The KBC became a minimum statewide requirement on February 15, 1980, for all buildings over three stories in height, in excess of 20,000 square feet and intended for assembly, educational, institutional, or high hazard occupancy or business or industrial occupancies in excess of 100 occupants. In steps, the KBC became effective for all buildings, and by August 15, 1982, the code was applied throughout the entire state of Kentucky. The 1994 and 1997 KBC referenced the 1992 MEC. On July 1, 2005 the residential energy code was the 2000 IRC, while the commercial provisions referenced the 2003 IBC.
The 2007 Kentucky Building Code (KBC – applies to all commercial and multifamily buildings), which is based on the 2006 IBC, became effective July 1, 2007, but there was a 90-day grace period during which either the new or existing code could be used.
The 2007 Kentucky Residential Code (KRC – applies to single family dwellings, two-family dwellings and townhouses) is based in the 2006 IRC, with some modifications to the energy chapter. Due to a delay during the public comment process, it did not become effective until August 1, 2007. As with the KBC, there was a 90-day grace period during which either the new or existing code could be used.
In addition to these changes, Kentucky now requires inspections of all new HVAC systems statewide (both commercial and residential). Section N1101.8 of the residential code requires a permanent certificate to be posted on or in the electrical distribution panel listing the predominant R-values and other energy related features of the structure, but an energy code inspection is not conducted by state code officials for single family dwellings, two-family dwellings and townhouses under the purview of the residential code.
Latest Revisions: The 2007 Kentucky Building Code (KBC), based on the 2006 IBC, was last revised on March 6, 2011 for its 9th edition to reference the 2009 IECC as the energy code for the nonresidential buildings covered by the KBC.
The 2007 Kentucky Residential Code (KRC), based on the 2006 IRC, was last revised on January 6, 2012 for its 2nd edition. Chapter 11 covers energy efficiency, and it has been amended such that demonstrating compliance with the 2009 IECC is the sole compliance path for the buildings covered by the KRC.
The updated KBC and KRC are effective March 6, 2011, with compliance mandatory starting June 1, 2011.
Updates on this information can be found on the Kentucky Department of Housing, Buildings, and Construction Website.
Enforcement: The Department of Housing, Buildings, and Construction conducts plan review, inspects and enforces the energy code (and conducts HVAC inspections/certifications) for all commercial and multi-family residential dwellings. Compliance for detached single family dwellings, two-family dwellings and townhouses under the purview of the residential code is left to the discretion of local jurisdictions.
Information last updated September 30, 2012