Range from the cheapest single storey extension £51,800 (Peter Cox Ltd - Uxbridge based in UB8) to the dearest single storey extension £54,040 (GS Design & Developments Ltd based in UB10).
Comparing extension builders estimates for fitting a downstairs toilet gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to build a single storey extension in Hillingdon by posting a job with HaMuch and we will send it to extension builders in Hillingdon.
