Question: how much does it cost to convert roof space?
Answer: A loft conversion costs $7,000 to $67,600, averaging about $20,000. This translates into a price of $50 to $150 per square foot. You'll pay $9,000 to $34,500 to build a loft from scratch, and $14,300 to $67,600 to turn an existing one into a bedroom with ensuite bathroom.