Boulder County BuildSmart Program Energy Efficiency Collage 

Boulder County BuildSmart

Changes for 2016: Building Code Adoption & Amendments

Boulder County has updated and amended the building code adoptions to the latest 2015 editions of the International Codes. These changes, which went into effect on January 1, 2016, apply to construction on properties located in the unincorporated portions of Boulder County (outside of the cities and towns), although plan reviews and inspections are currently performed in the Town of Jamestown.

Please contact the Building Safety & Inspection Services Team via the Ask a Building Official webform or call 303-441-3926 if you have questions or need additional information about this change.

Boulder County BuildSmart, the county’s residential green building code, requirements affect all new residential construction and additions in unincorporated Boulder County.

The Boulder County BuildSmart Regulations encourage high-performing, sustainable residential development, and redevelopment in the unincorporated areas of Boulder County by promoting development that will: create energy efficient structures that reduce both the production of greenhouse gases from residential buildings and the amount of material sent to landfills, conserve water and other natural resources in the homebuilding process, and insure proper indoor air quality. View the BuildSmart Checklist.

Boulder County BuildSmart also furthers the goals and measures outlined in the Colorado Climate Action Plan and the County's Sustainable Energy Plan. The production and efficient use of energy will continue to play a central role in the future of Colorado and the nation as a whole. The development, production, and efficient use of renewable energy will advance the security, economic well-being, and public and environmental health of Colorado, as well as contributing to the energy independence of our nation.

The current Boulder County BuildSmart regulations include numerous options for compliance, providing additional flexibility in selection of the most cost-effective design for each project. Please contact the Building Safety & Inspection Services Team via the Ask a Building Official webform or 303-441-3926 to learn about your options.

RESNET (Residential Energy Services Network) Accredited HERS (Home Energy Rating System) Providers

View a list of accredited HERS (Home Energy Rating System) raters serving Boulder County.

Zero Net Energy

Zero Net Energy is currently required for new homes above 5,000 square feet of conditioned floor area.

Boulder County BuildSmart Training Calendar

For trainings, workshops, and seminars Boulder County BuildSmart, check the Boulder County BuildSmart Training Calendar for trainings, workshops, and seminars designed to provide Contractors and Homeowners with the knowledge and experience to meet the requirements of the Boulder County BuildSmart regulations and to build superior dwellings.

Construction & Demolition Recycling Resources

See Construction & Demolition Recycling Resources for information on how to successfully reuse and recycle deconstruction materials.


Boulder County BuildSmart

Main: 303-441-3925
Fax: 303-441-4856

Courthouse Annex Building

2045 13th Street
Boulder, CO 80302
8 a.m. - 4:30 p.m. M, W, TH, F
10 a.m. - 4:30 p.m. Tuesday
Plan review services for building permits are not available on Tuesdays.
Building permits can be applied for and issued until 4 p.m.
Map & Directions

Mailing Address

PO Box 471
Boulder, CO 80306

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