In Balham (SW12) the split is 65% flats to 35% houses over 3,809 households, and the stock is mainly Victorian.
Because 41% of Balham is privately rented and 12% socially rented, a lot of SW12 work is agreed with a landlord or managing agent rather than the person opening the door.
Walls are with solid brick on the party and external walls, over lath and plaster over timber studs, and very tight cpz, narrow streets and art deco blocks with small original lifts, so the fixing that matters in Balham is chosen on site — the usual failure here is a plasterboard plug spun into lime plaster; locally that also means which crumbles the key and drops the panel, which is what a 65% flat share across the ONS neighbourhood covering Balham actually produces.
Balham sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate. What shapes the job more is the neighbourhood itself — bedford Hill's bars, Hildreth Street market and family terraces between the commons — which is why a SW12 quote is not a Lambeth average.
On access, very tight CPZ, narrow streets and Art Deco blocks with small original lifts — one reason one driver as standard on all three van sizes, with a second loader added by the hour where stairs, a lift booking or heavy furniture make a solo load impractical. Fitters travelling in use Balham (Northern, Southern).