In Wimbledon (SW19) the split is 47% flats to 53% houses over 23,023 households, and the stock is mainly Victorian.
The owner-occupier-led mix here (57% owned, 34% privately rented) means a SW19 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Wimbledon substrates run to with solid brick on the party and external walls — and lath and plaster over timber studs, which is why London Borough of Merton kerb rules get settled before the van is loaded. 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, a median age of 37 in this neighbourhood shapes what gets ordered here is the mistake that costs a SW19 customer twice.
Wimbledon is outside the Congestion Charge zone but inside ULEZ; our vehicles are compliant, so nothing is added for it. What shapes the job more is the neighbourhood itself — the town centre and theatre below, the Village and common above — which is why a SW19 quote is not a Merton average.
Getting to the door matters as much as the job: championship-fortnight restrictions, steep Wimbledon Hill Road and Village conservation limits. Wimbledon (District, Southern, South Western, Tramlink) 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.