Codes Adopted In Larimer County
Larimer County adopted its first building code effective January 1, 1972. All structures built after January 1, 1972 require(d) a building permit except as noted below, and except for structures in Townships 10, 11, and 12 within Ranges 76, 77, and 78 constructed prior to January 1, 1978.
The effective dates of all building codes and amendments adopted by Larimer County are:
| Effective Date | Code Edition |
|---|---|
| January 1, 1972 | 1970 UBC, Volume I; 1971 1&2 FDC; 1971 NEC; Plumbing Regulations, Technical Plumbing Code issued by Colorado Department of Public Health (1,2,4) |
| December 6, 1973 | 1973 UBC; 1973 UMC; 1971 1&2 FDC; 1971 NEC; Plumbing Regulations, Technical Plumbing Code issued by Colorado Department of Public Health (1,2) |
| June 28, 1978 | 1976 UBC; 1976 UMC; 1976 UPC; 1977 CECS (1,2) |
| February 15, 1983 | 1979 UBC; 1979 UMC; 1979 UPC; 1977 CECS (1,3) |
| March 5, 1984 | 1982 UBC; 1982 UMC; 1982 UPC; 1977 CECS (3) |
| November 3, 1986 | 1985 UBC; 1985 UMC; 1985 UPC; 1977 CECS (3) |
| October 30, 1989 | 1988 UBC; 1988 UAC; 1988 UMC; 1988 UPC; 1977 CECS |
| March 18, 1991 | Amendments to 1988 Code Editions |
| February 10, 1993 | 1991 UBC; 1991 UAC; 1991 UMC; 1991 UPC; 1977 CECS |
| July 1, 1995 | Amendments to 1991 Code Edition (Wildfire Mitigation & Roofing Requirements) |
| May 1, 1998 | 1997 UBC; 1997 UAC; 1997 UMC; 1997 UPC; 1977 CECS |
| July 1, 2000 | Amendment governing installation of solid fuel burning devices |
| November 17, 2004 | 2003 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC; 2002 NEC |
| October 2, 2007 | 2006 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC; 2005 NEC |
| July 31, 2011 | 2009 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC; 1997 UAC; 2008 NEC; 2008 NGBS |
| January 1, 2014 | 2012 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC; 1997 UAC; 2011 NEC; 2008 NGBS |
| May 1, 2016 | 2015 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC; 1997 UAC; 2014 NEC; 2008 NGBS |
| January 1, 2018 | Amendments to 2015 IRC, IBC & UAC regarding Vacation Homes in the Estes Valley Planning Area, appeals to Building Official determinations, abatement cost recovery |
| February 1, 2019 | 2018 IRC; IBC; IPC; IMC; IFGC; IECC; IEBC; IPMC; 2017 NEC; 2008 NGBS |
| September 1, 2019 | Amendments to 2018 IRC & IBC regarding Short-Term Rentals outside Estes Valley |
| July 1, 2020 | 2020 NEC |
| March 1, 2022 | 2021 IRC; IBC; IEBC; IECC; IFGC; IMC; IPC; IPMC; ISPSC; NEC admin amendments |
| FDC = One- and Two-Family Dwelling Code | IBC = International Building Code | IPMC = International Property Maintenance Code |
| NEC = National Electrical Code | IEBC = International Existing Building Code | IRC = International Residential Code |
| UBC = Uniform Building Code | IECC = International Energy Conservation Code | ISPSC = International Swimming Pool and Spa Code |
| UMC = Uniform Mechanical Code | IFGC = International Fuel Gas Code | NGBS = National Green Building Standard (voluntary green building standard for 1- and 2-family homes) |
| UPC = Uniform Plumbing Code | IMC = International Mechanical Code | |
| UAC = Uniform Code for the Abatement of Dangerous Buildings | IPC = International Plumbing Code | CECS = Colorado Energy Conservation Standards |
1. COs not required for single-family residences.
2. EXEMPT FROM PERMIT/SPECIFICATION REQUIREMENTS (at Building Officials discretion): Agriculture buildings, private garages, carports, sheds, one-story buildings with an area not exceeding 600 square feet of Type V conventional wood-stud construction, small and unimportant work.
3. EXEMPT FROM PERMIT/SPECIFICATION REQUIREMENTS (at Building Officials discretion): Agricultural buildings of any size for private use only.
4. EXEMPT FROM PERMIT/SPECIFICATION REQUIREMENTS (at Building Officials discretion): May waive permitting on any type of structure up to December 6, 1973. 1972 – no inspections took place anywhere in Larimer County; 1973 – inspections only happened in subdivisions along the Front Range in Ranges 68 & 69.
