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.
Accessory Dwelling Unit (ADU) Application
This Accessory Dwelling Unit Application contains additional information that needs to be included in your building permit application for an ADU. Your application will not be accepted for review unless all the information is present.