Sold Flat

FLAT 97

15 PORTMAN SQUARE, LONDON, GREATER LONDON W1H 6LL

4 beds 2 baths 110 m² Listed 4 Sep 2019 (-2455d)

£750,000

Reduced on 7 Feb 2020

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Property details

Tenure

LEASEHOLD

Floor area

110 m²

Last sold

£750,000 Nov 2020

Local average

£1,848,077 (-59.4%)

Deprivation

Decile 8 (26,473 of 33,755)

Street crime

2943 incidents within 1 mile (Mar 2026)

Key features

  • Large Reception Room
  • Separate Kitchen
  • Master Bedroom with En Suite
  • Two Further Double Bedrooms
  • Single Bedroom
  • Shower Room
  • Guest Cloakroom
  • Lease Expires 01/04/2033

Additional details

Garden
Yes

Description

Lease Expires 01/04/2033
A bright, 4 bedroom, 2 bathroom apartment on the 5th floor of this stunning block on Portman Square. Comprising separate kitchen, bright reception room, guest cloakroom, master bedroom with en suite and built in storage, 2 further double bedrooms, shower room and single bedroom.
The building benefits from lift access, communal heating, excellent security with 24 hour porterage and access to the prestigious garden square and private tennis court. Portman Square is ideally located close to the fashionable amenities of Marylebone and Mayfair, including the world renowned Selfridges department store, Marylebone Village, Oxford Street and the green open spaces of Hyde Park. Conveniently positioned for transport connections, including Marble Arch Underground Station (Central Line) and Bond Street Underground Station (Jubilee & Central Lines).

Listed by

London - Sales

Manors

Reference: 73929391

EPC Rating & Upgrade Cost

Fetching EPC data… Refresh this page in a moment.

Flood risk

Zone: 1

Risk: Low

Job (default Low)

Floorplans

Floorplan

Floorplan

Price history

Event Date Price % change
Sold 16/11/2020 (5 years ago) £750,000 —

Source: HM Land Registry Price Paid Data. Crown copyright.

Sold Comparables

Same street and nearby sales within 0.25 miles (last 5 years). Data from Land Registry Price Paid.

Address Price Date Type
15 FLAT 54 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LJ £2,100,000 11/07/2025 Flat
Same street 15 FLAT 89 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LL £1,340,000 14/12/2023 Flat
Same street 15 FLAT 96 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LL £1,200,000 01/11/2023 Flat
15 FLAT 3 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LJ £450,000 13/10/2023 Flat
15 FLAT 26 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LJ £1,950,000 21/07/2023 Flat
55 APARTMENT 10 GEORGE STREET, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1U 8AU £3,772,215 19/05/2023 Flat
55 APARTMENT 9 GEORGE STREET, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1U 8AU £2,704,011 19/05/2023 Flat
Same street 15 FLAT 72 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LL £920,000 09/12/2022 Flat
15 FLAT 29 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LJ £2,150,000 22/07/2022 Flat
15 FLAT 37 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LJ £2,000,000 01/07/2022 Flat
FITZHARDINGE HOUSE FLAT 57 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LH £507,000 04/03/2022 Flat
55 APARTMENT 10 GEORGE STREET, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1U 8AU £2,825,000 27/01/2022 Flat
55 APARTMENT 9 GEORGE STREET, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1U 8AU £2,025,000 27/01/2022 Flat
30 APARTMENT 8 PORTMAN CLOSE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6DB £3,700,000 15/12/2021 Flat
FITZHARDINGE HOUSE FLAT 2 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LQ £1,725,000 30/09/2021 Flat
Same street 15 FLAT 67 PORTMAN SQUARE, LONDON, CITY OF WESTMINSTER, GREATER LONDON, W1H 6LL £1,700,000 20/07/2021 Flat

Street average: £1,290,000 (4 sales)

Area average: £2,159,019 (12 sales)

Capital growth trend

Land Registry outcode average: last 12 months vs 5y and 10y ago (from sold prices).

