It depends. Do you need stairs put in or do already have them? Is there electric and plumbing already in your loft? How many dormers do you want? Do you want a bathroom up there? Will you need scaffolding? What is access like to the property? That’s why the rough cost of £1200-£1500 per m2 is a good way to get a rough estimate but without plans you won’t get an exact cost. |