Garage Conversion ADU Contractor in Ventura County

Have an unused garage?

A garage conversion can turn existing space into a legal ADU with living space, a kitchen, bathroom and sleeping area, if the property and existing structure meet the applicable requirements.

Because the walls, roof and foundation may already exist, a garage conversion can be less expensive than building a completely new detached ADU. There is also a rule that works in your favor: conversions of legally established structures are generally exempt from the setback standards that apply to new construction, which can make a conversion possible on a lot where a new detached building would not fit.

But not every garage is a good candidate.

What we evaluate before recommending a conversion

• Existing foundation
• Ceiling height
• Structure and framing condition
• Electrical service capacity
• Plumbing routes
• Sewer connection distance
• Windows and natural light
• Insulation and moisture
• Fire and building requirements
• Property setbacks
• Local zoning
• Parking rules in your jurisdiction

The parts that usually decide it

The slab. Garage slabs are often thinner than a dwelling requires, sometimes sloped to drain toward the door, and occasionally cracked. Sometimes it can be worked with. Sometimes it has to come out, and that changes the budget significantly.

Ceiling height. A dwelling needs habitable ceiling height. Once you add a finished floor assembly and insulation under the roof, a garage that measured fine when empty can end up short.

The sewer run. A detached garage at the back of a deep lot may be a long way from the lateral. That trench is real money and it is the item most often left out of the cheap quote you got somewhere else.

Parking. Converting a garage removes covered parking. Whether that is allowed, and whether replacement parking is required, depends on your jurisdiction and on exemptions such as proximity to transit.

Attached and detached garages

Both can work. A conversion of an attached garage often becomes an attached ADU, sharing a wall with the house but with its own entrance. A detached garage usually becomes a detached unit, which tends to give the occupants more privacy and is often what families want when a parent is moving in.