In Mottingham (SE9) the split is 25% flats to 75% houses over 3,789 households, and the stock is inter-war.
The social-housing-led mix here (50% owned, 17% privately rented) means a SE9 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Mottingham substrates run to often with surface conduit, over precast concrete panels and dense blockwork, the pattern behind 3,789 households inside the SE9 neighbourhood. Nothing is drilled until the wall has been sounded, because drilling blind into a panel with reinforcement or a buried cable behind it, as the Mottingham stock goes, where 50% owner-occupation means the same home is booked again rather than a new tenant each year is the mistake that costs a SE9 customer twice.
Mottingham 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 — a quiet interwar suburb between Eltham and Chislehurst — which is why a SE9 quote is not a Bromley average.
Getting to the door matters as much as the job: wide roads and driveways throughout, with easy turning for a Luton. Mottingham (Southeastern) is the nearest station, and one technician with a portable extraction machine and air mover on a single household booking; two technicians on HMO, student accommodation and serviced-apartment rounds where six or more mattresses are cleaned in a day.