Census 2021 puts Belsize Park at 3,000 households with a median age of 37.8. The mainly Victorian stock is renter-heavy, which is why 7% houses and 93% flats need different handling in NW3.
Private renting sits at 51% and owner-occupation at 39%; the first group books commercial cleaning at short notice, the second plans it.
Belsize Park substrates run to lath and plaster over timber studs in NW3, with solid brick on the party and external walls — a median age of 38 in this neighbourhood shapes what gets ordered here. Nothing is drilled until the wall has been sounded, because which crumbles the key and drops the panel — and a plasterboard plug spun into lime plaster — and with 45% one-person households in Belsize Park, one adult is usually the only pair of hands on site is the mistake that costs a NW3 customer twice.
Two streets can behave very differently in Belsize Park: stucco villas and mansion blocks on the slope between Hampstead and Chalk Farm. The quote reflects the street the job is actually on. Belsize Park sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate.
Getting to the door matters as much as the job: resident-permit streets, hill gradients and conversion flats up three or four flights. Belsize Park (Northern) is the nearest station, and one to four operatives depending on floor area, with a named supervisor and a mobile cover team for sickness.
