To find out how much a loft conversion costs in 2025, the Building Cost Information Service (BCIS) provided us with typical costs for different sizes of rooflight and dormer conversions. We also share ...

To help, we've spoken to the experts to compare how these two projects compare in terms of cost, impact and ... desirable home trends.' Does an extension or a loft conversion add more space?

You will have to be much savvier ... is typically a loft conversion and this tends to add bedrooms and a bathroom, which buyers appreciate. As a rule of thumb, loft conversions cost £1,350 ...