Hillsborough, CA · San Mateo County
California Accessory Dwelling Unit (ADU) Review Application
Property owners use this application to request Planning Division review of a proposed accessory dwelling unit or junior accessory dwelling unit in Hillsborough.
What this form is
The application gives the Town information about a proposed ADU or JADU so the Planning Division can determine which review and approval process applies before a building permit. It asks for the property and project details, owner and designer or contractor contact information, and calculations for lot coverage, floor area, and square footage. The packet also includes an ADU survey and location map instructions.
Who needs it
Property owners proposing an ADU or JADU in Hillsborough should submit this application for Planning Division review before seeking a building permit.
How to submit it
Submit the application to the Planning Division, 1600 Floribunda Avenue, Hillsborough, CA 94010; the form lists its phone and fax.
About notarization
This application is signed without a notary; it includes owner signature lines, and no attached or related step in the document is identified as notarized or sworn.
How to submit this form
- 1
Download The Application
Download the ADU Review Application and its included materials.
- 2
Complete The Application
Provide the property, project, owner, and designer or contractor details and complete the requested calculations.
- 3
Gather The Included Materials
Complete the ADU survey and prepare a location map following the packet instructions.
- 4
Submit To The Planning Division
Submit the application to the Planning Division at 1600 Floribunda Avenue, Hillsborough, CA 94010.
Frequently asked questions
- Do I need a notary for the ADU Review Application?
- No. The application has owner signature lines but no notary block; no attached or related step in the document is identified as notarized or sworn.
- How do I submit the ADU Review Application?
- Submit it to the Planning Division at 1600 Floribunda Avenue, Hillsborough, CA 94010. The form lists the Planning Division phone and fax.
- What information does the ADU Review Application ask for?
- It asks for property and project details, owner and designer or contractor contact information, and calculations for lot coverage, floor area, and square footage.
- Does the application packet include anything besides the application?
- Yes. The packet includes an ADU survey and instructions for a location map. The survey is to be submitted to the Planning Department before a building permit submission.