Census 2021 puts Harlesden at 5,538 households with a median age of 35.8. The mainly Victorian stock is renter-heavy, which is why 22% houses and 78% flats need different handling in NW10.
Owner-occupation runs at 24% in Harlesden, so alongside the 41% rental churn there is steady planned work — refurbishments, downsizes and probate clearances booked weeks ahead.
Expect often with surface conduit, over precast concrete panels and dense blockwork — which is what a 78% flat share across the ONS neighbourhood covering Harlesden actually produces behind the plaster in NW10. 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 on these streets — with 35% social-rented stock locally, block access is agreed with the estate office first is the fault we are called back to undo.
Anyone who knows Harlesden knows the pattern near The Jubilee Clock: jubilee Clock, Caribbean food shops and a working high street. We plan the NW10 visit around it. Harlesden is outside the Congestion Charge zone but inside ULEZ; our vehicles are compliant, so nothing is added for it.
On access, very busy high street with short loading bays; side streets are narrow and permit-only — one reason one fitter for a room or a straight flight; two for large open-plan floors, winder staircases and anything carried up above the third floor without a lift. Fitters travelling in use Harlesden (Bakerloo, Overground).