ADU / In-Law Suite
An ADU or in-law suite is a self-contained secondary living unit with its own kitchen, bath, and entrance, built as a detached structure, garage conversion, or addition. It is a full small-scale build priced per project and governed by local ADU rules.
How adu / in-law suite is done
- Confirm ADU eligibility, setbacks, and utility connections
- Design the unit and secure permits
- Build foundation and frame the structure
- Run separate or shared utilities, plumbing, and electrical
- Insulate, finish interior, and install kitchen and bath
- Final inspections and occupancy sign-off
What homeowners should know
- Check your city's ADU size, parking, and owner-occupancy rules first
- Ask whether utilities will be shared with or separated from the main home
- Understand how an ADU affects property taxes and insurance
- Plan for kitchen and bath costs since it is a complete dwelling
- Consider future rental use when choosing finishes
Permits, timelines & things to consider
- ADU permitting varies widely by city and state, with specific size and setback limits
- Utility connections and separate metering are significant cost factors
- It is a complete dwelling, so kitchen, bath, and HVAC are all required
- Timelines commonly run four to eight months
- Rental and zoning rules may restrict short-term use
Frequently asked questions
Do ADU rules differ by location?
Yes, size limits, setbacks, parking, and owner-occupancy requirements vary significantly by city and state, so local rules should be confirmed early.
Is an ADU cheaper than a home addition?
Not necessarily; because an ADU is a complete dwelling with its own kitchen and bath, per-project costs are substantial, though a garage conversion can lower them.
Can I rent out an ADU?
Often yes, but many jurisdictions restrict short-term rentals or require owner occupancy, so verify local rules before building.