How Long Does a Bathroom Renovation Take?

In short: A full bathroom installation takes 7 to 12 working days from strip-out to handover. A like-for-like replacement in an unchanged layout is often nearer seven; moving the toilet, forming a wet room or changing the layout pushes it to twelve or beyond. The bathroom itself is out of use for most of that time.

01 How long does a bathroom renovation take?

A full bathroom installation takes 7 to 12 working days. That figure assumes one team working continuously — which is the single biggest variable, and the one most quotes do not mention.

Where a company subcontracts each trade, the same physical work can take three to six weeks of calendar time, because there are gaps between contractors. The plumber finishes on Tuesday, the plasterer cannot come until the following week, the plaster needs three days to dry, and by then the tiler has taken another job. None of that is extra work; it is all waiting.

02 What happens on each day of a bathroom renovation?

Each day of a bathroom renovation has one main job, and the table below shows them in order for the twelve-day version: a room where the layout changes and the walls need re-boarding. A like-for-like room compresses first fix and drying, and finishes nearer seven.

03 How do we run a bathroom, step by step?

We run every bathroom in the same eight stages, and the day numbers below are the ones we plan to on a full installation. The programme is written down with the quote, so you know before we start which days the toilet is out of use.

1. Survey, before day 1. We measure the room, find the soil stack, check which way the joists run and look at the pipework and the consumer unit. The fixed written quote and the working-day programme both come from this visit.
2. Strip-out, days 1 to 2. The old suite, tiles and flooring come out, the waste goes in our van, and floors and the route through the house are sheeted.
3. First fix, days 2 to 4. Water and waste run to where the new suite will sit, and any new circuit, extractor or shaver point is wired. A moved WC is drainage work under Part H; new circuits and work near the bath or shower are notifiable under Part P and certified by a registered electrician.
4. Boarding and plastering, days 4 to 5. Shower and bath walls go onto tile backer board, because adhesive makers want gypsum plaster several weeks old before tile goes on it. Walls outside the wet zone are skimmed and left to dry.
5. Tanking, day 5. The waterproof membrane goes over the shower zone, and over the whole floor in a wet room, and is left for the cure time its manufacturer states before any tile touches it.
6. Tiling, days 6 to 9. The setting-out is agreed with you first, then walls, then the floor. Grouting follows once the adhesive has set — hours for a rapid-set product, the next day for a standard one.
7. Second fix, days 9 to 11. Suite, taps, shower, screen, extractor, lighting and towel rail go in, and everything is tested for leaks and electrically.
8. Handover, days 11 to 12. Silicone, final joinery, a walk round the room with you, the certificates for any notifiable work, and a clean.

A like-for-like room with no new circuits, no drainage changes and no wet-room floor usually lands at 7 to 9 working days, because first fix shrinks to a day and nothing is re-boarded.

04 Where do these timings come from?

The working days come from our own jobs: they are how long each stage takes when one team does every trade. The waits inside them are set by other people — the tiling code of practice, the companies who make the adhesives, and the Building Regulations — and they are the same for any fitter.

• Tiling practice: BS 5385-1:2018, the British Standard code of practice for internal wall tiling, covers preparing the background, choosing the adhesive and leaving movement joints. It is the standard a tiler's work is judged against.
• Adhesive curing: the data sheet for the product used sets the wait before grouting. As an example of the spread, Palace Chemicals' Rapid-Set data sheet allows grouting about 3 hours after fixing at 20°C, while its Extra-Lite Standard Set data sheet gives 16 to 24 hours.
• Tiling onto plaster: Palace's Master-Grip data sheet says gypsum finishing plaster should be at least 4 to 6 weeks old before tiling, which is why wet walls go onto backer board rather than fresh plaster.
• Electrics: Approved Document P on GOV.UK sets out which electrical work in a home is notifiable.
• Water and hot water safety: Approved Document G.
• Drainage, including moving a WC or soil connection: Approved Document H.
• Extraction: Approved Document F sets a minimum extract rate of 15 litres per second for an intermittent bathroom fan.

Approved Documents are the official guidance for England, and every town we cover is in England. Wales publishes its own.

05 What makes it take longer

• Moving the toilet or soil stack — this is drainage work, not pipework, and it is the single change most likely to add days as well as cost.
• Forming a wet room — floor works and tanking cure times add three to five days over a standard bathroom.
• Structural changes, such as removing the wall between a bathroom and a separate WC.
• Large-format tiles, natural stone, mosaic or herringbone layouts, all of which take substantially longer to lay than standard ceramic.
• Materials arriving late or wrong — the most common cause of delay on jobs where the customer supplies the suite.
• Finding failed pipework, rot or unsafe wiring behind the old bathroom. Not common, not rare either, especially in pre-1960s housing.

06 What makes it faster

• Keeping the existing layout. If the toilet, bath and basin stay roughly where they are, days come off immediately.
• Having everything on site before day one. Nothing costs more time than waiting for a delivery.
• One team doing every trade, so there are no gaps in the schedule.
• Deciding the details early — tile layout, brassware finish, where the shelf goes. Mid-job decisions stop work.

07 Will you be without a bathroom the whole time?

The bathroom itself will be out of use for most of the installation, typically 7 to 10 working days. If it is the only bathroom in the house, that is the part worth planning around rather than the total job length.

A good fitter will sequence the work to reconnect the toilet as early as is practically possible and tell you in advance which days will be the most disruptive. In older terraced housing with a single bathroom, some customers arrange to be away for the busiest few days. Ask about this at quote stage — the answer tells you a lot about how organised the company is.

08 Questions worth asking before you book

1. Which trades are yours, and which are subcontracted?
2. What is the working-day estimate, and what would make it longer?
3. Which days will the toilet be out of use?
4. Will everything be on site before you start?
5. Who do I call if something goes wrong after completion, and how quickly can you get here?

The last one matters more than people expect. A fitter twenty-five miles away is far less likely to come back promptly for a snag than one from the next village, whatever they promise while quoting.