Updated : 04/22/2024

Overview

***Notice: Beginning April 1, 2020, all projects must be designed to meet the 2018 ICC suite of codes and the 2020 City of Boulder Energy Conservation Code.  A draft of the proposed energy code can be found here .***

Boulder, CO adopts the following codes:

• The International Building Code, 2018 edition, including appendix chapters I, J, and K. Boulder, CO Muni. Code § 10-5-2 (adopted with amendments).
• The International Residential Code, 2018 edition, including appendix chapters D, E, F, H, J, K, P, Q, R, and S Boulder, CO Muni. Code § 10-5.5-2 (adopted with amendments).
• The International Property Maintenance Code, 2018 edition, including appendix chapters A, B, and C. Boulder, CO Muni. Code § 10-2-2 (adopted with amendments).

Helpful resources for Boulder, Colorado include the following.

• PLRB, Ordinance and Law Coverage Discussion for Colorado

Residential Building Code

Colorado has yet to adopt a statewide residential code. Local laws will control.See PLRB, Colorado Building Codes for more information on state level codes.

Boulder adopted the 2018 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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2018 IRC(Boulder, CO 10-5.5-2. - Adoption of the International Residential Code With Modifications.)

...(a) The 2018 edition of the International Residential Code of the International Code Council is hereby adopted by reference as the City of Boulder Residential Building Code and has the same force and effect as though fully set forth in this chapter, except as specifically amended by the provisions...

Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Boulder ? No
Citation: Boulder, CO Muni. Code § 10-5.5-2(g).
Municipal Code https://library.municode.com/co/boulder/codes/municipal_code?nodeId=TIT10ST_CH5.5REBUCO_10-5.5-2ADINRECOMO
Comments:

Boulder, CO Design Criteria.

Comments

***Notice: Beginning April 1, 2020, all projects must be designed to meet the 2018 ICC suite of codes and the 2020 City of Boulder Energy Conservation Code.  A draft of the proposed energy code can be found here .***

Boulder, CO adopts the International Residential Code, 2018 edition, including appendix chapters D, E, F, H, J, K, P, Q, R, and S Boulder, CO Muni. Code § 10-5.5-2 (adopted with amendments).

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

***Notice:Beginning April 1, 2020, all projects must be designed to meet the 2018 ICC suite of codes and the 2020 City of Boulder Energy Conservation Code.  A draft of the proposed energy code can be found here .***

Refer to Appendix J of the adopted 2018 IRC, and also to the applicable provisions of the amended 2012 IPMC in Chapter 10-2 of the city code.

Commercial Building Code

Boulder adopted the 2018 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

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2018 IBC(Boulder, CO 10-5-2. - Adoption of International Building Code With Modifications.)

...(a) The 2018 edition of the International Building Code of the International Code Council is hereby adopted by reference as the City of Boulder Building Code and has the same force and effect as though fully set forth in this chapter, except as specifically amended by the provisions of this chapter....

Comments

***Notice: Beginning April 1, 2020, all projects must be designed to meet the 2018 ICC suite of codes and the 2020 City of Boulder Energy Conservation Code.  A draft of the proposed energy code can be found here .***

Boulder, CO adopts the International Building Code, 2018 edition, including appendix chapters I, J, and K. Boulder, CO Muni. Code § 10-5-2 (adopted with amendments).

Existing Buildings

***Notice: Beginning April 1, 2020, all projects must be designed to meet the 2018 ICC suite of codes and the 2020 City of Boulder Energy Conservation Code.  A draft of the proposed energy code can be found here .***

Refer to chapter 34 of the adopted 2018 IBC, and the applicable provisions of the amended 2012 IPMC in Chapter 10-2 of the City Code.

Boulder, CO adopts the International Property Maintenance Code, 2018 edition, including appendix chapters A, B, and C. Boulder, CO Muni. Code § 10-2-2 (adopted with amendments).

Other Building Codes