Antony Jordan
Hi there. firstly i would explain your concerns to your neighbour and then ask to see the building reg's from the council to prove the work has been done properly, if its been done to reg's you should have no concerns because everything will be supported and finished in the correct way... If no reg's your neighbour is in a world of trouble with the council and his house insurance and your insurance as it may put your house under risk..... but before all that just ask.