Denver, CO Building Safety: Pest Control (2026)

Denver's property maintenance requirements under the Denver Building and Fire Code (Chapter 10 of the Denver Revised Municipal Code) require property owners and landlords to maintain residential premises in a condition free of rodent, insect, and other pest infestations. Landlords are responsible for pest control in multi-unit buildings including common areas and individual units when infestations result from building conditions. The Denver Department of Public Health and Environment (DDPHE) handles complaints about health-related pest issues including rodent infestations and mosquito control. The department conducts inspections and may issue orders for abatement of pest conditions that threaten public health. All commercial pesticide applicators operating in Denver must be licensed by the Colorado Department of Agriculture under the Pesticide Applicators' Act (C.R.S. 35-10). Integrated pest management (IPM) practices are encouraged to minimize pesticide exposure to residents. Under the Colorado Warranty of Habitability (C.R.S. 38-12-505), landlords must maintain premises fit for human habitation, which includes being reasonably free of pest infestations. Tenants must report pest issues promptly and cooperate with treatment efforts.