how much does house extension cost
As a rough guide, house extensions cost around Â£1000 per square metre based on a single storey extension. This cost should include basic electrics and plumbing. The cost actually reduces if the extension is more than a single storey as the extra storeys are easier to add floor space to.ocation: Depending on where you are in the UK, youâll find house extension costs can fluctuate. On a more local level, you may need to think about access and how remote your home is.