The kitchen and the bathroom are the two rooms that make a flat habitable, and they are the two rooms that share everything: the water, the waste, the hot water, the electrical capacity and the trades. Doing them at the same time is usually the right call. Doing them without a plan for the order is how a six-week programme becomes something else entirely.
This page is about the sequencing decision, not the design of either room. It assumes you have already worked out what you want and are now facing the practical question of how to get both built without living in a building site or paying for the same trade to come back four times.
Why together beats separately
The instinct is to do one, live with it, then do the other. In a Central London flat that is usually the expensive route, for reasons that are worth stating plainly.
The trades overlap almost completely. The same plumber does the first fix in both rooms. The same electrician runs the circuits. The same tiler tiles both. Doing them separately means mobilising each trade twice, protecting the flat twice, and paying for two lots of set-up, access and waste removal — which in a mansion block with no parking and a booked lift is not a trivial line.
The services are shared. If the flat needs a rewire or a re-pipe, that is one job that happens to pass through two rooms. Splitting it means doing half a rewire, making good, and then opening the same walls again later. Consumer unit work, the incoming supply, the hot water and the heating are flat-wide questions, not room-specific ones.
The disruption is the same either way. You still get dust, noise, restricted hours and strangers in the flat. Taking it once is better than taking it twice.
And the consent is one application. If your lease requires a licence to alter — which most leases do for moving waste, touching structure or changing floor finishes — one application covering both rooms is one process, not two. Our licence to alter guide covers this.
Which room goes first, and why it is usually the bathroom
If you are staying in the flat, this decision is about which loss you can survive.
You can live without a kitchen. It is unpleasant, but a microwave, a kettle and a sink somewhere else will get a household through several weeks. You cannot meaningfully live without a bathroom, and if the flat has only one, the bathroom's downtime is the hard constraint around which everything else has to bend.
So the usual answer in a single-bathroom flat is: do the bathroom first, get it back into service, then take the kitchen out. That way you only lose the bathroom for its own duration rather than for the whole programme, and the kitchen — the longer, less critical loss — happens while you still have somewhere to wash.
If the flat has two bathrooms, the logic reverses and you have real freedom. Do the second bathroom first, keep the main one, then run the kitchen and the main bathroom in parallel. That is the fastest route and it is only available to people with a spare.
If the flat is empty — a purchase before moving in, or a landlord between tenancies — none of this applies and the answer is simply: do everything at once, in the most efficient trade order. That is a materially faster and cheaper programme, and it is a real argument for doing the work before you move in. See refurbishing between tenants for the landlord version.
The trade order that actually holds
Whatever the room order, the trade order within the programme is fixed by dependency, not by preference.
- Protection and set-up. Common parts, lift, the route in. Once, for both rooms.
- Strip-out, both rooms. Do them together if you can. The walls are open, and this is when you learn what the flat is really made of — lead pipe, tired wiring, damp timber, an unrecorded alteration. Better to find both rooms' surprises at the same time than to be ambushed twice.
- Structural and drainage work. Anything that moves waste or touches a wall. This must precede everything.
- First fix, flat-wide. All pipework and cabling for both rooms in one pass. This is the efficiency the whole strategy is built on.
- Substrate, levelling, screed. Both rooms. Drying time enters here and it does not negotiate.
- Tanking. Bathroom, and it has to cure before tiling. See tanking.
- Tiling. Both rooms, same trade, back to back.
- Second fix. Bathroom first if you need it back. Kitchen units, then worktop template, then worktop — and the worktop template cannot happen until the units are in and level, which is a lead time sitting in the middle of your programme that people constantly forget.
- Appliances, commissioning, certification.
- Decoration and snagging.
The worktop is the classic programme trap. A stone worktop is templated off the installed units and then fabricated, and that gap is real. Plan for it or the kitchen sits finished-but-unusable while everyone waits.
Where these programmes actually fail
- Turning the water off. Both rooms share the supply. In a mansion block the isolation may be in a communal riser and may need the managing agent, and turning off the water may affect neighbours. Establish where the stopcock is and whether it turns before you plan a single date. A seized stopcock discovered on day one is a bad day.
- Hot water and heating. If the same boiler or cylinder serves both, work on it takes both rooms out at once. If it is being replaced, that is a flat-wide event to slot in deliberately, not something to discover.
- Electrical capacity. A kitchen full of modern appliances plus a bathroom with underfloor heating and lighting is a load question. Electrical work falls under Part P and is to BS 7671; if the consumer unit needs work, that is flat-wide and it stops both rooms while it happens. See electrical.
- Client changes. A change in one room propagates through a shared first fix. This is the commonest cause of drift and it is entirely within your control.
- Lead times colliding. Stone, brassware, appliances and worktops all have their own clocks. One late item can hold a room that is otherwise finished.
- Access windows. Restricted hours shorten the day for both rooms simultaneously. See how long a bathroom takes.
Living through it, if you must
If you are staying, plan the survival kit rather than improvising it. A temporary kitchen somewhere else in the flat — kettle, microwave, fridge, and access to a sink — is worth setting up properly on day one. Seal the rooms you are not working in, because dust travels further than anyone believes. Agree the working hours in writing so nobody is surprised. Decide in advance who has keys and who lets people in, because a trade standing outside a locked door is a day of everyone's money.
Be honest with yourself about the bathroom gap. If the flat has one bathroom and you have children, a week of no bathroom is not a minor inconvenience, and it may be cheaper to leave for that stretch than to slow the job down working around it.
Two rooms, one set of decisions to lock down
Because the first fix serves both rooms, the point of no return arrives earlier than people expect — and it arrives for both rooms at once. Everything below has to be settled before the walls close, not when the tiler is standing in the room.
- Every position. Basin, WC, shower valve, sink, tap, dishwasher, washing machine, fridge with a water feed. Each of those is a pipe that is about to be buried.
- Every socket, switch and light. Including the ones behind appliances, the ones inside cupboards, and the extract fan. Adding a socket after the tiling is a demolition job.
- Appliances, actually chosen. Not the category — the model. Integrated appliances dictate cabinet sizes, and a change of mind late means a change of unit, which means a change of worktop.
- Heating. Where the towel rail goes, whether the floor is heated, whether the kitchen radiator survives the new layout.
- Floor build-up. Both rooms, because it decides thresholds and door clearances across the whole flat.
The rule of thumb is simple and unpopular: a change before first fix costs a conversation, a change after first fix costs money, and a change after tiling costs the room. If you are not sure about something, resolve it while the walls are open — that is the cheap window, and it closes.
The consent and building layer
Most leases require freeholder or managing agent consent for alterations — commonly a formal licence to alter — and the usual triggers are moving soil or waste, structural work, and changing floor finishes. A combined kitchen and bathroom scheme touches most of those. Many Central London freeholds sit with large estates whose requirements vary considerably, so check your lease and speak to your managing agent early; see our consent guide. In listed stock, internal works affecting special character generally need listed building consent, and that is a longer road. Both rooms engage the regulations: Part F, Part G and Part P for the bathroom, and Part P for the kitchen — see our regulations guide.
How we run it
One contractor, one programme, one point of contact, and the trades sequenced by us rather than by you. That is the whole argument for doing both rooms together — the coordination is the value, and it disappears the moment you are managing three firms who each blame the other two. Bathroom refurbishment starts from £2,800, tiling from £55/m², wood flooring from £30/m², plumbing and electrical from £80, and a combined refurbishment is per quotation with the price fixed against a defined scope before work starts. Send photographs of both rooms and tell us whether you are staying in the flat — that answer changes the plan more than anything else you can tell us.