The SW1 stock around Eaton Square is post-war. ONS records 92% flats, 8% houses and 3,844 households in Belgravia.
Owner-occupation runs at 22% in Belgravia, so alongside the 30% rental churn there is steady planned work — refurbishments, downsizes and probate clearances booked weeks ahead.
Belgravia substrates run to often with surface conduit, over precast concrete panels and dense blockwork — a median age of 38 in this neighbourhood shapes what gets ordered here. Nothing is drilled until the wall has been sounded, because in SW1, drilling blind into a panel with reinforcement or a buried cable behind it — and with 49% one-person households in Belgravia, one adult is usually the only pair of hands on site is the mistake that costs a SW1 customer twice.
Two streets can behave very differently in Belgravia: grosvenor estate stucco, embassies and cobbled mews behind Eaton Square. The quote reflects the street the job is actually on. Belgravia sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate.
On access, estate parking rules, mews arches with height limits and listed staircases requiring protection — one reason 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. Fitters travelling in use Sloane Square (Circle, District).