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W1H 6LH

Portman Square, Marylebone, London, W1H

£6,000,000
Not valued
3 Beds
3 Baths
177 m² Floor area
Type Flat
Listed 11 Sep 2026
Price per m² £33,898 / m²

A wraparound roof terrace and far-reaching views across two of London’s finest garden squares distinguish this three-bedroom penthouse on Portman Square. Found on the seventh floor of Fitzhardinge House, the double-aspect apartment spans approximately 1,907 sq ft and has been redesigned by Base Interior, with generous lateral proportions, underground parking and access to the square’s private gardens.



At the heart of the apartment is an impressive dining and reception room measuring almost 30 ft in length. Full-height glazing draws the outlook into the interiors, while doors open directly onto the terrace, allowing the living space to extend outdoors. The terrace continues around two sides of the apartment, looking south across the treetops of Portman Square and east towards Manchester Square.



A separate kitchen and breakfast room adjoins the reception space. Dark timber cabinetry is paired with pale worktops and integrated Gaggenau appliances, while a window above the sink brings in natural light. The dining area is arranged beside the reception room, creating an excellent flow for entertaining while keeping the kitchen discreetly separate.



The principal bedroom is particularly spacious, with extensive fitted wardrobes and doors onto the terrace. Two further double bedrooms also feature built-in storage, and one has direct access to the outdoor space. There are three beautifully finished bathrooms, two of which are ensuite, where book-matched stone, marble and dark cabinetry introduce depth and character.



Air conditioning runs throughout the apartment. Residents of Fitzhardinge House also benefit from a lift, 24-hour concierge service and a private underground parking space.



Portman Square is one of Marylebone’s most sought-after addresses, arranged around mature private gardens with a floodlit tennis court available for residents’ use. Selfridges and the shops of Oxford Street are moments away, while the independent boutiques, restaurants and cafés of Marylebone High Street are also within easy reach. Hyde Park lies a short walk to the south, with transport connections available from Bond Street and Marble Arch underground stations.

How the asking price has moved

Sep 2026
£6,000,000
Listed at original asking price

Prices, costs and transport nearby

What homes within 400 m sold for since Nov 2023, by type. Source: HM Land Registry.

Type Median Middle 80%
Flat This home
Median
123 sales
Terraced
Median
18 sales
Semi-Detached
No sales nearby
Detached
Median
1 sale

Most recent sales

Address Sold price Date Type
Flat 78, 15, 15 PORTMAN SQUARE, W1H 6LL £1,012,500 Aug 2026 Flat
Flat 6, 14 15, 14 15 FITZHARDINGE STREET, W1H 6EQ £2,367,000 Jul 2026 Flat
Flat 66, 15, 15 PORTMAN SQUARE, W1H 6LJ £2,700,000 Oct 2025 Flat
Flat 8, 35, 35 GEORGE STREET, W1U 3QP £1,400,000 Sep 2025 Flat
Flat 54, 15, 15 PORTMAN SQUARE, W1H 6LJ £2,100,000 Jul 2025 Flat
Flat 3, ST PAULS COURT, 56 MANCHESTER STREET, W1U 3AF £2,500,000 Oct 2024 Flat
Flat 6, WIGMORE COURT, 120 WIGMORE STREET, W1U 3RU £750,000 Sep 2024 Flat
Flat 28, WIGMORE COURT, 120 WIGMORE STREET, W1U 3RU £900,000 Aug 2024 Flat
Flat 68, 15, 15 PORTMAN SQUARE, W1H 6LL £2,000,000 Jun 2024 Flat
Flat 63, FITZHARDINGE HOUSE, PORTMAN SQUARE, W1H 6LH £5,000,000 Apr 2024 Flat
Flat 22, WIGMORE COURT, 120 WIGMORE STREET, W1U 3RU £1,050,000 Apr 2024 Flat
Flat 21, 35, 35 GEORGE STREET, W1U 3QP £790,000 Jan 2024 Flat
Flat 89, 15, 15 PORTMAN SQUARE, W1H 6LL £1,340,000 Dec 2023 Flat
Source: HM Land Registry · within 200 m · most recent first

Portman Square, Marylebone, London, W1H

Our estimate from nearby Land Registry sales is too far from the asking price to trust, so we don't give a verdict on this listing. 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 177 m². Updated daily.

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