The City of Boulder welcomes your feedback. Use our Inquire Boulder customer service tool to tell us what’s on your mind.

  • Planning and Development Services Online Center
  • Maps & Property Information
  • Customer Self Service Portal
  • Building Permits
  • Applications and Forms
  • Inspections
  • Development Review Projects
  • Codes and Regulations
  • Rental Housing Licensing
  • Contractor Licensing
  • Boards and Commissions
  • Affordable Housing

Codes and Regulations

Development in the City of Boulder requires conformance with all adopted building codes, all land use regulations, and the city’s design and construction standards. These codes, rules and regulations comprise the minimum standards required for development in the City of Boulder.

2018 International Building Codes

City Council adopted of the 2018 International Code Council (ICC) suite of codes with local amendments March 3, 2020. The city also adopted the 2020 City of Boulder Energy Conservation Code pdf. The effective date for the new codes is July 1, 2020.  

2020 National Electrical Code

On August 1, 2020 the 2020 edition of the NFPA 70 National Electrical Code (NEC) will be adopted by the State of Colorado and enforced by the City of Boulder.  As a result, the 2020 NEC will become the minimum standard for electrical permits issued on or after August 1, 2020.


Adopted Building Codes

Adopted building codes consist of:

The city updates its codes on a regular basis to ensure that the regulations keep pace with changes in the construction industry.

International Code Council (ICC) Codes

The City of Boulder has adopted the 2018 International Code Council (ICC) codes, which went into effect on July 1, 2020. Local amendments are in Title 10 of the Boulder Revised Code.

Local amendments to the ICC family of codes have been kept to a minimum and are defined according to the community vision of the Boulder Valley Comprehensive Plan. Other sections of the Boulder Revised Code may apply to your project and advance consultation with a Project Specialist is highly recommended.

On March 3, 2020, City Council approved "Ordinance No. 8366" to adopt the 2018 International Codes by reference, with amendments. Select the "Changes to the International Building & Residential Codes" link for more information.

To view printed copies of the building codes, visit the Planning and Development Services (P&DS) Center at 1739 Broadway, third floor. P&DS also has order forms available for customers wishing to purchase the codes. The ICC codes can also be viewed free online here.


Boulder Revised Code

The Boulder Revised Code is the charter for the municipal government of the City of Boulder, Colorado.

An online version of the Boulder Revised Code is provided as a public service, but is different in layout, format, and structure from the official Boulder Revised Code. Select the "Boulder Revised Code" link to view the online version.

The official version of the Boulder Revised Code is supplemented and published quarterly in written form, and is available in Central Records at the City of Boulder Municipal Building, 1777 Broadway. A printed copy is available at the Main Boulder Public Library, 1000 Canyon Boulevard.

Boulder Revised Code Definitions

Design and Construction Standards

All civil engineering design must conform to the Design and Construction Standards.

The Design and Construction Standards are intended to protect the public health, safety, and welfare in the provision and maintenance of public improvements within the City of Boulder. These standards apply to the comprehensive design and construction of adequate and functional public improvements associated with developing, redeveloping and subdividing lands and providing necessary right-of-way, transportation, and utility services.