In Hayes (UB3) the split is 34% flats to 66% houses over 14,482 households, and the stock is inter-war.
The mixed-tenure mix here (45% owned, 33% privately rented) means a UB3 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Hayes substrates run to solid London stock brick in UB3, some of it dry-lined during a later refurbishment, with 22% social-rented stock locally, block access is agreed with the estate office first. Nothing is drilled until the wall has been sounded, because Hayes gives us fixings landing in soft lime mortar joints instead of the brick body, where 45% owner-occupation means the same home is booked again rather than a new tenant each year is the mistake that costs a UB3 customer twice.
Hayes is outside the Congestion Charge zone but inside ULEZ; our vehicles are compliant, so nothing is added for it. What shapes the job more is the neighbourhood itself — the old EMI works, the canal and a town centre transformed by the Elizabeth line — which is why a UB3 quote is not a Hillingdon average.
On access, new blocks need booked lifts and bays; older streets have driveways and canal bridges — one reason four operatives with a 7.5t tail-lift vehicle on a standard unit, scaling to six with a second vehicle where the handover date is tight. Fitters travelling in use Hayes & Harlington (Elizabeth line).