Range from the cheapest Fix a leak £120 (Z.M Gas and Heating Service based in SW17) to the dearest Fix a leak £400 (PAV Heating and Plumbing based in SW17).
Comparing plumbers estimates for Fix a leak 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 for fixing a leak in your home by posting your job to plumbers in Balham.