Longmont, CO Parking Rules: Commercial Vehicle Restrictions (2026)

Longmont's Title 11 does not single out commercial vehicles for a separate citywide weight or size cap on residential streets the way some cities (e.g., Tumwater WA, Chicago IL) do, but every vehicle is subject to the LMC Chapter 11.12 48-hour stationary cap and the 600-foot move-and-stay-away rule. Practically, that means a commercial truck, work van, or trailer left at the curb in a residential neighborhood is treated as abandoned under LMC 11.12.040 once it has been in place for 48 hours. Contractor trailers are addressed specifically: a contractor trailer used in connection with active repairs or alterations may remain on the street for up to a maximum of 180 days as long as a conspicuous dated notice is posted on the trailer identifying the job-site address and a contact telephone number. Without that notice, the trailer is subject to the standard 48-hour abandonment rule. Commercial sleeper rigs (a converted truck or trailer used as living or sleeping accommodation) fall under the sleeper-vehicle definition in LMC Chapter 11.12 and are banned from the public way without a 7-day, $25 permit. Loading and unloading operations are an enumerated exception to the sleeper-vehicle rule. On private property, commercial vehicles must be parked on an approved paved or graveled surface in compliance with Land Development Code Chapter 15.05, and may not be stored in required front yards on residential lots beyond what the zoning district allows. For repeat violators, four or more unpaid parking tickets triggers immediate tow.