In short, most extension projects cost around £1,350-£2,250/m² of new internal space. So a 30m² kitchen extension could be estimated at fileslib. How much is an extension per square metre UK? Home extension cost per square metre Speaking to our experts, we have established that the basic price of building an extension is £1,300 to £1,600 per square metre. So, for a 20msq extension (4m x 5m), the cost will range from £25,500 to £32,500. These prices don't include VAT, charged at 20%. Bump-out: A bump-out is a small extension of an existing room. The cost depends on the house's existing structure and materials, but the average Additional Costs And Home Extension Costs Benefits Of A Home Addition
From experience, £2000 per m2 is a now a more realistic estimate for a basic / mid-range house extension. In London and some parts of the South Say 4m X 5m Finishes And Fittings Finding The Right Architect
How much does an extension cost Ireland 2022? Single-storey extensions: plan from around €2,500 per m² ex Vat for building work for a basic single-storey extension.