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Not valued

W1H 6LL

15 Portman Square

3 Beds
3 Baths
144 m² Floor area
Type Flat
Listed 15 May 2026
Asking price £5,500,000
Price per m² £43,403 / m²


 










Located within the highly sought-after Portman Square, Fifteen Portman Square is an elegant purpose-built 1930s development positioned on the prestigious north side of the square. Residents benefit from 24-hour security, lift access, communal heating and hot water, as well as exclusive access to the private Portman Square gardens, including a residents tennis court.


Perfectly situated moments from Selfridges, Oxford Street and the open green spaces of Hyde Park, the location offers some of the very best shopping, dining and lifestyle amenities in Central London.


The apartment has been completely renovated into a truly exceptional three-bedroom residence, finished to an outstanding standard throughout. Accommodation comprises an impressive entrance hall, elegant reception room, fully fitted contemporary kitchen, three double bedrooms, luxurious bathrooms and excellent storage.


Additional benefits include:
24 Hour Porter & Security
Lift Access
Communal Heating & Hot Water
Private Residents Gardens
Tennis Court









How the asking price has moved

May 2026
£6,250,000
Listed at original asking price
Jul 2026
£5,500,000
Current asking price

What similar homes actually sold for

Nearby Land Registry transactions — the data behind our fair price estimate.

Address Sold price Date Type
Flat 68, 15, 15 PORTMAN SQUARE, W1H 6LL £2,000,000 Jun 2024 Flat
Flat 89, 15, 15 PORTMAN SQUARE, W1H 6LL £1,340,000 Dec 2023 Flat
Flat 96, 15, 15 PORTMAN SQUARE, W1H 6LL £1,200,000 Nov 2023 Flat
Flat 67, 15, 15 PORTMAN SQUARE, W1H 6LL £1,700,000 Jul 2021 Flat
Flat 101, 15, 15 PORTMAN SQUARE, W1H 6LL £1,350,000 Mar 2021 Flat
Flat 97, 15, 15 PORTMAN SQUARE, W1H 6LL £750,000 Nov 2020 Flat
Flat 89, 15, 15 PORTMAN SQUARE, W1H 6LL £1,260,000 Feb 2020 Flat
Flat 100, 15, 15 PORTMAN SQUARE, W1H 6LL £1,430,000 Jan 2020 Flat
Flat 82, 15, 15 PORTMAN SQUARE, W1H 6LL £2,050,000 Jul 2019 Flat
Source: HM Land Registry · W1H 6LL · Sorted by date

15 Portman Square

We don't have enough nearby Land Registry sales matched to EPC floor-area data for this postcode and property type to calculate a fair price estimate. All other details are still available.

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About this valuation

Fair price calculated from HM Land Registry sold prices in the same postcode area, adjusted by the UK House Price Index, and multiplied by the EPC-declared floor area of 144 m². Updated daily.