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57  Onslow Square

57 Onslow SquareHouse Prices / London, Kensington and Chelsea, Onslow Square, SW7 3LR

Last updated May 2026

Key Building Insights

57 Onslow Square is a residential building situated on Onslow Square, London, SW7 with 2 addresses.

It ranks as the 138th largest and 265th most expensive of the 1,228 buildings in the SW7 area. The dominant property type is a period flat built between 1800 and 1911.

The building contains a total of 2 properties: 2 flats.

2
Properties
  • Flats

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House Pricesin 57 Onslow Square

Sale prices range from £554,054 for 1 bedroom leasehold flats with a garden (516 ft2) to £1,171,382 for 1 bedroom leasehold flats with a garden (516 ft2) .

Monthly rental prices range from £2,310 pcm for 1 bed flats to £3,843 pcm for 1 bed flats.

The gross rental yield is between 3.9% and 5.0%.

The average value per square foot is £1,669.

Average Sale Value
£862,718
Average Rental Value
£3,076 pcm
Average Rental Yield
4.3% /year
Average Value Per Sqft
£1,669 /ft2
Prices last updated 1st May 2026
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Sales History
in 57, Onslow Square, London, SW7 3LR

The last sale was on 30th September 2022 for £17,000,000 and since then the market in the area has remained stable. The building has had a total of 1 sales since 1995.

57, Onslow Square, London, SW7 3LR has seen no sales in the last three years and no sales in the last twelve months.

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Property Typesin 57 Onslow Square

  • 1 period flat built between 1800 and 1911
  • 1 other address of unknown type
  • period flat (1)
  • Unknown (1)
Energy Efficiency

Energy Efficiencyof properties in 57 Onslow Square

  • Energy Performance Certificate (EPC) surveys conducted for 1 property.
  • The dominant rating is C.
  • A (0)
  • E (0)
  • B (0)
  • F (0)
  • C (1)
  • G (0)
  • D (0)
  • No EPC (1)
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Schools Nearby

Schools Nearbyto 57, Onslow Square, London, SW7 3LR

The nearest primary school to 57, Onslow Square, London, SW7 3LR is Oratory Roman Catholic Primary School which is 379 metres away.
  • 379
    m
    Oratory Roman Catholic Primary School
  • 388
    m
    Our Lady of Victories RC Primary School
  • 540
    m
    Marlborough Primary School
The nearest secondary school is St. Thomas More Language College which is 809 metres away.
  • 809
    m
    St. Thomas More Language College
  • 1.8
    km
    Chelsea Academy
  • 1.9
    km
    The London Oratory School
More reading links
Source: Ofsted 2026
Public Transport Nearby

Public Transport Nearbyto 57, Onslow Square, London, SW7 3LR

The closest station to 57, Onslow Square, London, SW7 3LR is South Kensington station which is 100 metres away.

  • 123
    m
    South Kensington
  • 624
    m
    Gloucester Road
  • 1.1
    km
    Knightsbridge
  • 1.2
    km
    Sloane Square
Source: TfL
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