How Long Does a Bathroom Renovation Actually Take?
The Honest Answer
A standard bathroom renovation -- ripping out everything and starting fresh -- takes 2 to 3 weeks for a straightforward job. A larger bathroom, significant plumbing changes, or structural work can push that to 4 or 5 weeks.
That is actual working time. It does not include the lead time on ordering sanitaryware, tiles, and fittings, which can add 4 to 8 weeks before any tradesperson sets foot in your house. Order everything before work begins. Waiting for a basin to arrive while your bathroom is a building site is miserable.
Here is how the weeks typically break down on a Clapham terrace bathroom.
Week 1: Strip-Out and First Fix
Days 1 to 2: Strip-Out
Everything comes out. The old bath, basin, toilet, tiles, and often the plasterboard behind them. In Victorian properties, you may find lath and plaster walls, old lead pipework, or joists that need attention. This is when surprises appear.
Common surprises in Clapham terraces: rotten floor joists around the toilet, lead supply pipes that need replacing, and asbestos in old floor tiles or pipe lagging. If you find asbestos, stop work and get a licensed removal contractor. This is not optional.
Days 3 to 5: First Fix Plumbing and Electrics
The plumber moves waste pipes and water supplies to their new positions. The electrician runs cables for lighting, the heated towel rail, an extractor fan, and any shaver sockets. If you are moving the toilet to a different wall, this stage takes longer because the soil pipe route needs to work with gravity.
This is also when any structural work happens -- strengthening joists to support a heavy freestanding bath, for instance, or building a stud wall to conceal pipework.
Week 2: Waterproofing, Boarding, and Tiling
Days 6 to 7: Boarding and Waterproofing
Cement-based backer board goes up on the walls in wet areas (around the shower and bath). The floor is levelled if needed. A tanking membrane or liquid waterproofing is applied to the shower area. Do not let anyone skip this step -- failed waterproofing is the number one cause of bathroom problems down the line.
Days 8 to 12: Tiling
Tiling is the longest single stage. A full bathroom -- floor and walls -- takes a skilled tiler 3 to 5 days. Large-format tiles are faster to lay but heavier and less forgiving on uneven surfaces. Intricate patterns, niches, and feature walls add time.
Grouting happens once the tiles are set, usually the day after the last tiles go up. The grout needs time to cure before the room gets wet.
Week 3: Second Fix and Finishes
Days 13 to 15: Second Fix
The toilet, basin, bath or shower tray, taps, shower valve, towel rail, and all fittings are installed. The electrician returns to fit lights, the extractor fan, and any accessories. Silicone sealant goes around the bath, shower tray, and basin.
Days 16 to 17: Decoration and Snagging
Any non-tiled walls and the ceiling are painted (use a bathroom-grade paint that resists moisture). Door furniture, mirrors, and accessories are fitted. The builder or project manager does a walkthrough to catch anything that needs tidying up -- a grout line that is not quite right, a fitting that is not level, a paint touch-up.
Day 18: Final Clean and Handover
A proper deep clean, removal of any remaining dust, and you get your bathroom back.
What Causes Delays
- Tiles arriving late or short. Order 10 percent more than you need. If you are using a specific batch, you cannot just pop out and buy more -- it may be a different shade.
- Hidden plumbing issues. Victorian properties often have a mix of copper, lead, and plastic pipes accumulated over decades. Sometimes the supply pressure is too low for the shower you have chosen, and a pump or different valve is needed.
- Drying times. Waterproofing, adhesive, and grout all need to cure. Rushing these stages leads to failures. Your tiler is not being lazy when they leave for a day between coats of tanking -- they are doing it right.
- Decisions not made in advance. Every time someone has to stop and wait for you to choose a tap or confirm a tile layout, the programme slips. Make all your selections before the strip-out starts.
Living Through It
If this is your only bathroom, plan ahead. A few practical suggestions:
- Ask your builder to reconnect the toilet at the end of each working day during the first week, even temporarily. It makes a significant difference to daily life.
- A gym membership with showers is worth it for two to three weeks. Several gyms near Clapham Common and on Northcote Road offer short-term passes.
- Dust travels. Seal the bathroom door with plastic sheeting and close internal doors on the same floor.
A bathroom renovation is disruptive, but it is finite. Know the timeline, prepare for it, and you will come through it with a room you actually enjoy using.