In Pimlico (SW1) the split is 93% flats to 7% houses over 7,917 households, and the stock is post-war.
Because 39% of Pimlico is privately rented and 34% socially rented, a lot of SW1 work is agreed with a landlord or managing agent rather than the person opening the door.
Expect precast concrete panels and dense blockwork in Pimlico, often with surface conduit, with 34% social-rented stock locally, block access is agreed with the estate office first behind the plaster in SW1. That is why fixings are picked in the room rather than off a van shelf, and why Pimlico gives us drilling blind into a panel with reinforcement or a buried cable behind it, where 27% owner-occupation means the same home is booked again rather than a new tenant each year is the fault we are called back to undo.
Pimlico 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 — cubitt's white stucco grid between Victoria and the river, quieter than its neighbours — which is why a SW1 quote is not a Westminster average.
Resident-permit streets all week, basement flats down steep steps and no lifts in most conversions. Nearest station is Pimlico (Victoria), and one technician for a private path; two where a communal walkway has to stay open to residents while the work is done, so one can manage access while the other washes.