In Friern Barnet and New Southgate (N11) the split is 47% flats to 53% houses over 4,005 households, and the stock is mainly Victorian.
Because 30% of Friern Barnet and New Southgate is privately rented and 10% socially rented, a lot of N11 work is agreed with a landlord or managing agent rather than the person opening the door.
Friern Barnet and New Southgate substrates run to lath and plaster over timber studs in N11, with solid brick on the party and external walls, and with 25% one-person households in Friern Barnet and New Southgate, one adult is usually the only pair of hands on site. Nothing is drilled until the wall has been sounded, because a plasterboard plug spun into lime plaster in Friern Barnet and New Southgate, which crumbles the key and drops the panel, which is what a 47% flat share across the ONS neighbourhood covering Friern Barnet and New Southgate actually produces is the mistake that costs a N11 customer twice.
Friern Barnet and New Southgate 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 — quiet residential grid around the former Colney Hatch asylum, now Princess Park Manor — which is why a N11 quote is not a Barnet average.
Getting to the door matters as much as the job: gated estate access codes at Princess Park Manor; driveways elsewhere. New Southgate (Great Northern) is the nearest station, and two cleaners for a flat, two to three for a house, working together in one visit rather than spreading the job across days.