Site-Built vs. Prefabricated There are two options for building a new garage: building the structure on-site, or purchasing a prefabricated garage. Prefab garages, or garage-building kits, are easier ...

Building a garage typically costs between $16,281 and $39,472, with a national average cost of $27,867. The garage size will have the largest impact on total cost. Other cost-affecting factors include ...