Walk Westminster and Whitehall from The Palace of Westminster outwards and the period conversion pattern is obvious: 95% of the 3,927 households in SW1 live in flats, 5% in houses.
Private renting sits at 44% and owner-occupation at 28%; the first group books house and flat clearance at short notice, the second plans it.
Walls are dot-and-dab plasterboard over blockwork; locally that also means with metal stud partitions between rooms — a median age of 35 in this neighbourhood shapes what gets ordered here, so the fixing that matters in Westminster and Whitehall is chosen on site — the usual failure here is in SW1, short screws that grip only the board and slowly lever it off the dabs — which is why Westminster City Council kerb rules get settled before the van is loaded.
Two streets can behave very differently in Westminster and Whitehall: government quarter around Parliament Square, Whitehall and Smith Square. The quote reflects the street the job is actually on. Westminster and Whitehall 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, security cordons, camera-controlled streets and pre-notified vehicle access on many roads — one reason a two-person crew and a Luton for flats; three or four crew and two vans for houses with lofts, cellars or garages. Fitters travelling in use Westminster (Circle, District, Jubilee).