Sign Regulations in Longmont, CO (2026)
3 verified sign regulations for Longmont, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Political Signs
Longmont allows political election signs on private property only, with permission of the owner. They cannot be placed in the public right-of-way, attached to utility poles, street signs, traffic signals, hydrants, trees or fences, and must not obstruct driver sightlines. Sign rules are codified in LMC Chapter 15.06, and HOAs are further preempted by Colorado's CCIOA political-sign statute (C.R.S. 38-33.3-106.5).
Longmont Political / Election Sign Rules
Few RestrictionsGarage Sale Signs
Longmont prohibits placing any signs — including garage-sale, yard-sale, and similar temporary signs — in the public right-of-way. All signs are regulated by LMC Chapter 15.06; off-premise garage sale signs on utility poles, traffic signs, hydrants, or trees are subject to removal by the City and to the civil penalty schedule of $100 / $200 / $500.
Longmont Garage Sale Signs
Few RestrictionsHoliday Displays
Longmont does not impose a calendar-based limit on residential holiday lights or seasonal decorations. They are exempt from sign-permit requirements under LMC Chapter 15.06 so long as they are not used as commercial signage, do not obstruct driver sightlines, and do not create a glare or nuisance complaint. Excessive brightness or off-premise placement can still trigger LMC nuisance provisions.
Longmont Holiday Lights & Decorations
Few RestrictionsLooking for Boulder County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Longmont city rules.
Sign Regulations in Boulder County →