Not gonna discuss costs as your costs of addition vs selling are close enough. Other people mentioned that you could plan the garage to be a garage+storage and/or add another floor above it. Adding a one-car garage costs around $20,000; adding a two-car garage will set you back about $30,000 to $40,000; and building a three-car garage is likely to be in the $45,000 to $60,000 range.
It will cost as much or more than a new double garage, you just realistically cannot re-use much of the existing garage, you will need at least 3 new walls, and replace all the trusses or rafters, new roof, new door, etc. 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.
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.
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. Discover the cost of building a garage attached to house, key factors, smart upgrades, and tips to maximize your investment.
A garage addition can be a valuable investment for your home, adding extra space for parking, storage, or even a workshop. Whether you're a DIY enthusiast or planning to hire a contractor, this comprehensive guide will walk you through everything you need to know about garage additions in 2025, including types, designs, costs, and five creative garage addition ideas to inspire you. Explore our Attached Garage Addition Cost Guide to find detailed pricing for single, double, and triple car garages.
A detached garage will almost always cost more, with a typical price range of $19,200 to $33,600 for a standard two-car model. You have to pay for that fourth wall, a separate foundation, & potentially a whole new set of utility connections, which can add thousands to the budget. So why would anyone pay more for a detached garage? Flexibility.