CONSTRUCTION SERVICE
ADU Construction
Accessory dwelling units (ADUs) add a rentable unit or space for family on your existing lot. Waterfront Construction builds detached ADUs, attached units and garage conversions, and helps you through the permit process.
When this is the right place to start
Best fit when you want rental income or space for family without moving, and your lot has room for a second unit.
- Detached backyard ADUs and guest houses
- Garage-to-ADU conversions
- Attached ADUs and junior ADUs inside the existing home
- Utility connections, kitchen, bathroom and finishes
Useful details to have ready
- Your address, so we can check lot size and city rules
- Photos of the yard or garage you have in mind
- Whether the unit is for rental, family or a home office
Common questions about adu construction
Can I build an ADU on my lot?
California law allows ADUs on most single-family lots, but setbacks, size limits, utilities and parking rules vary by city. We start by checking your address against the local rules.
Is a garage conversion easier than a new detached ADU?
A conversion reuses an existing structure, so it can be simpler, but the garage still has to meet code for a living space, which can mean new foundation work, insulation, windows and utilities.
Do you help with ADU permits?
Yes. Waterfront Construction helps customers obtain building permits for ADUs, and the drawings and review steps depend on the city.