Longmont Code Enforcement enforces a 12-inch maximum height for weeds and grass on private property. The rule is administered by the Code Enforcement Office (303-651-8695) under the City's nuisance and weed-control authority and applies to all land within city limits, including city-owned land.
The City of Longmont Code Enforcement website lists 'weeds and grasses cannot exceed 12 inches in height' as a Top Code Violation. Enforcement is handled by the Code Enforcement Office located at the Civic Center (350 Kimbark Street). Complaints can be filed online via ServiceWorks or by phone. The weed ordinance is part of Longmont's broader nuisance code and is enforced in tandem with the Colorado Noxious Weed Act, which Longmont is required to follow on public and private property. Vacant lots, unmaintained turf, alley strips and tree lawns adjacent to private property are all owner-responsibility per Longmont Municipal Code (LMC) 13.24.020, which makes the adjacent property owner responsible 'for the care, maintenance and removal of trees and plants up to the center of the alley.'
Code Enforcement issues a written notice to abate (typically 7-10 days). Failure to mow can result in the City contracting mowing services and assessing the cost plus an administrative fee as a lien against the property. Continued violations are charged as municipal nuisance violations subject to Municipal Court fines.
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