Census 2021 puts Chelsea at 8,944 households with a median age of 43.7. The Georgian and early Victorian stock is mixed-tenure, which is why 22% houses and 78% flats need different handling in SW3.
Owner-occupation runs at 38% in Chelsea, so alongside the 35% rental churn there is steady planned work — refurbishments, downsizes and probate clearances booked weeks ahead.
Chelsea substrates run to lath and plaster over timber studs; locally that also means with solid brick on the party and external walls — the pattern behind 8,944 households inside the SW3 neighbourhood. Nothing is drilled until the wall has been sounded, because a plasterboard plug spun into lime plaster in Chelsea, which crumbles the key and drops the panel — measured on the walk in from Sloane Square (Circle, District) rather than assumed from a map is the mistake that costs a SW3 customer twice.
Two streets can behave very differently in Chelsea: king's Road shops, Cadogan estate squares and the river at Chelsea Embankment. The quote reflects the street the job is actually on. Chelsea 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: cadogan estate parking rules, King's Road red-route loading and mews arches with height limits. Sloane Square (Circle, District) is the nearest station, 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.
