The Accessory Dwelling Unit Guide will help you design your accessory dwelling unit (ADU) to meet Boulder building codes. To ensure your ADU meets all requirements, read it carefully before submitting a building permit application. Effective use of this guide can help you avoid costly revisions to your application later.
Active Survey
The city is working with a national research firm, Probolsky Research, on a randomized and statistically valid survey to better understand community concerns and opinions about potential 2026 ballot measures. Boulder voters may receive a phone call, text or email to complete the survey, which will be available in both English and Spanish.