Walk Marylebone from The Wallace Collection outwards and the Georgian and early Victorian pattern is obvious: 88% of the 3,555 households in W1 live in flats, 12% in houses.
57% of households rent privately and 32% own, which is why shed assembly demand here peaks around tenancy changeovers and completion dates.
Marylebone substrates run to with metal stud partitions between rooms, over dot-and-dab plasterboard over blockwork — and estate-managed streets, single-yellow evening restrictions and mansion blocks with porters and small lifts. Nothing is drilled until the wall has been sounded, because in W1, short screws that grip only the board and slowly lever it off the dabs — the pattern behind 3,555 households inside the W1 neighbourhood is the mistake that costs a W1 customer twice.
Two streets can behave very differently in Marylebone: village high street, Georgian estate streets and the medical quarter along Harley Street. The quote reflects the street the job is actually on. Marylebone 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, estate-managed streets, single-yellow evening restrictions and mansion blocks with porters and small lifts — one reason one fitter for a small shed on a ready base; two for anything over 8x6ft or where roof panels need lifting together. Fitters travelling in use Marylebone (Bakerloo, Chiltern Railways).