How Much Does a Garage Conversion Cost? [2025 Data]

Factors That Impact Garage Conversion Cost

Before you get too far along in your garage conversion journey, know that many factors can impact the total cost of turning a garage into a living space. The square footage of the garage plays the biggest role, with larger spaces requiring more materials and labor. Permits, which often range from $300 to $1,000, will probably be needed depending on your local requirements. The type of conversion, whether it’s a simple bedroom or a fully equipped in-law suite with plumbing and electrical work, will also substantially impact the budget. Material quality, including choices for flooring, insulation, and finishes, impacts costs, as do labor expenses, which often constitute up to 60% of the total cost. Other upgrades like HVAC installation and new windows and doors will also stack on costs. Each of these factors depends on your needs and goals, but we’ll cover them all in greater detail below.

Garage Conversion Cost  by Square Foot

The average cost to convert a garage to a living space is around $40 per square foot, but that number can range from $25 up to $75 or more, depending on your conversion type, the quality of the materials, and more. That means smaller garages will naturally cost less than larger ones.

A typical one-car garage is 240 square feet and will cost around $9,600 to fully finish. The typical two-car garage is around 440 square feet and will cost around $17,600 to fully finish. However, costs will vary depending on the actual length and width of the garage.

Garage Conversion Cost by Project Type

Not everyone has the same reason for converting their garage into a living space. While you might want the kitchen of your dreams there, someone else is thinking about how they’re going to set up their new office space. The end goal of your project greatly influences the price since you’re going to need extra plumbing for one project or extra electrical work for a different one.

Bedroom

Converting the garage into the bedroom is the most popular project to tackle. A simple bedroom will run you around $12,000. If this is going to be your new primary bedroom with a bathroom included, you’re looking at closer to $25,000.

Office

Tired of using your kitchen table as an office desk every day? Looking to create a new office space in your old garage will run you about $5,000. This space doesn’t typically require plumbing, framing for closets, or mandatory points of egress, so you’re mostly paying for the extra electrical work, insulation, and finishing touches.

Entertainment Room

Maybe you’re looking to create the perfect hangout spot for all of your friends and family. In this case, you’re looking at spending around $7,500. Family areas may require emergency exits, so the extra costs will come with the benefit of safety.

Utility Room

A utility room is an excellent place to do laundry (or at least hide it from guests). It’s typically easy to get to, and you don’t have to listen to the washer and dryer going while you’re inside. Adding a utility room will set you back around $6,000, as often requires fewer finishing touches than traditional living space.

In-Law Suite

Converting a garage into a full in-law or guest suite—or a guest house in the case of a detached garage—costs $20,000 to $50,000 on average. 

At the lower end of the range, a basic conversion will include insulation, drywall, flooring, and a bathroom. A mid-range conversion with a budget of $30,000 to $40,000 would add amenities like a small kitchenette and additional electrical and plumbing work. For a complete in-law suite with a full kitchen, high-end finishes, and potentially even a separate HVAC system, the cost can reach $50,000 or more. 

Gym

One of the simplest conversions you can do is an at-home gym, which should cost around $6,000, excluding your gym equipment. The expenses will go toward cushioned flooring you place over your garage floor and finishing touches, like installing drywall and windows for ventilation. Your price could be higher if you want to add on a luxury spa for use after your workouts, or a shower for cleaning up before going back into your main living area.

Cost to Hire a General Contractor for a Garage Conversion

A general contractor is the most fitted pro to hire for converting a garage, as it’s a project that requires coordinating different trades and meeting local regulations. Plus, a general contractor can help get the job done on schedule and within your budget. 

In most cases, around 50% to 60% of your total costs—or $8,200 to $10,000 in the case of a garage conversion—will go toward hiring a general contractor. Labor will vary based on the cost of living in your area as well as the length of the project.

Some other pros you may consider hiring for converting a garage are:

• Architect: They can create a detailed plan and layout that maximizes the use of your space.

• Electrician and Plumber: Licensed electricians and plumbers are essential for installing electrical systems and plumbing.

• Interior Designer: An interior designer can help select finishes, colors, and furnishings that create a cohesive and appealing living space. 

