Range from the cheapest single storey extension £39,000 (Ghani Constructions based in IG1) to the dearest single storey extension £53,880 (Maconti Design 3000 based in E12).
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 IG4 by posting a job with HaMuch and we will send it to extension builders in IG4.
