A bathroom is a question of where the water can go, and in Leicester the answer is complicated in the two Article 4 areas by the fact that the outside of the building is controlled.
An external soil pipe appearing on a street facing elevation in Stoneygate or New Walk is a permission question rather than a site decision, because those directions cover external alterations. Behind the building line there is far more freedom, which is why most of the bathrooms we relocate end up at the rear of the house.
Floors are the second constraint. Victorian upstairs joists were sized for a bedroom, not for a filled bath sitting on a tiled floor, and on the larger villas the spans are longer than average. Where a waste run means notching or drilling them there are permitted zones, and we will move a fitting a foot rather than cut a joist where it must not be cut.
Ventilation matters more than people think. An extractor discharging into a roof void puts the moisture straight back into the building, and in a tall Victorian room an extractor sized for a modern bathroom will not clear the air at all.
Tanking is not optional on a walk in shower, because tiles and grout are not a waterproof layer and never were. Our bathroom installations page sets out what a full refit involves.