Question: how much does it cost to build a garage foundation?
Answer: A garage foundation costs between $2,000 and $7,000 depending on the size. A standard 16' x 24' (1-car) garage foundation costs $2,500, a 24' x 24' (2-car) costs about $3,500, and a 36' x 24' (3-car) garage foundation runs $5,500 on average.