Hi all, I'm about to purchase a ground floor garden flat, in a two-storey period building for a great price, but it's in pretty poor condition. To make the most out of the flat, I need to re-jig the layout and move the bathroom. This is going to cause problems in terms of plumbing as the current position is very close to where the waste pipes are located, and I'll be moving the bathroom across the flat, approximately 6-7m away. Please see below the current layout and the anticipated future layout Current: Future: How easy/difficult is digging trenches and laying all the new pipework that will probably be required? How much might that cost and would this take a lot longer than the current 5-6 week refurb target? Thanks in advance, R.