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Gaithersburg, MD Sign Regulations: Window Signs (2026)

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

Key Facts

Permanent window sign cap
25% of window surface, § 24-8.29
Temporary window sign cap
25% of window surface, § 24-8.30
Vacant storefront exception
Up to 95% for up to 9 months
Frame clearance
4 inches minimum from window frame
Temporary display limit
3 months per calendar year
Permit status
Exempt from permit, not from regulation

Summary

Gaithersburg caps permanent window signs at 25 percent of a window's surface under City Code § 24-8.29, with temporary window signs subject to the same 25 percent limit under § 24-8.30, except that a vacant non-residential storefront may cover up to 95 percent of its window space for up to nine months a year. Window signs are exempt from a permit but still count toward regulatory limits.

(A)Window permanent signs...(1)Permanent window signs must not cover more than twenty-five (25) percent of the total window surface.(2)Permanent window signs must not be placed within four (4) inches of a window frame.(3)Permanent window signs that are attached to a window must only be attached to the interior side of the window and must not be attached to the exterior side of the window.(4)Permanent window signs may be placed only in windows that are part of a façade that is allowed to have signage. ...(A)Window temporary signs...(1)Temporary window signs must not cover more than twenty-five (25) percent of the total window survey unless section 24-8.30(A)(2), below applies.(2)Temporary window signs on vacant non-residential tenant spaces may occupy up to ninety-five (95) percent of the total window surface for no longer than nine (9) months in any calendar year....(6)Temporary window signs must not be displayed for more than three (3) months in any calendar year, unless otherwise provided for in this article.

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 52 Update 1).

Full Breakdown

The standards sit in Article 8, Signage Standards, adopted by Ord. No. O-5-24 on July 15, 2024. 4(B)(4) exempts window signs from the permitting provisions of article 8, but they remain subject to its regulatory provisions and must be counted in the property's total allowable signage. 29 sets the standard for permanent window signs: no more than twenty-five percent of the total window surface, placed no closer than four inches to the window frame, mounted only on the interior side of the glass, and only in windows on a facade that is allowed to carry signage.

30 applies the same twenty-five percent cap and four-inch frame clearance to temporary window signs, but they may be attached to either the interior or exterior side of the glass and must come down once no longer in use. Temporary window signs are also time-limited: no more than three months' display in a calendar year, unless another article 8 provision says otherwise. 30(A)(2) may cover up to ninety-five percent of its window surface with temporary signage, for no longer than nine months in any calendar year, to help re-lease empty storefronts.

Violations & Fines

Because window signs still count toward article 8's regulatory limits even without a permit, exceeding the twenty-five percent coverage cap or the display-time limits is enforceable under § 24-15.1(C): the city manager or a designee may order a noncompliant window sign removed, and if the owner does not comply, the city can remove it and bill the cost to the owner. Removal or denial decisions may be appealed to the board of appeals under § 24-12.9, Administrative review.

Frequently Asked Questions

Do I need a permit for a window sign in Gaithersburg?
No. Section 24-8.4(B)(4) exempts window signs from the article's permitting requirements. They are still subject to the regulatory standards in §§ 24-8.29 and 24-8.30, though, including the twenty-five percent coverage cap, so skipping the permit does not mean the sign is unregulated.
How much of my storefront window can I cover with signage?
Twenty-five percent of the total window surface for both permanent and temporary signs, under §§ 24-8.29 and 24-8.30. A vacant non-residential tenant space is the exception: it may cover up to ninety-five percent of its window area with temporary signs for as long as nine months in a calendar year.
How long can a temporary window sign stay up?
No more than three months in any calendar year under § 24-8.30(A)(6), unless another provision of article 8 allows longer. The nine-month allowance for vacant non-residential storefronts covering up to ninety-five percent of their windows is the code's one built-in exception to that three-month limit.

Sources & Official References

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