In Barnsbury (N1) the split is 81% flats to 19% houses over 7,513 households, and the stock is Georgian and early Victorian.
Because 30% of Barnsbury is privately rented and 43% socially rented, a lot of N1 work is agreed with a landlord or managing agent rather than the person opening the door.
Barnsbury substrates run to often with surface conduit — and precast concrete panels and dense blockwork, with 43% social-rented stock locally, block access is agreed with the estate office first. Nothing is drilled until the wall has been sounded, because drilling blind into a panel with reinforcement or a buried cable behind it, as the Barnsbury stock goes, where 27% owner-occupation means the same home is booked again rather than a new tenant each year is the mistake that costs a N1 customer twice.
Barnsbury 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 — conservation-area squares and crescents west of Upper Street — which is why a N1 quote is not a Islington average.
On access, low-traffic neighbourhood filters, narrow squares and heavy basement-step access — one reason one cleaner for a flat; two for a house, so the property is finished in one visit rather than split across a day. Fitters travelling in use Caledonian Road & Barnsbury (Overground).