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Bricks&Logic is a trading name of Urban Markets Ltd
Company No. 11113204
  | Â
VAT No. GB 287 0845 68
Registered Address: 2 Leman St, London E1 8FA
25, Onslow Square, London, SW7 3NJ
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25 Onslow SquareHouse Prices / London, Kensington and Chelsea, Onslow Square, SW7 3NJ
Last updated May 2026
Key Building Insights
25 Onslow Square is a residential building situated on Onslow Square, London, SW7 with 13 addresses.
It ranks as the 1065th largest and 752nd 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 13 properties: 13 flats.
13
Properties
- Flats
Key Building Insights
25 Onslow Square is a residential building situated on Onslow Square, London, SW7 with 13 addresses.
It ranks as the 1065th largest and 752nd 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 13 properties: 13 flats.
13
Properties
- Flats
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House Pricesin 25 Onslow Square
Sale prices range from £585,115 for 1 bedroom leasehold flats with a garden (430 ft2) to £1,930,846 for 3 bedroom leasehold flats (1,463 ft2) .
Monthly rental prices range from £2,420 pcm for 1 bed flats to £7,498 pcm for 3 bed flats.
The gross rental yield is between 4.7% and 5.0%.
The average value per square foot is £1,324.
Average Sale Value
£1,383,212
Average Rental Value
£5,489 pcm
Average Rental Yield
4.8% /year
Average Value Per Sqft
£1,324 /ft2
Sales Market Trendsin 25 Onslow Square
The last sale in 25 Onslow Square sold for £560,000 on 11th October 2024. Since then prices are down an average of 4.5%.
The current average value in the building is £1,383,212.
The 25 Onslow Square Sales Market has decreased by 20.7% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | -2.3% | £1,383,212 |
| April 2025 | -4.5% | £1,415,859 |
| April 2024 | -2.5% | £1,482,714 |
| April 2023 | -4.1% | £1,521,178 |
| April 2022 | 6.1% | £1,585,527 |
| April 2021 | -3.6% | £1,494,953 |
| April 2020 | 2.9% | £1,550,862 |
| April 2019 | -1.7% | £1,506,829 |
| April 2018 | -5.1% | £1,533,624 |
| April 2017 | -7.4% | £1,615,824 |
| April 2016 | -1.9% | £1,744,492 |
| April 2015 | 3.1% | £1,777,729 |
| April 2014 | 18.2% | £1,724,632 |
| April 2013 | 3.9% | £1,458,712 |
| April 2012 | 14.8% | £1,404,607 |
| April 2011 | 12.8% | £1,223,849 |
| April 2010 | 13.1% | £1,084,704 |
| April 2009 | -10.9% | £958,662 |
| April 2008 | 19% | £1,076,067 |
| April 2007 | 0% | £904,117 |
Rental Market Trendsin 25 Onslow Square
The current average rental value in the building is £5,489.
The 25 Onslow Square Rental Market has increased by 33.2% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | 6.9% | £5,489pcm |
| April 2025 | 3.9% | £5,134pcm |
| April 2024 | 0.8% | £4,943pcm |
| April 2023 | 12.3% | £4,906pcm |
| April 2022 | 26.2% | £4,370pcm |
| April 2021 | -11.7% | £3,462pcm |
| April 2020 | -2% | £3,919pcm |
| April 2019 | 3.1% | £3,999pcm |
| April 2018 | -1.1% | £3,880pcm |
| April 2017 | -4.9% | £3,922pcm |
| April 2016 | -2.2% | £4,122pcm |
| April 2015 | 2.5% | £4,213pcm |
| April 2014 | 1.7% | £4,111pcm |
| April 2013 | -0.2% | £4,041pcm |
| April 2012 | 3.4% | £4,049pcm |
| April 2011 | 11.5% | £3,916pcm |
| April 2010 | 9.7% | £3,514pcm |
| April 2009 | -14.9% | £3,202pcm |
| April 2008 | 7.3% | £3,762pcm |
| April 2007 | 0% | £3,504pcm |
Explore Propertiesin 25, Onslow Square, London, SW7 3NJ
- Flat 1, 25, Onslow Square, London, SW7 3NJ
- Flat 2, 25, Onslow Square, London, SW7 3NJ
- Flat 3, 25, Onslow Square, London, SW7 3NJ
- Flat 4, 25, Onslow Square, London, SW7 3NJ
- Flat 5, 25, Onslow Square, London, SW7 3NJ2 bed period flat
- Flat 6, 25, Onslow Square, London, SW7 3NJ2 bed period flat
- Flat 7, 25, Onslow Square, London, SW7 3NJ
- Flat 8, 25, Onslow Square, London, SW7 3NJ3 bed period flat
- Flat 9, 25, Onslow Square, London, SW7 3NJ
- Flat 10, 25, Onslow Square, London, SW7 3NJ3 bed flat
- Flat 11, 25, Onslow Square, London, SW7 3NJ2 bed period flat
- Flat 12, 25, Onslow Square, London, SW7 3NJ3 bed period flat
- Flat 1A, 25, Onslow Square, London, SW7 3NJ1 bed period flat
Sales Historyin 25, Onslow Square, London, SW7 3NJ
The last sale was on 11th October 2024 for £560,000 and since then the market in the area has decreased by 4.5%. The building has had a total of 11 sales since 1995.
