In Holborn (WC1) the split is 95% flats to 5% houses over 3,090 households, and the stock is post-war.
With 30% private renting against 18% owner-occupied, most WC1 bookings land on a move-in day rather than a weekend.
Expect often with surface conduit, over precast concrete panels and dense blockwork, and with 42% one-person households in Holborn, one adult is usually the only pair of hands on site behind the plaster in WC1. That is why fixings are picked in the room rather than off a van shelf, and why Holborn gives us drilling blind into a panel with reinforcement or a buried cable behind it, where 18% owner-occupation means the same home is booked again rather than a new tenant each year is the fault we are called back to undo.
Holborn sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate. What shapes the job more is the neighbourhood itself — legal London — the Inns of Court, Lincoln's Inn Fields and Sicilian Avenue — which is why a WC1 quote is not a Camden average.
On access, inns of Court gate access, weekday loading windows and listed staircases — one reason one cleaner for a flat; two for a house, so the property is finished in one visit rather than split across a day. Fitters travelling in use Holborn (Central, Piccadilly).