In Barnsbury (N1) the split is 81% flats to 19% houses over 7,513 households, and the stock is Georgian and early Victorian.
With 30% private renting against 27% owner-occupied, most N1 bookings land on a move-in day rather than a weekend.
Walls are precast concrete panels and dense blockwork in Barnsbury, often with surface conduit, the reality on the streets around Thornhill Square, so the fixing that matters in Barnsbury is chosen on site — the usual failure here is drilling blind into a panel with reinforcement or a buried cable behind it, as the Barnsbury stock goes, and with 30% of homes here privately rented, it sets the booking date as often as the job does.
Barnsbury 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 — conservation-area squares and crescents west of Upper Street — which is why a N1 quote is not a Islington average.
Getting to the door matters as much as the job: low-traffic neighbourhood filters, narrow squares and heavy basement-step access. Caledonian Road & Barnsbury (Overground) is the nearest station, and two cleaners for a flat, two to three for a house, working together in one visit rather than spreading the job across days.