Almost every refurbishment conversation in a Central London flat eventually reaches the same fork: do it room by room over a year or two, living around the mess, or clear out and do the whole thing in one go. Both are legitimate strategies. Neither is automatically cheaper, faster or less disruptive than the other — it depends on the building, the budget, and what state the services are in behind the walls. This is the decision worth making deliberately, before a kitchen quote or a bathroom quote pulls you into a scope you haven't actually chosen.
Why the decision is harder here than elsewhere
In a freehold house, phasing a refurbishment is mostly a budgeting question. In a Central London mansion block or period conversion, it's also a permissions question. Internal work that touches a shared wall, alters drainage runs, or changes the layout may need freeholder consent or a formal licence to alter before a single wall comes down. If the building sits in a conservation area, or is listed, there are further checks — our guides to conservation area rules and listed building consent cover what typically needs sign-off and what doesn't. Doing a whole property at once means gathering all of that consent up front. Doing it in phases means you may need to go back for consent more than once, for smaller and smaller pieces of work.
The case for phasing it room by room
Phasing has an obvious appeal: you spread the cost over time, you can usually stay living in the flat between phases, and you don't need to find alternative accommodation while the whole property is stripped back. It also lets you learn from the first room — a bathroom refurbishment tells you a lot about how a contractor works before you commit them to the kitchen.
The trade-off is efficiency. Every phase means a new mobilisation: skips booked again, dust protection put up again, a plumber or electrician returning to a flat they last worked in eight months ago. If the wiring or plumbing genuinely needs replacing throughout the property, doing it one room at a time usually costs more overall than doing it once, because first fix and second fix get repeated rather than run continuously. Finishes can also drift — tile colours, floor tones and paint shades chosen a year apart rarely match as well as you expect at the time.
The case for one continuous project
A single refurbishment concentrates the pain into one period and gets it over with. It's usually the more sensible route when the core services — wiring, plumbing, waste runs — are old enough that opening up one room inevitably means exposing problems in the next. It also means engaging a decorator, a floor layer and a tiler once, in a coordinated sequence, rather than negotiating access three separate times.
The cost of that efficiency is disruption. A full strip-out usually means decanting, and it means front-loading a set of approvals rather than staggering them: freeholder consent, any planning or listed-building sign-off, and — in a mansion block — porter and lift access arrangements for skips, materials and multiple trades over several weeks. If you're in Westminster or a neighbouring borough, you'll also want to check working hours restrictions and sort out parking permits for trade vehicles before the first van arrives, since a full refurbishment brings far more vehicle movements than a single-room job. Where structural work touches a party wall — a shared wall with the flat next door, or the floor between you and the flat below — a party wall agreement may be needed before work starts, and that notice period can set your start date more than your contractor's diary does.
A practical way to decide
A few questions tend to settle it faster than a spreadsheet:
- Do you need to keep living in the flat? If decanting isn't possible or affordable, phasing is often the only realistic option, whatever the efficiency argument says.
- How old are the services? If the wiring or plumbing is original or long overdue for renewal, opening walls once and doing it properly tends to save money that phased re-openings would otherwise lose.
- What's your consent position? If you already know structural work is coming — a new bathroom layout, a kitchen wall moved — it's often worth securing freeholder or planning consent for the full scope in one application, even if the work itself happens in stages.
- How long are you keeping the flat? A short hold favours cosmetic, phased work; a longer hold makes the upfront disruption of a full refurbishment easier to justify against years of use afterwards.
The middle path most owners actually take
In practice, a lot of Central London refurbishments land between the two extremes: open everything up and renew the services in one pass, then finish the cosmetic layer — flooring, tiling, decoration — in phases as budget allows. This works because the disruptive, consent-heavy part (first fix wiring and plumbing, waterproofing, structural changes) only needs doing once, while the finishing choices — the order kitchen and bathroom work happens in, which floor goes where, which tile in which room — can be made and paid for on a longer timeline without repeating any of the expensive, disruptive groundwork.
Whichever route you choose, treat the end of every phase the same way: with a proper snagging walk-through rather than a verbal sign-off. Our snagging list guide sets out what to check before you release final payment on any stage, and it applies just as much to a single bathroom as it does to the last room of a whole-property job.
If you're weighing this up for a specific flat, our refurbishment cost guide and our wider notes on refurbishing a period property are worth reading alongside this one. For a scoped, fixed quote on either a single phase or the whole project, see our refurbishment service page or get in touch directly.