£475,000

Added on 13/02/2026
It is hard to imagine a home as regal and unique as the Mansion House. Originally designed by Horace Field, its untold heritage and prestige are evident throughout. Meticulously renovated, this historic property will make a truly exceptional family home. The house is over 15m wide and has an array of illustrious period features such as the sweeping central staircase, the spacious oak-panelled drawing room, and the ornate gilt cupola.
£1,760 per sq ft — above 9 in 10 recent sales in SW1P (£786–£1,426, 10th–90th percentile, 244 sales over 24 months).
Lowest and highest are the 10th and 90th percentiles of 244 homes sold in SW1P over the last 24 months. This home's figure uses its asking price. All sold £/sq ft in SW1P →
Cowley Street, Westminster, London, SW1P, SW1P 3NB
HM Land Registry sales on Cowley Street — none recorded yet for SW1P 3NB. Floor areas from Energy Performance Certificates where matched.
| Address | Type | Sold | Size | Size | £/sq ft | Price |
|---|---|---|---|---|---|---|
| 17, Cowley Street SW1P 3LZ Terraced | Terraced | Mar 2025 | 2,067 sq ft £1,694/sq ft | 2,067 sq ft | £1,694 | £3,500,000 |
| 19, Cowley Street SW1P 3LZ Terraced | Terraced | Oct 2023 | 5,899 sq ft £2,034/sq ft | 5,899 sq ft | £2,034 | £12,000,000 |
| 7, Cowley Street SW1P 3NB Terraced | Terraced | Jan 2018 | — | — | — | £5,625,000 |
| 14, Cowley Street SW1P 3LZ Terraced | Terraced | Dec 2015 | 2,185 sq ft £1,602/sq ft | 2,185 sq ft | £1,602 | £3,500,000 |
| 12, Cowley Street SW1P 3LZ Terraced | Terraced | Sept 2012 | 2,110 sq ft £1,303/sq ft | 2,110 sq ft | £1,303 | £2,750,000 |
| 18, Cowley Street SW1P 3LZ Terraced | Terraced | Nov 2010 | — | — | — | £1,300,000 |
| 15, Cowley Street SW1P 3LZ Terraced | Terraced | Aug 1999 | 1,819 sq ft £478/sq ft | 1,819 sq ft | £478 | £870,000 |
The neighbourhood around this property.
