2018 International Building Codes
City Council adopted of the 2018 International Code Council (ICC) suite of codes with local amendments March 3, 2020. These can be found in Title 10 of the Boulder Revised Code. The city also adopted the 2020 City of Boulder Energy Conservation Code. The effective date for the new codes is July 1, 2020. The ICC codes can be viewed for free online here.
2020 National Electrical Code
On August 1, 2020 the 2023 edition of the NFPA 70 National Electrical Code (NEC) was adopted by the State of Colorado and enforced by the City of Boulder with local amendments in the Boulder Revised Code. As a result, the 2020 NEC became the minimum standard for electrical permits issued on or after August 1, 2020.