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    Basement Flat 51 Onslow Gardens

    BASEMENT FLAT 51, ONSLOW GARDENS, LONDON, SW7 3QF

    This flat/maisonette leasehold property on Onslow Gardens last sold in December 2015 for £2,650,000. Based on price growth in the SW7 district since then, its estimated current value is £2,601,332 — placing it in the 99th percentile nationally and the 76th percentile within SW7.

    See wider trends for Onslow Gardens →

    Type

    Flat/Maisonette

    Tenure

    Leasehold

    Floor Area

    —

    Last Sale Price

    £2,650,000

    Dec 2015

    Estimated Valuation

    £2,601,332

    Est. £/sq ft

    —

    Property Details

    TypeFlat/Maisonette
    TenureLeasehold
    Built formNot available
    Construction ageNot available
    Habitable roomsNot available
    Main fuelNot available
    EPC currentNot available
    EPC potentialNot available
    Floor areaNot available
    EPC dateNot available
    WallsNot available
    HeatingNot available

    Transaction History

    18 Dec 2015

    £2,650,000

    1 Sept 2015

    £1,725,000

    2 Oct 2009

    £775,000

    11 Aug 2006

    £570,000

    Key Metrics

    Estimated valuation£2,601,332
    Value per sq ft / m²Not available
    Estimated gross yieldNot available
    Implied monthly rentNot available
    SW7 district percentile76th percentile
    National percentile99th percentile

    Other Properties on Onslow Gardens

    Flat 12 35Flat/Maisonette

    £1,850,000

    Mar 2026

    Flat 5 21Flat/Maisonette

    £3,700,000

    Feb 2026

    Flat 7 90Flat/Maisonette

    £1,650,000

    Jan 2026

    Flat 5 49Flat/Maisonette

    £1,050,000

    Dec 2025

    Flat 5 67Flat/Maisonette

    £1,107,500

    Aug 2025

    Flat 6 66Flat/Maisonette

    £1,125,000

    Jul 2025

    Flat 1 42Flat/Maisonette

    £3,000,000

    Jul 2025

    84aFlat/Maisonette

    £5,000,000

    Jul 2025

    Flat 3 26Flat/Maisonette

    £3,500,000

    Mar 2025

    Flat 10 30Flat/Maisonette

    £480,000

    Dec 2024

    Flat 6 42Flat/Maisonette

    £2,025,000

    Nov 2024

    Flat 2 38Flat/Maisonette

    £1,895,000

    Oct 2024

    See wider trends for Onslow Gardens →

    District Context — SW7

    See wider trends for SW7 →

    SW7 covers South Kensington and the surrounding area in central London, positioned in the heart of the capital's most prestigious neighbourhood. It is characterised by grand Victorian and Edwardian mansion blocks, world-class museums, and cultural institutions, drawing affluent professionals and international residents.

    Average Property Price - SW7

    £1,517,519

    100

    National percentile

    12 month avg at 31 Aug 2026

    Average Net Household Income - SW7

    £76,239

    100

    National percentile

    2023 census data

    10-Year Annualised Price Growth - SW7

    -4.9%

    1

    National percentile

    Estimate at 31 Aug 2026

    10-Year Annualised Rent Growth - SW

    3.2%

    8

    National percentile

    Estimate at 31 Aug 2026

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    Streets in SW7

    Cornwall Mews WestQueens Gate GardensQueens Gate TerraceEvelyn GardensQueensberry Mews WestOnslow GardensCranley MewsMontpelier TerraceAshburn GardensStanhope GardensQueens Gate PlaceClareville Grove

    Nearby districts

    SW2SW3SW4SW5SW6SW8SW9SW10SW11SW12SE22W3

    Other areas

    Romford (RM)Salisbury (SP)Sheffield (S)Shrewsbury (SY)Slough (SL)South East London (SE)Southampton (SO)Southend-on-Sea (SS)St Albans (AL)Stevenage (SG)Stockport (SK)Stoke-on-Trent (ST)