In Nunhead (SE15) the split is 58% flats to 42% houses over 7,127 households, and the stock is mainly Victorian.
Because 20% of Nunhead is privately rented and 39% socially rented, a lot of SE15 work is agreed with a landlord or managing agent rather than the person opening the door.
Expect precast concrete panels and dense blockwork in Nunhead, often with surface conduit, which is why London Borough of Southwark kerb rules get settled before the van is loaded behind the plaster in SE15. 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, as the Nunhead stock goes, and with 20% of homes here privately rented, it sets the booking date as often as the job does is the fault we are called back to undo.
Nunhead sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate. What shapes the job more is the neighbourhood itself — cemetery, hill views and a quiet village green between Peckham and Brockley — which is why a SE15 quote is not a Southwark average.
Getting to the door matters as much as the job: steep hill streets, narrow railway bridges and permit bays near the station. Nunhead (Southeastern) is the nearest station, and one cleaner for a flat; two for a house, so the property is finished in one visit rather than split across a day.