How to Calculate Residential Refurbishment Cost per m²

In short: Refurbishment costs depend mostly on scope: a light refresh (decoration, flooring) costs far less per square metre than a medium refurbishment with a new kitchen and bathroom, and much less than a full strip-out with rewiring, replumbing and structural work. London costs are typically higher than the national average. Add professional fees, VAT (reduced to 5% for some homes empty for two years or more), building control and a 10 to 20% contingency. Get several quotes on the same specification.