Question 1

What is an ADU?

Accepted Answer

An ADU is an attached or detached residential unit on the same lot as a primary residence, providing complete living facilities, including sleeping, cooking, and sanitation.

Question 2

Is financial assistance available for building ADUs?

Accepted Answer

Programs like the CalHFA ADU Grant may provide funding for predevelopment costs.

Question 3

What is a Junior Accessory Dwelling Unit (JADU)?

Accepted Answer

A JADU is a smaller unit (up to 500 sq. ft.) entirely within a single-family residence. It may share sanitation facilities with the main house.

Question 4

Why are ADUs important?

Accepted Answer

ADUs provide affordable housing options, allow families to stay close, and contribute to addressing California's housing crisis.

Question 5

Do I need a permit to build an ADU?

Accepted Answer

Yes, ADUs require permits, which must be approved ministerially within 60 days of a complete application.

Question 6

Can an ADU application be denied due to zoning violations?

Accepted Answer

No, unless the violation poses a public health or safety threat.

Question 7

Are ADUs allowed in all zones?

Accepted Answer

ADUs are permitted in zones allowing residential use, subject to water, sewer, traffic, and safety considerations.

Question 8

What are the size limits for ADUs?

Accepted Answer

ADUs must be at least 850 sq. ft. (1,000 sq. ft. for units with more than one bedroom). Converted ADUs are not subject to size limits.

Question 9

Are there height restrictions for ADUs?

Accepted Answer

Yes, detached ADUs can be up to 16-18 feet tall, with some exceptions allowing up to 25 feet.

Question 10

Do ADUs require parking?

Accepted Answer

Parking is generally not required for ADUs near public transit or in certain other conditions.

Frequently asked questions