build over sewer technical drawings

Hi all, Thank you for reading this. I have applied for a build over agreement with Welsh Water and have just had a sewer trace performed. We propose to build near, but not over the public sewer at the rear of the property. As you can see from the attached plan that I've drawn post sewer trace...

Hi, We're just about to get started on our extension and are trying to minimise costs by doing simple things and some plans ourselves. I did planning permission myself (approved), some builders are wanting quotes based on build over agreement with Anglian water for the sewer before we start...