St. James's - SW1Y
The average house price in St. James's (SW1Y) was £1,422,800 in 2025, up 447% from £260,023 in 1995. Prices peaked at £4,053,272 in 2017.
Over the last ten years, average prices have fallen 4% (from £1,479,816 in 2015). The median sale price in 2025 was £899,000 across 5 sales. 523 transactions have been recorded in SW1Y since 1995.
So far in 2026, 3 sales have been recorded at an average price of £1,085,001 (year to date).
2025 prices at a glance
| Property type | Average price | Median price | Sales |
|---|---|---|---|
| All types | £1,422,800 | £899,000 | 5 |
| Detached | — | — | — |
| Semi-detached | — | — | — |
| Terraced | — | — | — |
| Flats/maisonettes | £1,422,800 | £899,000 | 5 |
Price
Type
Average Price by Year
Median Price by Year
Transaction Volume by Year
Data source: UK Land Registry Price Paid Data. Inflation data: ONS CPI series D7BT. Real prices expressed in 2026 pounds.