SW15 postcode district — Mortlake & Barnes Common, Wandsworth, Richmond Upon Thames and Kingston Upon Thames

The SW15 postcode district in London sits across Mortlake & Barnes Common, spanning the local authority areas of Wandsworth, Richmond Upon Thames and Kingston Upon Thames. It groups thousands of unit postcodes used for addressing and is a practical geography for comparing mortlake & barnes common property market activity with neighbouring districts. In the 12 months to 31 March 2026, recorded paid sales show an average sold price around £759,501 across 389 transactions in the district. On a year-on-year basis, the average moved about down 4.1% compared with the previous 12 months. The busiest segment was flat / maisonette, with 265 sales in that period—useful context when you compare house prices in SW15 across terraces, flats and houses. Wandsworth, Richmond Upon Thames and Kingston Upon Thames sold prices in the official Price Paid extract reflect completions (not asking prices), so they’re a solid base for research, desk-based due diligence and area IQ-style comparisons. We surface the latest-sale pattern per postcode where a standard paid sale exists in-window.