Range from the cheapest single storey extension £40,600 (RBB Building Ltd based in CR4) to the dearest single storey extension £55,000 (K&M BUILDING CONSTRUCTION based in CR4).
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 Merton by posting a job with HaMuch and we will send it to extension builders in Merton.
