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    Flat 12 42 Onslow Gardens

    FLAT 12 42, ONSLOW GARDENS, LONDON, LONDON, SW7 3PY

    This flat/maisonette leasehold property on Onslow Gardens last sold in April 2007 for £1,251,000. Based on price growth in the SW7 district since then, its estimated current value is £2,349,683 — placing it in the 99th percentile nationally and the 72nd percentile within SW7. The property covers 105 m² (1,130 sq ft), giving an estimated value of £22,378 per m². The EPC rating is D, with a potential rating of C.

    See wider trends for Onslow Gardens →

    Type

    Flat/Maisonette

    Tenure

    Leasehold

    Floor Area

    1,130 sq ft

    105 m²

    Last Sale Price

    £1,251,000

    Apr 2007

    Estimated Valuation

    £2,349,683

    Est. £/sq ft

    £2,079/sq ft

    £22,378/m²

    Property Details

    TypeFlat/Maisonette
    TenureLeasehold
    Built formMid-Terrace
    Construction ageEngland and Wales: before 1900
    Habitable rooms4
    Main fuelmains gas (not community)
    EPC currentD
    EPC potentialC
    Floor area1,130 sq ft (105 m²)
    EPC dateApr 2021
    WallsSolid brick, as built, no insulation (assumed)
    HeatingBoiler and radiators, mains gas

    Transaction History

    18 Apr 2007

    £1,251,000

    31 May 1996

    £365,000

    Key Metrics

    Estimated valuation£2,349,683
    Value per sq ft / m²£2,079/sq ft (£22,378/m²)
    Estimated gross yieldNot available
    Implied monthly rentNot available
    SW7 district percentile72nd percentile
    National percentile99th percentile

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    Aug 2025

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    Jul 2025

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    Jul 2025

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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

    £1,517,519

    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

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    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)