Thames Water have informed Building Control that a cantilever foundation would be acceptable provided that the augered pile within the cantilever foundation is 1.0m away from the public sewer. As the drive is 2.4 metres wide I don't see how we can proceed. They have provided a map of the sewer...
Thank you all for your posts your advice is much appreciated. I am currently waiting for a formal response from Building Control who in turn are waiting for Thames Water. I will post further news in due course.
Shytalkz, thanks for your advice and offer of help. Part of the problem is that nobody seems to know exactly where the 7.5 metre deep sewer is. I have not seen a drawing of its location in relation to my property or the proposed extension but believe it may run underneath the front corner of...
New to the forum, hope someone can help. I have been granted planning permission for a single storey side extension to my 1930's semi. Building control noticed that there was a public sewer in the vicinity and notified the water board who have carried out a video survey and granted build over...