Service Guide
JADU (Junior Accessory Dwelling Unit)
A homeowner-focused guide to creating efficient junior dwelling units within existing homes.
How a JADU Differs From a Full ADU
A JADU is generally built within existing single-family floor area and follows different code pathways than a standard ADU. It can be an excellent option for homeowners who need a smaller, more cost-controlled unit while still adding usable living space and long-term flexibility.
Because JADUs are integrated into the main home envelope, planning decisions around privacy, access, and shared systems are especially important. Good design balances efficiency with day-to-day livability for both main home occupants and JADU users.
Key Planning Decisions
Early decisions should include intended use, targeted square footage, kitchen configuration, and how utilities will be managed. Even compact JADUs require thoughtful layout strategy because every wall and opening affects circulation and functionality.
At this stage, homeowners should also evaluate long-term property goals. A JADU can support family transitions, private work/living needs, or supplemental income depending on local rules and owner preferences.
Permit and Compliance Focus
JADU permitting often depends on specific local standards tied to existing home conditions. Documentation quality matters: complete plans and clear scope reduce delays during review. Mechanical, electrical, and life-safety details should be coordinated before submittal to prevent revisions.
Official city guidance should be your first reference point to confirm current requirements before committing to final design direction.
Budget Expectations and Transparent Scope
JADUs can be cost-efficient compared with larger additions, but they still require disciplined budgeting. Transparent quoting should identify structural adjustments, utility modifications, finish allowances, permit items, and any assumptions that could trigger change orders.
Our standard is clear and simple: no hidden fees, full scope visibility, and written quote detail so homeowners can make informed decisions.