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    Flat 2 1 Onslow Gardens

    FLAT 2 1, ONSLOW GARDENS, LONDON, SW7 3LX

    This flat/maisonette leasehold property on Onslow Gardens last sold in September 2017 for £12,000,000. Based on price growth in the SW7 district since then, its estimated current value is £9,325,433 — placing it in the 99th percentile nationally and the 99th percentile within SW7. The property covers 270 m² (2,906 sq ft), giving an estimated value of £34,539 per m². The EPC rating is C, with a potential rating of B.

    See wider trends for Onslow Gardens →

    Type

    Flat/Maisonette

    Tenure

    Leasehold

    Floor Area

    2,906 sq ft

    270 m²

    Last Sale Price

    £12,000,000

    Sept 2017

    Estimated Valuation

    £9,325,433

    Est. £/sq ft

    £3,209/sq ft

    £34,539/m²

    Property Details

    TypeFlat/Maisonette
    TenureLeasehold
    Built formEnd-Terrace
    Construction ageEngland and Wales: before 1900
    Habitable rooms5
    Main fuelmains gas (not community)
    EPC currentC
    EPC potentialB
    Floor area2,906 sq ft (270 m²)
    EPC dateFeb 2016
    WallsSolid brick, as built, no insulation (assumed)
    HeatingBoiler and radiators, mains gas

    Transaction History

    21 Sept 2017

    £12,000,000

    14 Aug 1995

    £118,000

    Key Metrics

    Estimated valuation£9,325,433
    Value per sq ft / m²£3,209/sq ft (£34,539/m²)
    Estimated gross yieldNot available
    Implied monthly rentNot available
    SW7 district percentile99th percentile
    National percentile99th percentile

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    Dec 2025

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    Aug 2025

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    Jul 2025

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    Jul 2025

    84aFlat/Maisonette

    £5,000,000

    Jul 2025

    Flat 3 26Flat/Maisonette

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    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

    £1,629,408

    100

    National percentile

    12 month avg at 30 Sep 2026

    Average Net Household Income - SW7

    £76,239

    100

    National percentile

    2023 census data

    10-Year Annualised Price Growth - SW7

    -4.2%

    1

    National percentile

    Estimate at 30 Sep 2026

    10-Year Annualised Rent Growth - SW

    3.2%

    7

    National percentile

    Estimate at 30 Sep 2026

    More properties on Onslow Gardens

    Flat 6 97 Onslow SquareFlat 7 97 Onslow SquareFlat 8 97 Onslow Square97a Onslow SquareFlat 1 1 Onslow GardensFlat 1a 1 Onslow GardensFlat 4 1 Onslow GardensFlat 5 1 Onslow GardensFlat 6 1 Onslow GardensFlat 7 1 Onslow GardensFlat 1 3 - 4 Onslow GardensFlat 2 3 - 4 Onslow Gardens

    Streets in SW7

    Queens Gate GardensQueens Gate TerraceMontpelier WalkQueensberry Mews WestCranley MewsOnslow GardensStanhope GardensMontpelier TerraceAshburn GardensEvelyn 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)