How much does it cost to build an apartment above a garage?

The cost to build an apartment above a garage can vary significantly based on location, size, materials, and design. On average, you might expect to spend between $100 to $300 per square foot. For a typical 600 to 800 square foot apartment, this could result in a total cost ranging from $60,000 to $240,000. Additionally, factors like permits, utilities, and local construction codes can influence the overall expense.