In South Kensington (SW7) the split is 86% flats to 14% houses over 2,840 households, and the stock is period conversion.
Because 54% of South Kensington is privately rented and 8% socially rented, a lot of SW7 work is agreed with a landlord or managing agent rather than the person opening the door.
Walls are with solid brick on the party and external walls — and lath and plaster over timber studs, the pattern behind 2,840 households inside the SW7 neighbourhood, so the fixing that matters in South Kensington is chosen on site — the usual failure here is a plasterboard plug spun into lime plaster; locally that also means which crumbles the key and drops the panel, and with 54% of homes here privately rented, it sets the booking date as often as the job does.
South Kensington 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 — museum quarter, French lycée and cream-stucco crescents — which is why a SW7 quote is not a Kensington and Chelsea average.
Museum-visitor traffic, single-lane service roads and lift-free upper floors in older conversions. Nearest station is South Kensington (Circle, District, Piccadilly), and one technician with a portable extraction machine and air mover on a single household booking; two technicians on HMO, student accommodation and serviced-apartment rounds where six or more mattresses are cleaned in a day.