The TW10 stock around Ham House and the Richmond Hill view is Georgian and early Victorian. ONS records 35% flats, 65% houses and 2,156 households in Richmond Hill and Ham.
Private renting sits at 15% and owner-occupation at 58%; the first group books mattress cleaning at short notice, the second plans it.
Expect some of it dry-lined during a later refurbishment — and solid London stock brick — where 58% owner-occupation means the same home is booked again rather than a new tenant each year behind the plaster in TW10. That is why fixings are picked in the room rather than off a van shelf, and why fixings landing in soft lime mortar joints instead of the brick body on these streets — measured on the walk in from Richmond (District, Overground, South Western) rather than assumed from a map is the fault we are called back to undo.
Two streets can behave very differently in Richmond Hill and Ham: the protected view from the hill, Ham House and the riverside meadows below. The quote reflects the street the job is actually on. Richmond Hill and Ham is outside the Congestion Charge zone but inside ULEZ; our vehicles are compliant, so nothing is added for it.
Getting to the door matters as much as the job: extremely steep hill, narrow riverside lanes at Ham and conservation-area limits. Richmond (District, Overground, South Western) 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.