William Street is a street almost entirely of flats. The median sale price is £280,000, about 44% below the typical SL4 sale. Per square metre of floor space it comes to about £4,136, below the district's £5,478. Too few recent sales to read a street-level trend, but across SL4 prices have been rising over the last few years. With 20 sales across 17 homes since 2003, homes here come to market only rarely.
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William Street prices over time
Median sold price on the street by year, from 20 HM Land Registry records. Years with no recorded sales are left blank rather than joined up.
Median sold price by year vs the SL4 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 SL4 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 £280,000 median sits about 44% below SL4's £500,000; on floor space it runs £4,136/m² against the district's £5,478/m² (-24%).
Street and SL4 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.
Sales marked non-standardare Land Registry “additional price paid” entries — bulk purchases, repossessions, right-to-buy and similar transfers. They're listed for completeness but excluded from every median and comparison figure on this page.
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 SL4
Sold-price profiles for nearby streets, and the wider SL4 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.