Range from the cheapest single storey extension £47,000 (Rogers & Ross Building Service based in RM12) to the dearest single storey extension £67,000 (Smiths Property Maintenance based in RM12).
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 Upminster by posting a job with HaMuch and we will send it to extension builders in Upminster.
