W1U · City of Westminster · Chiltern Street
Portman Mansions
Flats on Chiltern Street, W1U. Sold prices since January 2023.
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typical sale
11 flats sold in Portman Mansions since January 2023: 4 in 2023, 6 in 2024, 1 in 2025.
per m², typical · £1,088 per sq ft
m²typical flat size
Aug 2025last sale, £995,000
Price per m² against W1U
Flats in Portman Mansions sell for about 27% less per square metre than the typical W1U flat.
Portman Mansions
£11,710
All W1U flats
£16,150
Buying a flat here? See how long is left on the leases in Portman Mansions, free on Lease Length Check.
Price per m² by year
Typical price per square metre of the flats sold each year.
2023
£11,490
2024
£15,820
2025
£11,710
Every sale in Portman Mansions
11 sales since January 2023, most recent first. Open a flat for its full sale history.
| Flat | Date | Price |
|---|---|---|
| Flat 4B | 1 Aug 2025 | £995,000 |
| Flat 5G | 28 Aug 2024 | £3,050,000 |
| Flat 10K | 11 Jul 2024 | £1,250,000 |
| Flat 5A | 28 Jun 2024 | £1,225,000 |
| Flat 2P | 19 Apr 2024 | £1,450,000 |
| Flat 1A | 22 Mar 2024 | £1,575,000 |
| Flat 3F | 12 Jan 2024 | £2,625,000 |
| Flat 1L | 19 Dec 2023 | £1,425,000 |
| Flat 14D | 24 Nov 2023 | £955,000 |
| Flat 1B | 20 Sep 2023 | £1,150,000 |
Show all 11 sales
| Flat 3E | 5 May 2023 | £2,200,000 |
Watch Chiltern Street
Free with an account. An email when a home on Chiltern Street sells, Portman Mansions included, at most one a month.