Flat 66 15 Portman Square

    FLAT 66 15, PORTMAN SQUARE, LONDON, W1H 6LJ

    This flat/maisonette leasehold property on Portman Square last sold in October 2025 for £2,700,000. Based on price growth in the W1H district since then, its estimated current value is £2,700,000 — placing it in the 99th percentile nationally and the 86th percentile within W1H. The property covers 107 m² (1,152 sq ft), giving an estimated value of £25,234 per m². The EPC rating is E, with a potential rating of C.

    Type

    Flat/Maisonette

    Tenure

    Leasehold

    Floor Area

    1,152 sq ft

    107 m²

    Last Sale Price

    £2,700,000

    Oct 2025

    Estimated Valuation

    £2,700,000

    Est. £/sq ft

    £2,344/sq ft

    £25,234/m²

    Property Details

    TypeFlat/Maisonette
    TenureLeasehold
    Built formDetached
    Construction ageEngland and Wales: 1900-1929
    Habitable rooms3
    Main fuelmains gas (community)
    EPC currentE
    EPC potentialC
    Floor area1,152 sq ft (107 m²)
    EPC dateSept 2018
    WallsSolid brick, as built, no insulation (assumed)
    HeatingCommunity scheme

    Transaction History

    7 Oct 2025

    £2,700,000

    26 Feb 2021

    £2,000,000

    4 Mar 1998

    £420,000

    14 Mar 1997

    £225,000

    Key Metrics

    Estimated valuation£2,700,000
    Value per sq ft / m²£2,344/sq ft (£25,234/m²)
    Estimated gross yieldNot available
    Implied monthly rentNot available
    W1H district percentile86th percentile
    National percentile99th percentile

    District Context — W1H

    W1H covers central London, encompassing parts of Mayfair and surrounding areas in Westminster's most prestigious neighbourhoods. It is characterised by ultra-prime residential property, global wealth concentration, and some of London's most sought-after addresses.

    Average Property Price - W1H

    £1,546,725

    99

    National percentile

    Average Net Household Income - W1H

    £67,286

    100

    National percentile

    10-Year Annualised Price Growth - W1H

    -0.7%

    2

    National percentile

    10-Year Annualised Rent Growth - W1H

    2.8%

    2

    National percentile

    View full analysis for W1H

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