We have a block which has the sewer man running across the west boundary of the block (on the side of the block), according to the local council, we need to build 1.5m away from the sewer line (where the sewer line is already 1m from our boundary (the fence).
For a biger house, our builder suggest to build over sewer but this will cost more - about $5000 for about 20m (length of the house) for special piers and slab design.
Has anyone build over sewer before and know how much it will cost?