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    Flat 1 81 Onslow Square

    FLAT 1 81, ONSLOW SQUARE, LONDON, SW7 3LT

    This flat/maisonette leasehold property on Onslow Square last sold in September 2017 for £632,000. Based on price growth in the SW7 district since then, its estimated current value is £491,139 — placing it in the 78th percentile nationally and the 5th percentile within SW7. The property covers 102 m² (1,098 sq ft), giving an estimated value of £4,815 per m². The EPC rating is D, with a potential rating of C.

    See wider trends for Onslow Square →

    Type

    Flat/Maisonette

    Tenure

    Leasehold

    Floor Area

    1,098 sq ft

    102 m²

    Last Sale Price

    £632,000

    Sept 2017

    Estimated Valuation

    £491,139

    Est. £/sq ft

    £447/sq ft

    £4,815/m²

    Property Details

    TypeFlat/Maisonette
    TenureLeasehold
    Built formMid-Terrace
    Construction ageEngland and Wales: before 1900
    Habitable rooms2
    Main fuelmains gas (community)
    EPC currentD
    EPC potentialC
    Floor area1,098 sq ft (102 m²)
    EPC dateAug 2019
    WallsSolid brick, as built, no insulation (assumed)
    HeatingCommunity scheme

    Transaction History

    5 Sept 2017

    £632,000

    Key Metrics

    Estimated valuation£491,139
    Value per sq ft / m²£447/sq ft (£4,815/m²)
    Estimated gross yieldNot available
    Implied monthly rentNot available
    SW7 district percentile5th percentile
    National percentile78th percentile

    Other Properties on Onslow Square

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    Feb 2026

    Flat 8 20Flat/Maisonette

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    Dec 2025

    Flat 2 11Flat/Maisonette

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    Nov 2025

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    Oct 2025

    Flat 10 81Flat/Maisonette

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    Aug 2025

    Flat 9 14Flat/Maisonette

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    Jun 2025

    Flat 31 Malvern CourtFlat/Maisonette

    £1,850,000

    Apr 2025

    Flat 21 Malvern CourtFlat/Maisonette

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    Mar 2025

    Flat 16 27Flat/Maisonette

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    Nov 2024

    Flat 2 23Flat/Maisonette

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    Nov 2024

    Flat 12 25Flat/Maisonette

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    See wider trends for Onslow Square →

    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 Jul 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 Jul 2026

    10-Year Annualised Rent Growth - SW

    3.2%

    8

    National percentile

    Estimate at 31 Jul 2026

    More properties on Onslow Square

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    Streets in SW7

    Cheval PlaceMontpelier WalkRutland Mews SouthManson MewsQueens GateOnslow SquarePetersham MewsAshburn PlaceKynance MewsLancelot PlaceGloucester RoadPrinces Gate

    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)