Longmont's updated LMC 15.05.040 (effective January 1, 2026) bans artificial turf as a 'non-functional turf' replacement in tree lawns, medians, parking-lot strips, and transportation corridors. Elsewhere on private property, artificial turf is allowed, but Colorado HB 21-1229 prevents HOAs from blocking drought-tolerant landscaping while still permitting HOA regulation of non-vegetative materials.
Under the City's Landscape Regulations summary, the LMC 15.05.040 update explicitly lists artificial turf as a banned replacement in the categories of non-functional turf — meaning you cannot install artificial turf to replace grass between the sidewalk and curb (tree lawn), in medians, or in parking lot landscape strips. At least 75% of those areas must be living plant material. On private residential yards, artificial turf is permitted. At the state level, HB 21-1229 added nonvegetative turf grass to the list of allowed drought-prevention measures HOAs cannot prohibit, but HOAs may still 'regulate' artificial turf (e.g., limit it to backyards or require specific products) because it is not considered a xeriscape material under SB 13-183.
Installing artificial turf in any 'non-functional turf' area listed in LMC 15.05.040 will fail landscape plan review for new or redeveloped sites and will not receive city approval. Disputes between homeowners and HOAs over artificial turf are governed by Colorado HB 21-1229 and SB 23-178 (HOA water-wise landscaping), enforceable in civil court.
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