The cost is not fixed; it is determined by many factors. The two basic factors are fitting/fixture costs and the building cost. Building cost includes labor, trades, building materials etc. The building cost is covered in the quotation we submit to you.
Project items like bathroom fittings, accessories and tiles are selected by the client. These are covered in a quote from the preferred supplier. Talking from experience, the average cost of tiles, accessories and fittings is $4,000 per bathroom and the building cost range from $12,000 to $14,000 per ensuite/bathroom.
The price of fittings depend on type and quality. For instance, pre-made vanities are cheaper compared to custom built cabinetry.