Ask a Building Official

The Boulder County Land Use Department has Planning, Building and Zoning jurisdiction in unincorporated areas in Boulder County, not in cities and towns.

Questions regarding City of Boulder addresses should be directed to City of Boulder Planning and Development Services.

To verify if your address is in unincorporated Boulder County OR a city/town, please check via the Property Search tool before submitting your question to Ask a Building Official.

See Municipality Contacts Within Boulder County for land use and building questions concerning Boulder County cities and towns.

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Land Use Building Safety and Inspection Services

Email: Ask a Building Official
Main: 303-441-3926
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