Well one large bathroom (minimal tiling) and three ensuites (tiny tiny ones with tiny basins but with shower cubicles)? Soil pipes are in place or near enough to not cause a headache.
We've had one quote of just labour of £23k a second labour only cost at only £11k. WTF?? I had an estimate last year for the bathroom and one en suite at 8k so hoping the cheaper one sounds about right, but now I'm not sure...