In Brixton (SW9) the split is 80% flats to 20% houses over 16,254 households, and the stock is mainly Victorian.
The social-housing-led mix here (31% owned, 30% privately rented) means a SW9 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Brixton substrates run to precast concrete panels and dense blockwork; locally that also means often with surface conduit, and with 30% of homes here privately rented, it sets the booking date as often as the job does. 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 Brixton stock goes, the reality on the streets around Brixton Village and Electric Avenue is the mistake that costs a SW9 customer twice.
Market arcades, the Academy and one of the most culturally significant high streets in London. That character decides the practical detail of mattress cleaning here far more than the borough boundary does. Brixton 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 and nightlife congestion, red routes on the A23 and permit-only side streets. Brixton (Victoria, National Rail) 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.