Average Cost Of Adding On A Garage

Average Cost To Build a Garage Garage construction costs depend on whether you choose a basic build or a full renovation. A 250-square-foot single-car garage costs about $9,917 for a basic build, while the same size garage can cost up to $22,900 for a complete renovation. Adding plumbing features significantly increases functionality but also adds to the cost of building a garage attached to house.

A simple utility sink installation runs $500-$1,500, while a proper floor drain system costs $800-$2,000. A garage extension costs $60 to $120 per square foot, or $9,600 to $24,000 on average to add another vehicle bay to the existing structure. The cost to extend a garage with a second-story addition is $60,000 to $200,000+, depending on the room size and features.

A garage extension is a great way to add space for work, hobbies, and storage. Learn how much a garage extension costs so you can budget accordingly. The average cost to build a garage in 2026 ranges from about $18,000 for a basic one-car model to well over $70,000 for a large, custom three-car garage.

A standard two-car garage (24′ × 24′) typically costs between $35,000 and $50,000, depending on size, materials, local labor rates, and whether it's attached or detached. All prices updated for 2026. Average Cost of Garage Addition: A Comprehensive Guide for Homeowners Adding a garage to a home is a popular way to increase property value, improve storage options, and provide vehicle protection.

The average cost of a garage addition varies significantly depending on size, materials, location, and design preferences. Understanding these factors helps homeowners plan effectively and budget. Explore our Attached Garage Addition Cost Guide to find detailed pricing for single, double, and triple car garages.

Building a garage with a living space, like a suite or apartment, costs $125 to $250 per square foot in addition to the cost of the garage. This adds another $60,000 to $270,000 to the total project cost and includes the design, enhanced finishes, specialized plumbing, and electrical work needed for a functional apartment or suite. The national average cost of building a garage addition ranges from around $3,038-$4,436, and most people pay around $3,675, according to Thumbtack data.

The total cost depends on various factors, including the size of garage, materials used, and your chosen features. On the high end, a new garage costs $13,057-$17,520 to build. Discover the true costs of adding a garage to your home.

From materials to labor, our guide breaks down all the factors you need to consider for your garage addition project.