Drainage in Bedworth deserves more attention than it usually gets, for the same reason the foundations do. Rigid clay pipe does not tolerate ground movement, and this is ground with a history.
An older drain run on former coalfield ground may be in perfect order, and plenty are. It may equally have lost its fall somewhere along its length, or opened a joint, or cracked at a point nobody has ever seen. None of that necessarily shows at the gully or in the house. What it does do is turn a straightforward extension into an expensive one, because the moment you build over a run you have made it very much harder to get at.
So on this ground we put a camera down the existing system before anything is designed over it. A CCTV survey takes about an hour, gives you the fall, the material and the condition, and answers the only question that actually matters: is this pipe fit to be built on top of, or should it be repaired or rerouted while it is still accessible. Doing that afterwards means coming back through a new floor.
Surface water needs the same scepticism. A soakaway relies on the ground accepting water at a useful rate, and made up, worked and backfilled ground gives answers that vary sharply from plot to plot. We test rather than assume, because a soakaway that fills in autumn and stays full until spring is worse than no soakaway at all.
Where a run belongs to the water company rather than to you, which is more often than people expect, it needs consent before it is built over. Our drainage work page covers surveys, repairs and new connections.