Census 2021 puts Hampstead at 11,433 households with a median age of 35.4. The Georgian and early Victorian stock is renter-heavy, which is why 17% houses and 84% flats need different handling in NW3.
45% of households rent privately and 39% own, which is why pathway jet washing demand here peaks around tenancy changeovers and completion dates.
Walls are lath and plaster over timber studs in Hampstead, with solid brick on the party and external walls — measured on the walk in from Hampstead (Northern) rather than assumed from a map, so the fixing that matters in Hampstead is chosen on site — the usual failure here is which crumbles the key and drops the panel — and a plasterboard plug spun into lime plaster — the reality on the streets around Hampstead Heath and Kenwood House.
Two streets can behave very differently in Hampstead: georgian hill village of narrow lanes, artists' houses and the Heath on its doorstep. The quote reflects the street the job is actually on. Hampstead sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate.
Steep, narrow lanes where a 3.5t Luton is the practical maximum; several streets need a shuttle from Whitestone Pond. Nearest station is Hampstead (Northern), and one technician for a private path; two where a communal walkway has to stay open to residents while the work is done, so one can manage access while the other washes.