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Codes Adopted In Larimer County

Larimer County adopted its first building code effective January 1, 1972. Any structure built since that date (with some minor exceptions) was and is required to have a permit issued before work is started. The effective dates of all building codes adopted by Larimer County since 1972 are:

Effective Date	Code Edition
January 1, 1972	1970 UBC, Volume I; 1971 1&2 FDC; 1971 NEC, Plumbing Regulations, Technical Plumbing Code by Colorado Department of Health
December 6, 1973	1973 UBC; 1973 UMC; 1971 1&2 FDC, 1971 NEC; Plumbing Regulations, Technical Plumbing Code by Colorado Department of Health
June 28, 1978	1976 UBC; 1976 UMC; 1976 Plumbing Code
February 15, 1983	1979 UBC; 1979 UMC; 1979 UPC
March 5, 1984	1982 UBC; 1982 UMC; 1982 UPC
November 3, 1986	1985 UBC; 1985 UMC; 1985 UPC
October 30, 1989	1988 UBC; 1988 UAC; 1988 UMC; 1988 UPC
March 18, 1991	Amendments to 1988 Code Editions
February 10, 1993	1991 UBC; 1991 UAC; 1191 UMC; 1991 UPC
July 1, 1995	Amendments to 1991 Code Editions (Roofing Requirements)
May 1, 1998	1997 UBC; 1997 UAC; 1997 UMC; 1997 UPC
July 1, 2000	Amendment governing installation of solid fuel burning devices
May 17, 2004	2003 IRC
November 17, 2004	2003 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC
October 2, 2007	2006 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC

UBC = Uniform Building Code
FDC = One and Two Family Dwelling Code
UMC = Uniform Mechanical Code
NEC = National Electrical Code
UPC = Uniform Plumbing Code
UAC = Uniform Code for the Abatement of Dangerous Buildings
IRC = International Residential Code
IBC = International Building Code
IPC = International Plumbing Code
IMC = International Mechanical Code
IFGC = International Fuel Gas Code
IECC = International Energy Conservation Code
IEBC = International Existing Building Code