According to Victoria Plum, the average cost of installing a new bathroom in the UK is pound;6,500. However, depending on the amount of work you are happy to do yourself, this could come much lower. Equally, larger spaces, those that need more renovation work and those that are using luxury products will see prices range from pound;7,000 - pound;15,000+.; Your location can greatly influence your total renovation cost. Bathroom renovations can happen in any part of the country, where cost of living can vary widely. *Indicative pricing, please whatsapp photo of existing for accurate pricing (depending on size if post waterproofing inspection is required). LOOK FOR LEFTOVERS Don’t pay for an entire slab of granite when all you need is a small piece to cover the top of a vanity. Stone fabricators like SMC Stone in Greenpoint, Brooklyn, and BCG Marble and Granite Fabricators condo galley kitchen remodel in Hackensack, N.J., often sell remnants.