What is the cheapest way to convert a garage?

Author: Minnie Maggio  |  Last update: Monday, December 8, 2025

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.

How can I convert my garage cheaply?

Install floor-to-ceiling windows in place of your garage door, add recessed downlights, and replace your garage's concrete floor with wooden flooring or laminate. Then, fill the space with an inviting corner sofa.

What is the cheapest way to enclose a garage?

You'll need to insulate and finish the floors, walls, and ceilings to bring the room up to code. You may also need to add windows and electrical wiring. Simple drywall is the most cost-effective finish for your walls. Insulate and use drywall on your ceilings for an interim solution before fully finishing them.

Do you need planning permission to turn a garage into a room?

Planning permission is not usually required, providing the work is internal and does not involve enlarging the building. If your intention is to convert a garage into a separate house (regardless of who will occupy it), then planning permission may be required no matter what work is involved.

What is the cheapest construction method for a garage?

Wood framing is the least expensive and easiest to build. In wet or moist environments you are most likely to have insect or mold issues. This tends to be the most popular choice as it is the least expensive. They can look like anything and can match anything.

The Cheap House You Can Build In Your Own Backyard

How to remodel a garage on a budget?

Affordable Garage Remodel Ideas on a Budget
  1. Decide whether or not to insulate. ...
  2. Choose affordable but practical material for your walls. ...
  3. Skip the finishing and line your garage with storage. ...
  4. Upgrade your floor in your garage remodel to make it look like new. ...
  5. Turn your garage into a multipurpose area.

How much does a garage conversion cost?

On average, a garage conversion costs between £18,000 and £28,300. Keep in mind that cost of labour is higher in London and the Southeast, sometimes by up to 20% on average. A garage conversion could add a lot of value to your home.

Can I legally convert my garage into a room?

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.

Do I need permission to brick up my garage door?

Generally speaking, planning permission is not needed to brick up a garage door if the work is internal and doesn't involve enlarging the house. However, if your home is listed, if you live in a conservation area, or you're converting the garage into a separate house, you will need planning permission.

Can I DIY a garage conversion?

Converting a garage to a living space is a big job that includes raising the floor, insulating the walls and adding heating, cooling and ventilation — as well as updating doors and windows. Before you begin a DIY garage conversion, think about every aspect of the job.

What is the most expensive part of building a garage?

The most expensive part of building a garage is typically the labor and materials. Skilled labor, including tasks such as framing, roofing, and installing electrical systems, can significantly drive up costs.

What is the most affordable garage?

What Garage Building Solution Is Most Budget-friendly? Building in the pole style is one of the easiest and most economical ways to construct a garage. These are frequently called pole barns or post-frame buildings, and many people think they're better than conventional stick-built garages.

What is the best flooring for a garage conversion?

As general advice, if you're planning on using the converted garage solely to work in, ceramic tiles are a good way to go. They're easy to maintain, durable, and are great for underfloor heating. Flooring for garage conversions that require a dual purpose, we'd suggest either floor tiles or vinyl flooring.

How do I insulate my garage?

To insulate garage walls:
  1. Use a hammer and a screwdriver to remove screws and hooks from the walls.
  2. Remove the wall covering, if any. ...
  3. Check your walls for holes, cracks and gaps.
  4. Cover the area with a sealant.
  5. Let the sealant dry before starting the installation process.
  6. Apply the insulation of your choice.

What is the U value for garage conversion?

Existing walls need to achieve a U-value of 0.3, existing roofs a U-value of 0.16 and the existing floors should achieve a u-value of at least 0.25. Any new walls or floors require a U-value of 0.18 and new roofs a U-value of 0.15.

Do I need a permit to turn my garage into a room?

Because a renovation can disrupt electricity, power, or water lines. The Los Angeles building code for garage conversions matters a lot in obtaining a permit. That's why you need to obtain a building permit from the local Department of Building and Safety office and speak with the code official stationed there.

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.

How can I enclose my garage without removing the door?

Build a Wall

The main reason why walls are often used to create enclosed spaces is that they provide privacy and security. The wall can be built out of any sturdy material, such as concrete, brick, or wood. Once the wall is erected, you can install hinges on the door so that it can open and close as necessary.

Is a garage conversion worth it?

Yes, converting a garage will often increase the property value. This is because you will typically be taking an underutilised space and transforming it into a more functional living space, whether you add an extra bedroom, living area, or home office.

How long does it take to convert a garage?

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.

How much does it cost to insulate a garage?

Insulating a garage costs around $4,700, with costs commonly ranging from $1,900 to $7,700 or more. Insulating your garage carries many benefits, including energy-loss reduction, adding usable space, and protecting your vehicles and stored items.

How much should a 24x24 garage cost?

Site-Built 24×24 Garage Cost: Around $25,000

This price point can fluctuate depending on the custom work you have us do and the additional upgrades you request. However, $25,000 is a good entry point for a custom, site-built garage.

Is a 20x20 garage big enough for 2 cars?

A 20×20 Garage can hold two smaller cars, but you will have very little extra space around the cars for getting in and out and for storing extra items. See your options for a 20×20 garage below.

Previous article
Do electric space heaters give off toxic fumes?
Next article
What grows faster soil or hydroponics?