Census 2021 puts Chalk Farm at 3,654 households with a median age of 34.1. The mainly Victorian stock is social-housing-led, which is why 12% houses and 88% flats need different handling in NW3.
Owner-occupation runs at 25% in Chalk Farm, so alongside the 28% rental churn there is steady planned work — refurbishments, downsizes and probate clearances booked weeks ahead.
Chalk Farm substrates run to precast concrete panels and dense blockwork in Chalk Farm, often with surface conduit — a median age of 34 in this neighbourhood shapes what gets ordered here. Nothing is drilled until the wall has been sounded, because in NW3, drilling blind into a panel with reinforcement or a buried cable behind it — with 47% social-rented stock locally, block access is agreed with the estate office first is the mistake that costs a NW3 customer twice.
Two streets can behave very differently in Chalk Farm: roundhouse gigs, market overspill and terraces climbing towards Belsize. The quote reflects the street the job is actually on. Chalk Farm sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate.
Getting to the door matters as much as the job: market weekend congestion, narrow one-way streets and no off-street parking. Chalk Farm (Northern) is the nearest station, and one technician with a van-mounted dip tank; two where a barbecue has to be carried through a flat to reach a terrace.