The SW1 stock around St James's Palace is mixed-era. ONS records 95% flats, 5% houses and 3,927 households in St James's.
44% of households rent privately and 28% own, which is why wardrobe assembly demand here peaks around tenancy changeovers and completion dates.
Walls are dot-and-dab plasterboard over blockwork in SW1, with metal stud partitions between rooms — the pattern behind 3,927 households inside the SW1 neighbourhood, so the fixing that matters in St James's 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 St James's: gentlemen's clubs, galleries and Jermyn Street shirtmakers between the palace and Piccadilly. The quote reflects the street the job is actually on. St James's 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, royal Parks restrictions, listed building rules and narrow service entrances off Duke Street — one reason one fitter for a single wardrobe; two for fitted bay systems, sliding-door units and anything carried up a shared stairwell. Fitters travelling in use Green Park (Piccadilly, Victoria, Jubilee).