Can I convert my garage into living accommodation?

Author: Trystan McKenzie  |  Last update: Tuesday, November 4, 2025

As long as you obey building code requirements, you can create any type of living space with your garage remodel. Depending on the zoning of your home, you might have to jump more hurdles when building an independent living space, such as an apartment, than converting your garage into a bedroom.

Do I need planning permission to convert a garage into living space?

Planning permission is not usually required to convert your garage into additional living space for your home, providing the work is internal and does not involve enlarging the building.

Do you need a permit to turn a garage into a living space?

Since California has passed the new ADU laws this year, usable rooms like garage conversions can be used as a source of passive income. Even if you're only planning on converting the garage to an additional bedroom or home office, permits will be needed for residential construction.

How much does it cost to convert a garage into a living room?

A garage conversion costs $15,100 on average but can range from $5,500 on the low end to over $38,500. Conversion costs ultimately depend on factors such as location, labor, materials, and permit pricing.

Are you allowed to convert a garage into living space?

As long as you adhere to building codes and receive the proper permits, your legal garage conversion may improve your home value. However, keep in mind you'll be removing parking space that future buyers may desire. Find out how much the garage conversion will impact your property taxes.

Do's and Don'ts Converting a Garage into an Apartment, Rental, or AirBnB

Can I use my garage as a living room?

As long as you obey building code requirements, you can create any type of living space with your garage remodel. Depending on the zoning of your home, you might have to jump more hurdles when building an independent living space, such as an apartment, than converting your garage into a bedroom.

Can I turn my garage into a rental space?

Yes, in California your garage conversion can most definitely become a living space! You have two options for converting your garage: A guest quarter. An accessory dwelling unit (ADU)

Is it cheaper to convert a garage or build an extension?

A garage conversion is often cheaper and takes less time than a standard house extension because it does require additional outside construction work.

How much does it cost to add plumbing to a garage?

Adding plumbing to a detached garage or shed costs $1,100 on average. Most spend between $900 and $1,300. Adding plumbing to a detached garage or shed roughly 20 feet away from home will cost $1,100 for the average homeowner.

Can you convert a garage into a habitable room?

Adding windows to a garage and converting it to a habitable room (e.g. home office, bedroom) will not likely require full planning permission. Extending the building outward will likely require planning permission due to increasing the building footprint.

Do you need planning permission to put a toilet and shower in a garage?

If you're converting a non-residential space, like a loft or garage, into a bathroom, planning permission might be required. This is because you're changing the use of the space, which could impact the overall property.

Can I build a bedroom in my garage?

But thanks to California's recently relaxed ADU laws, converting a garage into a bedroom is a viable option for many homeowners to add some much-needed space to their homes.

How long does a garage conversion take?

On average, a garage conversion takes as little as 4-6 weeks. Compare this to a loft conversion (8-10 weeks) or rear extension (10-14 weeks) and you can appreciate why homeowners love how quickly this project can be turned around.

Is it legal to convert a garage into a room?

Living in a garage in California is only legal if the garage has been converted to a habitable space through the proper channels. ... Renovating the garage without the proper permits may not count as a legal residence either.

Can I turn my garage into a granny flat?

Generally speaking, to change the use of a detached garage into a habitable space (which is a space that has sleeping, washing and/or cooking facilities), you'll need planning permission. That's almost always the case.

How to turn a garage into a room cheaply?

Typically, the cheapest type of garage conversion will just involve blocking up the garage doors and finishing out the walls, floors, and ceiling with insulation, drywall, carpet, or other flooring material. Think of a bonus room, family room, playroom, game room, or man cave.

Can I put a toilet and shower in my garage?

Technically it is possible to add a bathroom to a garage- it just all comes down to the time, work and budget available. In many cases you might be limited due to the plumbing location for water and waste services.

How much does it cost to convert a garage to a living room?

Cost to Turn Garage into a Living Room

Turning a garage into a living room costs $5,000 to $10,000 on average. This is similar to converting a garage into a simple bedroom or office, as they share the same basic requirements—a window, electrical wiring, insulation, drywall, heating/cooling, and updated flooring.

Can I have a drain in my garage?

All municipalities have their own specific codes and guidelines for installing drains into garage floors, therefore it may or may not be an option. Most restrict floor drains due to the runoff of toxins, oil, and gasoline that can potentially infiltrate the greater sewer system.

Will my house lose value if I convert the garage?

The value an ADU adds to a property can be substantial and varies based on several factors including its purpose, size, type, and geographical location. In markets like California, an ADU can instantly boost a home's value by $200,000 to $500,000, with projections for further appreciation over time.

Is it a good idea to convert a garage to living space?

If you have no plans to move anytime in the near future, converting your garage into a more livable space can certainly add a great deal of personal enjoyment to your home. But if you're thinking of selling your home and moving within the next few years, you might want to skip this project.

Can I convert my garage without planning?

Planning permission for a garage conversion is not necessary in many cases, although it is always best to double check with your local authority first. Most integral garage conversions fall under Permitted Development which means there is no need to make a planning application.

Do people rent out their garage?

Rent your garage for storage

People will be more likely to rent from you if you have cameras and security. Before listing your garage as a storage rental space, get any necessary permits and familiarize yourself with your local zoning laws to make sure it's legal to do so.

Can I convert my garage into an Airbnb?

Converting a garage into an Airbnb room is a cost-effective way to add value to your property while generating income. The process requires minimal investment compared to other home renovation projects, and the return on investment can be substantial.

How long does it take to convert a garage to an ADU?

Timeline for Conversion

If you envision a large ADU, estimate three months for the planning and permitting stages. The construction can span six months. From start to finish, a garage conversion ADU can take up to nine months.

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