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oakland aduBuilder

ADU construction for Oakland and the Alameda County towns around it. Free on-site estimate and a written quote.

(510) 617-0908

Services

  • Garage conversion
  • Backyard cottage
  • Basement and interior ADU
  • Above-garage ADU

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  • Oakland
  • Alameda
  • Berkeley
  • San Leandro
  • Piedmont

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© 2026 Oakland ADU Builder

A garage you stopped parking in

We turn the garage you already have into a bright, legal home with its own door, kitchen and bathroom.

Call (510) 617-0908
A cream single-story house with a two-car garage and yellow climbing roses.

The shell is there. The work is in making it a home.

A garage already has a slab, walls and a roof, so a conversion usually costs less and moves faster than building new. The catch is everything a garage was never built to be: insulated, heated, plumbed and lit.

We start by checking the slab, the walls and where the utilities run. Then we draw a plan that brings in light, adds a kitchen and bathroom, and replaces the garage door with a wall and windows that suit the house.

Good time to call if

  • The garage holds boxes, not cars
  • You want a unit for family without building new
  • You are thinking about rental income
  • The slab and walls are in decent shape
A bright garage interior with a concrete floor, shelves, a refrigerator and a wheelbarrow.

How the conversion goes

  1. 01

    Check the garage

    We measure, look at the slab and walls, and trace the nearest utilities.

  2. 02

    Draw the plan

    Layout, windows, kitchen, bathroom and the new front for the old garage door.

  3. 03

    Permit

    Drawings go to the city and we answer comments until the permit is issued.

  4. 04

    Build and finish

    Insulation, plumbing, electrical, drywall, flooring and fixtures, then the final inspection.

What the work includes

  • Plans and permit

    Drawings, city submittal and revisions.

  • Slab and walls

    Floor leveled and insulated, walls framed and sealed.

  • Kitchen and bath

    Plumbing, cabinets, fixtures and ventilation.

  • Windows and entry

    The garage door replaced with a proper wall, window and door.

Questions about this job

Do I lose my parking?+

Often yes. Rules on replacing parking differ by lot and location, and we check the current requirements for yours at the visit.

Is the slab good enough?+

Most are. We check for cracks, drainage and moisture, and level the floor where it needs it.

Can it be rented?+

Many owners do. Rules can change, so confirm the current requirements before you sign a lease.

Related ADU types

  • Above-garage ADU
  • Backyard cottage

Book the free estimate

Tell us about your lot and what you want the space for. We come out, look and send a written quote.

(510) 617-0908

Free estimate and a written quote

  • Oakland
  • Alameda
  • Berkeley
  • San Leandro
  • Piedmont