Flat 66, 15 Portman Square
W1H 6LJ, City of Westminster. A leasehold flat on the 10th floor.
The only sale of this flat recorded since January 2023.
Home Report
Everything about Flat 66, 15 Portman Square in one PDF
Things to check before you offer, every sale in W1H 6 in the last 12 months, crime, schools and stations.
Found for Flat 66, 15 Portman Square
Against W1H
+£1,840,000
Above the typical W1H flat, £860,000, Sep 2025 to Aug 2026.
£860,000 This flat
£2,700,000
On Portman Square
6th of 17
Flat sales since 2023, by price. The street's typical is £2,000,000.
W1H by year
£795,000
Typical W1H flat in 2026 so far, down 36.4% since 2023.
Resold in W1H
7 of 11 up
W1H flats sold twice since 2023. Typical change +7.5%.
The flat
From its energy certificate, Sep 2018.
Lease
A 74-year lease from 25 Dec 1986. 35 years were left when it sold in October 2025.
Want the lease in detail? Check this flat on Lease Length Check, free.
Watch Portman Square
Free. An email when a home on Portman Square sells, at most one a month.