Bathroom renovation sits in an interesting category of home projects: most people only do it once every ten or fifteen years, which means they go in without much experience of what it actually involves. Quotes vary significantly, the terminology can be confusing, and it’s hard to know what’s a fair price for what. Here’s a realistic guide to planning a bathroom renovation – what it typically costs, how to choose materials, and where to source them.

How much does a bathroom renovation actually cost?

A standard bathroom refresh – new suite, retiling floor and walls, replacing fixtures – typically costs between £3,000 and £6,000 for supply and installation. A full renovation with structural changes, underfloor heating, or a wet room conversion can push well past £10,000 depending on the scope.

The biggest cost variables are: how much pipework needs moving, whether the existing layout is being kept, and who is sourcing the materials. Getting three quotes is standard advice, and it’s still worth following. Significant differences between quotes usually mean each contractor is scoping the job differently – asking each one to break down what is and is not included helps you compare fairly and reveals any assumptions you were not expecting.

Choosing the right plumbing materials

Pipes and fittings

Copper remains the standard for visible and accessible pipework homes, particularly where it will join existing copper runs in an older property. MLCP (multi-layer composite pipe) is increasingly used for concealed runs – under screed or behind finished walls – where flexibility and corrosion resistance matter more than aesthetics. Push-fit plastic fittings speed up first fix considerably on long runs through joists and studwork. For connection points that may need to be accessed later – isolation valves, appliance feeds, service valves – compression fittings are the practical choice. Sourcing from a specialist trade supplier rather than a general DIY store typically gives you better availability, more consistent quality, and often comparable prices.

Fixtures

Whether you go for a close-coupled or back-to-wall WC, a freestanding or panelled bath, concealed or exposed shower valves – these are largely style and budget decisions. What matters more from a plumbing standpoint is whether your existing pipework can actually serve the layout you have in mind. Moving a WC more than a short distance means extending the soil pipe, which adds meaningful cost and complexity. A plumber can tell you what is and is not feasible in a short site visit before you commit to a plan, which is worth doing before you fall in love with a layout that will cost significantly more than you expected.

Finding a plumber and sourcing supplies

A WaterSafe-registered plumber or a member of the Chartered Institute of Plumbing and Heating Engineering (CIPHE) is the right starting point for any bathroom renovation. Recommendations from local community Facebook groups or trusted neighbours tend to be more reliable than general review platforms, where the pool of recent reviews for individual trades can be thin in smaller areas.

Once you have someone you trust, agree upfront on who is sourcing materials. Some plumbers prefer to supply everything within their quote; others are happy for you to source your own, which gives you more control over quality and budget. Having materials on site and ready before work starts is one of the most effective ways to keep a renovation on schedule – time spent waiting for a trade counter run is time on the labour bill.

For plumbing supplies including pipes, fittings, valves and fixtures, https://www.monsterplumb.co.uk/ is a trade supplier stocking a broad range with fast UK delivery. Ordering ahead of time means your plumber arrives to a job that’s ready to go.

Tips for keeping costs down

Keep the layout as close to the original as possible. Moving the soil stack or relocating the main hot and cold feeds adds significant cost and complexity – it’s the single most expensive decision in most bathroom renovations.

Source sanitaryware yourself and compare prices before committing. It gives you a reference point if a plumber’s supply quote comes in high, and many suppliers run regular promotions on suites.

Order a materials contingency of around 10–15%. Tile breakage, additional fittings, cuts you didn’t anticipate – the contingency always gets used.

Time the renovation outside peak season if you can. Spring and summer are the busiest months for bathroom and kitchen trades. Autumn bookings often give you more scheduling flexibility and, in some cases, more competitive rates.

Get everything agreed in writing before work starts: a clear schedule of works, a payment structure tied to milestones rather than a single upfront sum, and written confirmation of what happens if the scope changes mid-job.