William Street is almost entirely flats. Homes here typically change hands around £2,200,000 — roughly 15% below the SW1X norm. On floor area that works out near £7,703 per square metre, below the district's £20,421. Too few recent sales to read a street-level trend, but across SW1X prices have been rising over the last few years. With 6 sales across 5 homes since 2002, homes here come to market only rarely.
Get the full £5 report on the exact home — valuation vs its own sale history, EPC & running costs, flood/mining risk, planning, schools and more.
William Street prices over time
Median sold price on the street by year, from 6 HM Land Registry records. Years with no recorded sales are left blank rather than joined up.
Median sold price by year vs the SW1X district trend. Street medians on thin years reflect few sales — hover a dot for the exact figure.
How William Street compares
William Street against the SW1X district's busiest streets, the district itself, and the official UK House Price Index for the wider area.
Median sold price and sale count over the last 8years for the district's busiest streets. *This street's figures cover all recorded sales (fewer than 3 in the last 8 years).
William Street's £2,200,000 median sits about 15% below SW1X's £2,592,500; on floor space it runs £7,703/m² against the district's £20,421/m² (-62%).
Street and SW1X figures are medians of HM Land Registry sales; the England figures are the UK House Price Index mix-adjusted average — a different basis, so compare direction rather than levels between the two.
Every recorded sale on William Street
Individual transactions as recorded by HM Land Registry, newest first.
Get the full £5 report on the exact home — valuation vs its own sale history, EPC & running costs, flood/mining risk, planning, schools and more.
More streets in SW1X
Sold-price profiles for nearby streets, and the wider SW1X area guide.
Contains HM Land Registry data © Crown copyright and database right 2026, including the UK House Price Index. EPC data © Crown copyright. Licensed under the Open Government Licence v3.0. Figures summarise recorded sales on the street and are not a valuation of any individual home.