Kentucky Building Codes

Important: Kentucky requires contractors to be licensed through the Department of Housing, Buildings, and Construction (DHBC). Residential and commercial general contractors must hold a valid Kentucky contractor license. Trade-specific licenses are required for electrical, plumbing, HVAC, and fire protection work. License requirements include experience verification, examination, and proof of insurance. Workers' compensation is required for employers with one or more employees. Kentucky does not have reciprocity with other states' licenses. Out-of-state contractors must obtain a Kentucky license before starting work.

Important: Kentucky adopted the Kentucky Building Code based on the IBC 2018 and Kentucky Residential Code based on the IRC 2018, effective January 1, 2019 (815 KAR 7:120). The Department of Housing, Buildings, and Construction (DHBC) administers the code statewide. All jurisdictions must enforce the state code. Local amendments require DHBC approval. Permitting is handled at the county or city level. In areas without a local building inspector, the state provides inspection services through DHBC field offices. Kentucky also enforces the IECC 2018 for energy code compliance.

Important: Western Kentucky counties are in a tornado-prone region with elevated design wind speeds per ASCE 7 and IRC Table R301.2. Design wind speeds range from 105 mph (eastern KY) to 115-120 mph (western KY) for 3-second gust at Exposure C. Counties in the Jackson Purchase region (far west) and along the Tennessee border have the highest wind requirements. The IRC requires enhanced nailing schedules, hurricane clips/straps at roof-to-wall connections, and continuous load paths in areas with wind speeds exceeding 110 mph. Roofing products must be rated for the applicable wind speed zone.