SO15 · Southampton · Grosvenor Square
Osborne House
Flats on Grosvenor Square, SO15. Sold prices since January 2023.
9 flats sold in Osborne House since January 2023: 2 in 2023, 3 in 2024, 3 in 2025, 1 in 2026.
Price per m² against SO15
Flats in Osborne House sell for about 2% more per square metre than the typical SO15 flat.
Buying a flat here? See how long is left on the leases in Osborne House, free on Lease Length Check.
Price per m² by year
Typical price per square metre of the flats sold each year.
Prices by flat size
| Size | Sold | Typical price |
|---|---|---|
| Under 50 m² | 1 | £200,000 |
| 70 to 99 m² | 6 | £279,000 |
| 100 m² and over | 2 | £288,000 |
Every sale in Osborne House
9 sales since January 2023, most recent first. Open a flat for its full sale history.
| Flat | Date | Price |
|---|---|---|
| Flat 10 | 21 Jan 2026 | £270,000 |
| Flat 23 | 19 Dec 2025 | £283,000 |
| Flat 28 | 17 Oct 2025 | £250,000 |
| Flat 41 | 8 Jul 2025 | £200,000 |
| Flat 16 | 11 Oct 2024 | £325,000 |
| Flat 19 | 28 Jun 2024 | £285,000 |
| Flat 13 | 30 Apr 2024 | £275,000 |
| Flat 7 | 26 May 2023 | £292,500 |
| Flat 35 | 3 Mar 2023 | £250,000 |
The SO15 report each month.
Everything here is free to see. The monthly SO15 report needs a free account: every sale with street, date and price, emailed as soon as it is published. No password, no card.
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Watch Grosvenor Square
Free with an account. An email when a home on Grosvenor Square sells, Osborne House included, at most one a month.