Cost to Convert a Garage Into a Living Space by Location 

Cost differences between states will come down to the cost of living, the cost of local materials, and permit prices. Common prices to convert a garage into a living space in different states are as follows:

Additional Factors That Influence the Cost to Convert a Garage Into a Living Space

There are quite a few factors that can influence the cost to convert your garage into living space, including materials, labor, how you want to use your new room, and more.

Permits

Permits vary based on the project and your location, but you can expect to pay between $300 and $1,000 for a garage conversion permit.

Electrical

One of the biggest expenses in your garage conversion will be connecting utilities to the new area. The electrical component of this will cost between $1,000 and $3,000, which includes adding new outlets, light fixtures, and potentially upgrading the electrical panel. The total price depends on whether you have existing wiring in the garage. 

Plumbing

If you’re converting to an in-law suite with a bathroom or kitchen, adding or upgrading plumbing costs $1,500 to $4,000. This involves running new pipes, installing sinks and toilets, and ensuring proper drainage. Like electrical work, plumbing costs depend on what your garage was already equipped with. 

Doors

Replacing the garage door with a standard entry door or sliding glass doors costs $200 to $1,000. This includes any necessary framing and finishing to integrate the door into the existing structure. Note that for some conversions, like home gyms, you may not need to replace the existing roll-up garage door. 

Windows

Installing new windows will bring natural light into your converted garage and improve ventilation. Depending on the number of windows, their size, and any custom features you choose, the cost will be between $500 and $2,000 on average. 

Insulation

Proper insulation is vital to keeping the converted room at a comfortable temperature, limiting noise, and reducing energy bills. It will cost $500 to $2,000 in total, or around $0.40 to $6 per square foot. 

HVAC

You may need to install a new HVAC unit or extend existing ductwork, depending on your home’s current system. If you don’t have existing ductwork, installing a ductless mini-split system is likely the best option, since it allows for independent temperature control in the space without the high cost of adding ducts. For a larger garage, you may consider extending an existing central HVAC system, but it will cost more. The most affordable option is adding a portable heater and air conditioner, which is best for short-term use but won’t provide the same temperature control as other systems. 

Costs for each HVAC system are:

• Ductless Mini-Split: $1,500–$4,000

• Central HVAC: $3,000–$5,000

• Portable Heater/AC: $300–$1,000

Flooring

Choosing the right flooring can transform the look and feel of your converted room. It will cost $1,000 to $4,000, depending on the size and type. Popular options are hardwood, laminate, tile, or carpet. 

Drywall

Adding drywall costs $1,000 to $3,000, or around $2 per square foot on average, including hanging, taping, mudding, and sanding. While drywall is a key part of an in-law suite conversion, a home office or home gym conversion may not need it.

Converting a Garage Into a Living Space Yourself vs. Hiring a Pro

If you were able to do all the work yourself, you could plan on bringing down your garage conversion cost from $16,665 to around $8,300, as labor accounts for about 50% of the project total. However, this is a project you’re going to want a garage remodeling contractor near you to handle. They’ll help you plan out the garage conversion correctly so you’re maximizing your new living area. They will also sure the proper permits are pulled and that the utility lines are all run properly.

There are ways to cut remodeling costs, though:

• DIYing demolition

• Adding finishing touches yourself

• Organizing your garage and cleaning it out before construction begins

• Limiting how much utility work your contractor needs to do

• Opting for more affordable flooring options and other materials

• Leaving your garage door in place or installing a garage door alternative rather than framing and closing off the wall opening

Ways to Save Money on Garage Conversion Projects

There are a few ways you can save money on your garage conversion project. Try these tricks to cut some costs:

• Do simple DIY work to save on labor fees.

• Choose basic finishes instead of opting for high-end materials.

• Shop around for the best prices and compare quotes from at least three pros.

• Consider energy-efficient options that may offer rebates.

• Repurpose any existing materials that are in good shape.

• Convert only part of your garage if you don't need the entire space.

Does a Garage Conversion Add Value to a House?

Yes, a garage conversion typically adds value to your home since you’re increasing the amount of liveable square footage. Generally, you have an ROI of about 80% with garage conversions. So if your project costs $10,000, around $8,000 is added to the value of your home. The actual value added to your property will depend on the type of renovation. Things like adding a kitchen and a bedroom/bathroom combination will usually be more valuable than office space or an at-home gym.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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