Hi guys i have a question,i am planning on having a double side extention,the space available is 2.3m upto the boundary fence which is mine.I understand that the rootings need to be 600 wide and as deep as i need to go.My problem is my neigbour have attached there carport to the fence on there side,i want to take the fence down and replace the boundary fence with wall from my extention.The question is as i want to go right up to the boundary do the footings have to be 150 into there side or lay footings and lay bricks from edge of footings or do i have to be in 150 from edge of footing .hope all this makes sense