In Harrow (HA1) the split is 38% flats to 62% houses over 14,108 households, and the stock is mainly Victorian.
The owner-occupier-led mix here (59% owned, 31% privately rented) means a HA1 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Walls are solid London stock brick; locally that also means some of it dry-lined during a later refurbishment, which is why London Borough of Harrow kerb rules get settled before the van is loaded, so the fixing that matters in Harrow is chosen on site — the usual failure here is fixings landing in soft lime mortar joints instead of the brick body, as the Harrow stock goes, where 59% owner-occupation means the same home is booked again rather than a new tenant each year.
Harrow 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 — town centre shopping, St Ann's mall and the school on the hill above — which is why a HA1 quote is not a Harrow average.
Getting to the door matters as much as the job: one-way town centre with timed loading; the hill lanes are narrow and steep. Harrow-on-the-Hill (Metropolitan, Chiltern) is the nearest station, and two operatives with a Luton van as standard, scaling to a second vehicle for a full three-bed or a property with no lift.