5
Coverage limit
30% of window glass per frame
Permit required
No
Digital window signs
Not permitted, any category
Exterior placement
Not permitted; interior only

Summary

Westminster lets any property post window signs without a permit, but caps the total sign area at 30 percent of the glass in a window's mullion-and-transom frame. Anything mounted outside or within three feet of the glass on the outside doesn't count as a window sign at all.

(E)Window Signs: A "window sign" is a sign posted, painted, placed, or affixed to the inside of a window and inside a building, but clearly visible from outside the building. Signs placed on the exterior of a window are not permitted. This includes any sign that is mounted within three (3) feet of a window and oriented to the window in a manner that is visible from the outside of the building or wraps or film that reduce the transparency of the window. ... 5 Sign area (max. % of glass within a Mullion and Transom, or the Frame if the Window is not divided into separate Lights) 30% ... 2 Permit required? No ... 9 Digital No

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 12).

Full Breakdown

" The definition reaches further than glass alone: it includes any sign mounted within three feet of a window and oriented so it is visible from outside, and any wrap or film that reduces the window's transparency, though a curtain wall or window wall is not treated as a window for this purpose. Table 11-11-10-5, Standards for Window Signs, applies identically across every land use category in the city (Residential Low and Medium Intensity, Office/Transition, Commercial, Mixed Use, Employment, and Industrial Flex): window signs are permitted outright, no sign permit is required, and there is no cap on the number of window signs per building or per street frontage.

" The table also bars digital window signs outright across every category, while internal illumination is allowed only in the Office/Transition, Commercial, Mixed Use, Employment and Industrial Flex categories, not in the two residential categories. Because window signs are exempt from the Chapter's sign-permit process under § 11-11-6, a business can change window signage without City review as long as it stays under the 30 percent coverage cap and does not use prohibited digital displays.

Violations & Fines

Exceeding the 30-percent glass-coverage cap, mounting a sign on the exterior of the window instead of the interior, or using a digital display in a window sign violates § 11-11-10(E) and Table 11-11-10-5; the Building Official or Planning Manager may order the sign removed as an illegal or nonconforming sign under § 11-11-6(B).

Frequently Asked Questions

Do I need a permit for window signs in Westminster?
No. Table 11-11-10-5 under WMC § 11-11-10(E) states no permit is required for window signs in any land use category in the city.
How much of my storefront window can I cover with signs?
Up to 30 percent of the glass within a mullion-and-transom frame, or the whole frame if the window isn't divided into separate lights, per the coverage standard in Table 11-11-10-5.
Can I put a digital sign in my window?
No. Table 11-11-10-5 lists digital as "No" for window signs in every category, so an electronic or LED display in a window is not permitted as a window sign under Westminster's code.

Sources & Official References

Other rules in Westminster

All Westminster rules

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