Junior ADU (JADU) design

Junior
ADUs.

A JADU is carved out of the primary residence, up to 500 sq ft. Often a converted bedroom with a small kitchenette. Fastest to permit.

Up to 500 sq ftTypical Size
$6,000 to $12,000Design Fee Range
1 to 2 months designTotal Timeline
About Junior ADU (JADU)s

The junior adu (jadu) explained.

Junior ADUs are the simplest and fastest path to adding a rental unit or family space. They are created from existing square footage inside the main house, usually a converted bedroom with added kitchenette and dedicated bathroom.

Construction Cost

$60,000 to $140,000 construction

Design Fee

$6,000 to $12,000

Size Range

Up to 500 sq ft

Timeline

1 to 2 months design, 2 to 4 months construction

Ideal For

When a junior adu (jadu)
makes sense.

Fast path to rental income, adult children, home offices, aging parents

Key considerations

01

Detail 01

Must be within existing walls of the primary residence

02

Detail 02

Kitchenette limited to specific appliance sizes under current code

03

Detail 03

Bathroom required separate from main house

04

Detail 04

Often exempt from parking requirements

Ready to build
a junior adu (jadu)?

Start your ADU building program online. David will call within one business day.

Start Your ADU → Call (805) 444 1230