25, Onslow Square, London, SW7 3NJ has seen 2 sales in the last three years and no sales in the last twelve months.
Sold Oct 2024£560,000 | 3 Bed Flat25, Onslow SquareFlat 12, 25, Onslow Square, London, SW7 3NJ
Sold Jul 2023£1,600,000 | 2 Bed Flat25, Onslow SquareFlat 11, 25, Onslow Square, London, SW7 3NJ
Sold Oct 2020£560,000 | 1 Bed Flat25, Onslow SquareFlat 1A, 25, Onslow Square, London, SW7 3NJ
Sold Aug 2013£2,600,000 | 3 Bed Flat25, Onslow SquareFlat 10, 25, Onslow Square, London, SW7 3NJ
Sold Mar 2013£3,600,000 | 3 Bed Flat25, Onslow SquareFlat 8, 25, Onslow Square, London, SW7 3NJ
Sold Jan 2013£2,000,000 | 3 Bed Flat25, Onslow SquareFlat 8, 25, Onslow Square, London, SW7 3NJ
Sold Sep 2001£259,000 | 1 Bed Flat25, Onslow SquareFlat 1A, 25, Onslow Square, London, SW7 3NJ
Sold Apr 2000£735,000 | 2 Bed Flat25, Onslow SquareFlat 5, 25, Onslow Square, London, SW7 3NJ
Sold Feb 2000£185,000 | 1 Bed Flat25, Onslow SquareFlat 1A, 25, Onslow Square, London, SW7 3NJ
Sold Nov 1998£115,000 | 1 Bed Flat25, Onslow SquareFlat 1A, 25, Onslow Square, London, SW7 3NJ
Sold Oct 1998£129,000 | 3 Bed Flat25, Onslow SquareFlat 7, 25, Onslow Square, London, SW7 3NJ
Property Typesin 25 Onslow Square
- 6 period flats built between 1800 and 1911
- 1 flat of an unknown age
- 6 other addresses of unknown type
- period flat (6)
- flat (1)
- Unknown (6)
Energy Efficiencyof properties in 25 Onslow Square
- Energy Performance Certificate (EPC) surveys conducted for 6 properties.
- The dominant rating is C.
- A (0)
- E (2)
- B (0)
- F (0)
- C (4)
- G (0)
- D (0)
- No EPC (7)
Top 3 Most Expensive Saleson Onslow Square, London, SW7
Schools Nearbyto 25, Onslow Square, London, SW7 3NJ
The nearest primary school to 25, Onslow Square, London, SW7 3NJ is Oratory Roman Catholic Primary School which is 322 metres away.
- 322mOratory Roman Catholic Primary School
- 447mMarlborough Primary School
- 480mOur Lady of Victories RC Primary School
The nearest secondary school is St. Thomas More Language College which is 716 metres away.
- 716mSt. Thomas More Language College
- 1.8kmChelsea Academy
- 1.9kmThe London Oratory School
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Public Transport Nearbyto 25, Onslow Square, London, SW7 3NJ
The closest station to 25, Onslow Square, London, SW7 3NJ is South Kensington station which is 200 metres away.
- 164mSouth Kensington
- 714mGloucester Road
- 1.0kmKnightsbridge
- 1.1kmSloane Square
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