The cost of a home addition in Miami, FL, is influenced by various factors including the type of addition, materials used, and the project's complexity. Smaller additions like small sunrooms may cost around $10,000 to $40,000, while larger projects like a second-story addition can range from $50,000 to $200,000 or more. Blue Builder provides detailed quotes, helping clients understand where their investment goes and how to optimize their budget for the best possible outcome.