5y growth -30.3%
10y growth -38.2%

House Price Index (HM Land Registry — official index, not sold-price averages): City of Westminster. Series: Flats and maisonettes. As of February 2026.

1y (index) -13.2%
5y (index) -16%
10y (index) -18.3%

Company ownership

Registered legal owner is a company.

Company-owned (UK company) Company-owned (Overseas company)

Company: WILLOWGREEN PORTMAN SQUARE LIMITED (2247192)

Rental Range

Estimated market rent for Westminster. Low = conservative, Realistic = average, Optimistic = best case.

Low £2,834/mo
Realistic £3,149/mo
Optimistic £3,464/mo

Based on Local Authority from postcode lookup → Westminster.

LHA (30th percentile) floor for Central London: £3,052/mo (Apr 2025 – Mar 2026)

Location

Map view View on Google Maps View on OpenStreetMap Street View W1H 6LL

Nearby

Nearest stations, universities and amenities (distance from property).

Type Name Distance
Shop Sharps 0.0 miles
Bus stop Portman Square 0.0 miles
Shop WED2B London 0.1 miles
Train station Marble Arch 0.2 miles
Train station Bond Street 0.3 miles
University LBS Behaviour Lab 0.6 miles
Hospital The Portland Hospital 0.7 miles
Hospital National Hospital for Neurology and Neurosurgery at Cleveland Street 0.8 miles
University Department of Geography 1.1 miles

Street-level crime

Category Count
Theft from the person 670
Other theft 524
Shoplifting 422
Violence and sexual offences 385
Anti-social behaviour 366
Burglary 103
Public order 99
Robbery 86
Vehicle crime 83
Criminal damage and arson 77
Drugs 76
Bicycle theft 25
Other crime 20
Possession of weapons 7
Total incidents 2943

Within 1 mile during Mar 2026. Source: data.police.uk (England & Wales).

Schools nearby

Nearest open schools with Ofsted ratings (England). Closed schools are not shown. Data from Get Information about Schools and Ofsted.

Name Type Distance Ofsted
St Vincent's Catholic Primary School Primary 0.2 miles Outstanding — 4 Feb 2024
Wetherby Preparatory School Other 0.2 miles — (No rating)
Halcyon London International School Other 0.3 miles Outstanding — 27 May 2020
Wetherby Senior School Other 0.3 miles — (No rating)
Sylvia Young Theatre School Other 0.3 miles — (No rating)

Rental Comparables

Residential lets from OpenRent and Rightmove for the area (same bedroom count). Use to validate rent estimates. Student lets are excluded.

Title Rent Beds Distance As seen on
4 Bed Flat, Wheatley St, W1G £5,200/mo 4 0.33 miles OpenRent

Average rent: £5,200/mo (1 listing)

Rent-driven metrics

Based on OpenRent comparables.

Rent ratio 0.69%
Max investor price (0.8%) £650,000
Target investor price (1%) £520,000
Gross yield 8.3%
Cost-to-rent ratio 12×
Monthly cashflow £1,701/mo 75% LTV, 3.95% APR (5yr fixed), 25yr term
Cash-on-cash ROI 9.4%
  • Rent ratio — Monthly rent ÷ purchase price (1% rule). 1%+ = strong, 0.8–1% = okay, <0.8% = weak for cashflow.
  • Max investor price — Rent ÷ 0.8%; the price at which rent would be 0.8% of price (Stoke-style target).
  • Target investor price — Rent ÷ 1%; the price at which rent would be 1% of price (strong cashflow band).
  • Gross yield — Annual rent as % of purchase price (no costs).
  • Cost-to-rent — Price ÷ annual rent (from OpenRent comparables). Under 14× = strong, 14–16× = acceptable, 17×+ = compressed.
  • Cashflow — Rent minus mortgage, 10% maintenance, £25/mo compliance. Assumes 75% LTV, 3.95% APR (5yr fixed), 25yr term.
  • ROI — Annual profit ÷ cash in (deposit + 4% purchase costs).