What is an ADU?

An ADU is a small independent residential unit located on the same property as a stand-alone home. ADUs can be attached to an existing home or built above an existing garage. They can be carved out of an existing building, splitting one dwelling into two by converting underutilized spaces like garages into new independent units. Attics and basements can also be converted into upper or lower apartments. More common today, a detached ADU is an independent dwelling within a stand-alone structure often located in a backyard. ADUs are not a new concept and were a common feature in single-family housing in the early twentieth century. Historically, ADUs have also been referred to as an in-law or mother-in-law unit, granny flat or carriage house.

ADU Frequently Asked Questions

Accessory Dwelling Unit (ADU) Loan Financing-- Backyard Homes Project

Funding for the Backyard Homes Project – ADU Loan is no longer available. Previous funding has been fully committed and future funding of this program is not expected at this time.


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