I hired Cupertino Plumbing recently to check for leaks in the plumbing system of the house. They were very thorough about looking at the various places where it might happen and in the end, no leaks were found. This was my first time hiring them for this kind of work, but about 15 years ago they did re-piping throughout the whole house. The re-piping prices were pretty high at the time, but the price for our recent service was just based on an hourly rate and was not unusual at all.