Cross

We moved into our 1950's house 20 years ago. In the deeds it was set that we have to let any housing built at the end of our garden have access for pipes for sewage. A bungalow has recently been built, we've allowed access in our garden as and when needed. The builder is running pipes from his property through our garden, which we expected and accepted. He is now saying he wants to put an access chamber with a manhole cover in the middle of our garden. I feel that is a bit different to running drains through. He will also be digging up our patio. I know he has to do work to an acceptable standard but I'm not happy especially about the manhole cover in our lawn. The deeds are all a bit vague, saying access to pipes. Are we legally bound to accept the access chamber? We've spoken to a solicitor who agrees it is a grey area and not very clear.