Accessory Dwelling Units (ADU)

What is an ADU?

An accessory dwelling unit, usually just called ADU, is a secondary housing unit on a single-family residential lot, a self-contained living unit with a kitchen, bathroom, living room, and bedroom.



Common Names

Granny Flats, Second Unit, In-Laws Unit, Guest House, Studio Unit.


ADU: Understanding Accessory Dwelling Units

To satisfy the increased demand for new housing in California, the state established guidelines to build a second unit using the same lot of an existing home. By using the same lot, usually the backyard, ADUs tend to be significantly less expensive; it could be legally rented and can provide additional income for homeowners. Cities that implement ADU programs and encourage their development improve access to jobs, education, and services for their community.

Types of ADU



New Construction:


Detached: Free standing structure

Attached:  Shares with main home


Above: On top of existing garage.


Converted garage or other accessory building


Parking Requirements

In most cases ADU are exempted from additional parking.

Do we need to get permits for an ADU

Yes, you will require applying for a building permit before start construction.


State Financial Incentives

The State of California offer several financial incentives in the form of grants for ADUs

Design Matters

When it comes to small living spaces, like an ADU, smart design is absolutely critical, because you want to pack comfort and functionality into a small compressed space.


Copyright 2021