Loft extension COST GUIDE
Set a preliminary budget for your room-in-the-roof project with our benchmark pricing model
One of the core questions on any building project is how much you’ll need to pay to get the job done – and whether you’ll be able to recoup what you’ve spent. A wellconceived loft conversion can be one of the most effective routes to adding value to your home, with the potential to give a 20% return on your investment if you get it right.
The following figures provide a rough starting price for a small bedroom-only loft conversion (of around 20m2 ). However, these could easily double or triple depending on the size and complexity of your project:
• Simple rooflight conversion from around £27,000 (£1,350 per m2 )
• Simple dormer conversion from around £35,000 (£1,750 per m2 )