Range from the cheapest single storey extension £47,000 (Ian Shillingford based in E10) to the dearest single storey extension £63,000 (Shadbolt (Design & Build) Limited based in E10).
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 Clapton by posting a job with HaMuch and we will send it to extension builders in Clapton.
