Longmont prohibits visible exterior signage for home occupations. Signage for home-based businesses is governed by LMC Chapter 15.06 (Signs), and the home occupation standards in Title 15 require that the activity remain clearly incidental and subordinate to the residential use — meaning no on-premises advertising visible from the street.
Under Longmont's Land Development Code, signage is regulated by LMC Chapter 15.06 (Signs). The Home Occupation provisions require that there be no exterior evidence of the home occupation that would change the residential character of the dwelling or neighborhood. In practice, this means freestanding business signs, illuminated signs, A-frame signs, banners, and window signs advertising the home business are not permitted in residential zones. Vehicle signage (commercial lettering on a personal or business vehicle parked at the residence) and address-only nameplates are generally tolerated. Any sign visible from a public right-of-way that advertises a home business will trigger code enforcement under both the home occupation standards (Title 15) and the Sign Code (Chapter 15.06). For commercial signage in nonresidential zones — entirely separate from home business rules — permits are required from Planning & Development Services.
Violation of sign regulations under LMC Chapter 15.06 carries the general municipal penalty: up to $2,650 fine and/or up to 364 days imprisonment, plus a code enforcement order to remove the sign within a stated cure period.
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Longmont, CO
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