The materials and labour for installing a downstairs toilet should run you about £950 and £1,500, respectively. Choosing inexpensive fixtures and stripping the area on your own can reduce the cost of putting a toilet in the basement. It's not a good idea to do a bathroom remodel on your own.
A basin installation will typically run between £250 and £300. Although a basin's average cost is £100 - £150, pedestal basins and washbasins may be found for as little as £99.
Installation of a toilet can take anywhere from one to four hours, depending on the plumber's skill and the sophistication of the fixture being installed.
Family baths should ideally be 2 x 2 metres. If you arrange your bathroom correctly, you should have plenty of room for your fixtures, fittings, and a few storage items. Nevertheless, the actual size depends on the space available in your home.