After reviewing the information on the main page of this site, the first step in building an ADU is completing the ADU intake webform.

To do this, you will need to know:

• The address at which the ADU will be added
• How many legal units are already on the property
• When the property was built
• How many ADUs you want to add

You may also need:

• Proof of owner-occupancy if the building is in the South, West, or Southeast zones and has three or fewer units. This can be a drivers license, state ID, CityKey ID, property tax bill, or other documentation proving ownership.

After you submit your webform, you will need to provide:

• Documentation of notification to your neighbors and ward office
• Affordability documentation (for applications for two or more ADUs)

Once your ADU intake webform has been approved, you will be notified that you can move on to applying for a building permit with the Department of Buildings. For more information, visit the Department of Buildings website or see the “Building Permit Application Requirements” section of the ADU homepage.

Start your ADU intake webform here