Junior ADU (JADU) Conversions in Porterville
Turn part or all of an attached garage into a junior ADU of up to 500 sq ft — a simpler, lower-cost way to add a rental or family suite.






What is a junior ADU?
A junior accessory dwelling unit (JADU) is a small unit of up to 500 sq ft created inside a single-family home — and an attached garage counts. It has an efficiency kitchen and its own exterior entrance, and it may share a bathroom with the main house.
- Up to 500 sq ft, inside the home or attached garage
- Efficiency kitchen: sink, cooking appliance, counter and storage
- Own exterior entry; optional interior door to the house
- May share a bathroom with the main home
- Owner lives on the property (main house or JADU)
- Can sit alongside a separate ADU on the same lot
Source: California HCD, ADU Handbook (PDF).

Have an attached garage?
A JADU may be the simplest way to add a rental or family suite.
JADU vs. ADU
JADU
Inside the home or attached garage, up to 500 sq ft, efficiency kitchen, may share a bath, owner on site.
Garage ADU
Attached or detached garage, full kitchen and bathroom, fully self-contained, can be rented separately.
Both
Many Porterville lots can have one ADU and one JADU — for example a detached-garage ADU plus a JADU inside the house.
Questions, answered
What is a JADU?
A junior accessory dwelling unit is a unit of up to 500 sq ft created inside a single-family home — including an attached garage — with an efficiency kitchen. It can share a bathroom with the main house, and the owner must live on the property.
JADU or ADU — which is better for my garage?
A JADU suits an attached garage when you want a simpler, lower-cost unit for family or a tenant and you live on the property. A full ADU suits detached garages, larger budgets and fully separate rentals.
Does a JADU need its own bathroom?
No. A JADU may share a bathroom with the main house, though many homeowners add one for privacy.
Does a JADU need a separate entrance?
Yes — a JADU needs its own exterior entry, which in a garage conversion is usually where the garage door used to be.
Are there impact fees for a JADU?
Under state law, a JADU is exempt from impact fees from local agencies, special districts and water corporations (California HCD, ADU Handbook (PDF)).
Get your free JADU quote
Share a few details about your garage and what you want it to become. We follow up to talk through layout, permits, timeline and price.
- ADU, JADU, studio, family suite or office
- Porterville, Lindsay, Visalia & Tulare County
- Takes about two minutes
