In Hampstead (NW3) the split is 84% flats to 17% houses over 11,433 households, and the stock is Georgian and early Victorian.
The renter-heavy mix here (39% owned, 45% privately rented) means a NW3 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Hampstead substrates run to lath and plaster over timber studs in NW3, with solid brick on the party and external walls, and with 37% one-person households in Hampstead, one adult is usually the only pair of hands on site. Nothing is drilled until the wall has been sounded, because a plasterboard plug spun into lime plaster; locally that also means which crumbles the key and drops the panel, a median age of 35 in this neighbourhood shapes what gets ordered here is the mistake that costs a NW3 customer twice.
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. What shapes the job more is the neighbourhood itself — georgian hill village of narrow lanes, artists' houses and the Heath on its doorstep — which is why a NW3 quote is not a Camden average.
On access, steep, narrow lanes where a 3.5t Luton is the practical maximum; several streets need a shuttle from Whitestone Pond — one reason three to six operatives depending on the plant, with skates, pallet trucks and a tail-lift 7.5t as standard and a HIAB where a machine cannot be moved to the bay by hand. Fitters travelling in use Hampstead (Northern).