The SW4 stock around Clapham Common is Georgian and early Victorian. ONS records 76% flats, 24% houses and 21,167 households in Clapham.
34% of households rent privately and 37% own, which is why spring cleaning demand here peaks around tenancy changeovers and completion dates.
Expect lath and plaster over timber studs; locally that also means with solid brick on the party and external walls — which is what a 76% flat share across the ONS neighbourhood covering Clapham actually produces behind the plaster in SW4. That is why fixings are picked in the room rather than off a van shelf, and why which crumbles the key and drops the panel, over a plasterboard plug spun into lime plaster — which is why London Borough of Lambeth kerb rules get settled before the van is loaded is the fault we are called back to undo.
Two streets can behave very differently in Clapham: the Common, Abbeville Village and the Old Town's Georgian houses. The quote reflects the street the job is actually on. Clapham sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate.
Very tight CPZ hours, narrow terraces and share-house turnover every summer. Nearest station is Clapham Common (Northern), and two cleaners for a flat, two to three for a house, working together in one visit rather than spreading the job across days.