On residential lots of 2.5 acres or less, brush, shrubs, grasses, and weeds must generally be kept under nine inches. Growth over nine inches that causes a nuisance violates Land Use Code Article 14; designated noxious weeds fall under the county's mandatory Weed Management Plan.
Article 14 defines regulated 'weeds and brush' as any underbrush, bush, shrub, or plant material greater than nine inches in height that grows without cultivation and is allowed to grow so as to cause a public hazard or nuisance. This applies to residential lots of two and one-half acres or less. Planting beds, cultivated gardens, and food-production plots are excluded, and state-designated noxious weeds are handled under the County Noxious Weed Management Plan (C.R.S. 35-5.5) rather than Article 14. Cities enforce their own grass-height rules within their limits.
Written notice with an abatement deadline (ordinarily 30 days). If uncut, the county mows and bills the owner, adding up to a 10% inspection charge; unpaid amounts add a 10% penalty and go to the county treasurer.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Boulder, CO
Boulder imposes no general restriction on year-round lawn ornaments, statuary, or religious displays on private residential property. The Sign Code in BRC 9-...
Boulder, CO
Boulder has no ordinance specifically regulating residential inflatable holiday displays. Size, motor noise, and lighting hours are not capped by the city fo...
Boulder, CO
Boulder explicitly carves out holiday and seasonal displays from its Outdoor Lighting Ordinance. BRC 9-9-16 (Light Output) restricts lamps and bulbs visible ...
Boulder, CO
An outdoor kitchen in Boulder typically requires a building permit when it exceeds 200 sq ft, includes a roof or pergola, or is attached to the house. Gas li...
Boulder, CO
Boulder has no smoker-specific ordinance; offset, pellet, kamado, and wood-fired smokers fall under the general IFC 308 framework adopted in BRC 10-8-2 plus ...
Boulder, CO
Boulder adopts the International Fire Code under Boulder Revised Code Title 10 Chapter 8 (Fire Code). IFC Section 308.1.4 prohibits charcoal burners, gas gri...
See how Boulder's weeds & overgrown grass rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.