Feasibility

Can I convert my garage?

Direct answers to the questions homeowners ask most. These are general — your city's rules and your garage's condition decide the specifics.

Can an attached garage be converted?

Usually, yes. Attached garages are among the most common conversions because they already share walls with the home and sit close to existing plumbing and electrical. You will still need permits and must meet code for habitable space.

Can a detached garage become an ADU?

Often, yes, where local rules allow. Detached garages are frequently turned into ADUs. Expect to trench utilities from the main house and to follow the ADU regulations in your jurisdiction.

Do I need permits?

In almost all cases, yes. Turning a garage into livable space is a change of use that typically requires permits and inspections. Skipping permits can cause problems at resale and with insurance. Confirm with your local building department.

What happens to the garage door?

The opening is usually filled with an insulated wall, often with a new window or entry door. Some homeowners keep the door for appearance or to keep the change reversible.

Do I need plumbing?

Only if your use needs it. An office, gym, or studio needs none. A bathroom, kitchen, or ADU does — and the distance to existing lines drives the cost.

Can I add a bathroom?

Yes. It means running supply and drain lines and meeting code. Placing the bathroom near existing plumbing keeps costs lower.

Can I rent the converted space?

Sometimes — only where local rules permit, and typically only if the space is a legally permitted dwelling such as an ADU. Verify with your city before counting on rental income.

How much does it cost?

It ranges widely. A simple non-plumbed room costs far less than a full ADU. Our cost guide breaks down what drives the price.