Longmont, CO Sign Regulations: Holiday Displays (2026)

LMC Chapter 15.06 (Signs) regulates signs displaying commercial or non-commercial messages but does not classify holiday lights, wreaths, garlands, inflatables, or other seasonal decorations as 'signs' requiring a permit when they convey only a seasonal/holiday message and are not advertising a business. The city has no fixed date-range ordinance dictating when residential holiday displays must come down, unlike some HOAs which may set their own rules. Practical limits derive from other code provisions: (1) decorations may not encroach on the public right-of-way or sidewalk; (2) lights must not be aimed in a way that creates glare at neighboring residences or motorists (this can be treated as a nuisance under LMC Title 9 or 10); (3) decorations may not block traffic-sight triangles at corner lots; and (4) inflatables, lighting, or audio that generates noise audible 25 feet away during the 10 p.m.-7 a.m. quiet hours is a violation of LMC 10.20.100 / 10.20.110. HOAs in Longmont may impose additional take-down deadlines and reasonable aesthetic standards, but cannot ban displays outright. The Longmont civil-penalty schedule ($100 / $200 / $500) applies if a decoration becomes a public-safety or nuisance violation.