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Bricks&Logic is a trading name of Urban Markets Ltd
Company No. 11113204
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VAT No. GB 287 0845 68
Registered Address: 2 Leman St, London E1 8FA
9, Onslow Square, London, SW7 3NJ
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9 Onslow SquareHouse Prices / London, Kensington and Chelsea, Onslow Square, SW7 3NJ
Last updated May 2026
Key Building Insights
9 Onslow Square is a residential building situated on Onslow Square, London, SW7 with 2 addresses.
It ranks as the 166th largest and 634th 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
Key Building Insights
9 Onslow Square is a residential building situated on Onslow Square, London, SW7 with 2 addresses.
It ranks as the 166th largest and 634th 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 9 Onslow Square
Sale prices range from £683,673 for 1 bedroom leasehold flats with a garden (365 ft2) to £1,520,873 for 2 bedroom leasehold flats with a garden (775 ft2) .
Monthly rental prices range from £2,152 pcm for 1 bed flats to £4,706 pcm for 2 bed flats.
The gross rental yield is between 3.7% and 3.8%.
The average value per square foot is £1,915.
Average Sale Value
£1,102,273
Average Rental Value
£3,429 pcm
Average Rental Yield
3.7% /year
Average Value Per Sqft
£1,915 /ft2
Sales Market Trendsin 9 Onslow Square
The current average value in the building is £1,102,273.
The 9 Onslow Square Sales Market has decreased by 19.8% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | -2.7% | £1,102,273 |
| April 2025 | -4% | £1,132,863 |
| April 2024 | -2.2% | £1,180,432 |
| April 2023 | -4.9% | £1,207,595 |
| April 2022 | 6.1% | £1,269,406 |
| April 2021 | -3.3% | £1,196,603 |
| April 2020 | 3.6% | £1,237,098 |
| April 2019 | -1.7% | £1,194,302 |
| April 2018 | -5.6% | £1,214,549 |
| April 2017 | -6.4% | £1,286,832 |
| April 2016 | -1.8% | £1,374,707 |
| April 2015 | 4.1% | £1,400,472 |
| April 2014 | 18.1% | £1,345,131 |
| April 2013 | 3.7% | £1,139,045 |
| April 2012 | 14.4% | £1,097,977 |
| April 2011 | 12.2% | £959,726 |
| April 2010 | 12.7% | £855,362 |
| April 2009 | -10.9% | £759,056 |
| April 2008 | 18% | £851,761 |
| April 2007 | 0% | £721,991 |
Rental Market Trendsin 9 Onslow Square
The current average rental value in the building is £3,429.
The 9 Onslow Square Rental Market has increased by 34.7% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | 6.5% | £3,429pcm |
| April 2025 | 4.4% | £3,220pcm |
| April 2024 | 1% | £3,085pcm |
| April 2023 | 11.3% | £3,053pcm |
| April 2022 | 26.2% | £2,743pcm |
| April 2021 | -11.4% | £2,173pcm |
| April 2020 | -1.4% | £2,451pcm |
| April 2019 | 3.2% | £2,485pcm |
| April 2018 | -1.6% | £2,409pcm |
| April 2017 | -3.8% | £2,448pcm |
| April 2016 | -2.1% | £2,546pcm |
| April 2015 | 3.5% | £2,602pcm |
| April 2014 | 1.6% | £2,513pcm |
| April 2013 | -0.3% | £2,474pcm |
| April 2012 | 3% | £2,481pcm |
| April 2011 | 10.8% | £2,408pcm |
| April 2010 | 9.3% | £2,172pcm |
| April 2009 | -14.8% | £1,988pcm |
| April 2008 | 6.4% | £2,334pcm |
| April 2007 | 0% | £2,194pcm |
Explore Propertiesin 9, Onslow Square, London, SW7 3NJ
Property Typesin 9 Onslow Square
- 2 period flats built between 1800 and 1911
- period flat (2)
Energy Efficiencyof properties in 9 Onslow Square
- Energy Performance Certificate (EPC) surveys conducted for 2 properties.
- The dominant rating is C.
- A (0)
- E (0)
- B (0)
- F (0)
- C (1)
- G (0)
- D (1)
- No EPC (0)
Top 3 Most Expensive Saleson Onslow Square, London, SW7
Schools Nearbyto 9, Onslow Square, London, SW7 3NJ
The nearest primary school to 9, 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 9, Onslow Square, London, SW7 3NJ
The closest station to 9, 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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