In Islington (N1) the split is 81% flats to 19% houses over 8,725 households, and the stock is Georgian and early Victorian.
The social-housing-led mix here (27% owned, 27% privately rented) means a N1 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Expect precast concrete panels and dense blockwork; locally that also means often with surface conduit, with 47% social-rented stock locally, block access is agreed with the estate office first behind the plaster in N1. That is why fixings are picked in the room rather than off a van shelf, and why drilling blind into a panel with reinforcement or a buried cable behind it, as the Islington stock goes, the reality on the streets around Islington Green and the Almeida Theatre is the fault we are called back to undo.
Islington 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 — barnsbury and Canonbury squares, antique shops and the Almeida — which is why a N1 quote is not a Islington average.
On access, narrow squares with resident bays, listed frontages and basement flats down external steps — one reason two operatives with a transit-sized van as standard, upsized to a Luton for a double garage or a lock-up with heavy workshop contents. Fitters travelling in use Highbury & Islington (Victoria, Overground).