Double Storey Side Extension Cost Calculator
Double Storey Side Extension Cost Calculator Ground Floor Size (square meters): First Floor Size (square meters): Cost Per Square Meter (£): Calculate Cost Here’s an estimation of the cost of a double storey side extension in the UK: Item Estimated Cost (GBP) Architectural Plans £1,000 – £3,000 Planning Permission £200 – £500 Building Regulations £500 … Read more