Onslow Square - SW7 3NJ
Key Postcode Insights
SW7 3NJ is a residential postcode situated on Onslow Square, London, SW7 with 53 addresses.
It ranks as the 445th largest and 276th most expensive of the 505 postcodes in the SW7 area. The most common property type is a period flat built between 1800 and 1911.
The postcode contains a total of 53 properties: 50 flats and 3 other properties.
- Ave. Sale Price
- £1,975,842
- 10 Year change
- down 18.3%
- Ave. Rental Price
- £6,404pcm
- 10 Year change
- up 38.7%
- Ave. £ per ft²
- £1,903/ft²
- Ave. Gross Yield
- 3.9%/year/yr
Key Postcode Insights
SW7 3NJ is a residential postcode situated on Onslow Square, London, SW7 with 53 addresses.
It ranks as the 445th largest and 276th most expensive of the 505 postcodes in the SW7 area. The most common property type is a period flat built between 1800 and 1911.
The postcode contains a total of 53 properties: 50 flats and 3 other properties.
- Ave. Sale Price
- £1,975,842
- 10 Year change
- down 18.3%
- Ave. Rental Price
- £6,404pcm
- 10 Year change
- up 38.7%
- Ave. £ per ft²
- £1,903/ft²
- Ave. Gross Yield
- 3.9%/year/yr
Explore Properties in SW7 3NJ
- Park Cottage
Flat
- 1 Onslow Square
3 Bed Period Flat
- 5 Onslow Square
Period Building | 8 Units
- 7 Onslow Square
Flat
- 9 Onslow Square
Building | 2 Flats
Sales Market Trends
The last sale in SW7 3NJ sold for £2,750,000 on 20th November 2025. Since then prices are down an average of 1.5%.
The current average value in the postcode is £1,975,842.
The SW7 3NJ Sales Market has decreased by 18.3% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| July 2026 | -3.1% | £1,975,842 |
| July 2025 | -3.3% | £2,038,366 |
| July 2024 | -3.2% | £2,108,887 |
| July 2023 | -3.4% | £2,178,928 |
| July 2022 | 4% | £2,255,161 |
| July 2021 | -1.6% | £2,167,810 |
| July 2020 | 3.3% | £2,203,718 |
| July 2019 | -0.9% | £2,134,201 |
| July 2018 | -5.3% | £2,153,592 |
| July 2017 | -5.9% | £2,274,176 |
| July 2016 | -3.2% | £2,417,841 |
| July 2015 | 0% | £2,498,867 |
| July 2014 | 14.5% | £2,498,516 |
| July 2013 | 5.7% | £2,182,134 |
| July 2012 | 13.6% | £2,063,794 |
| July 2011 | 14.4% | £1,817,266 |
| July 2010 | 14.6% | £1,588,672 |
| July 2009 | -4.5% | £1,386,803 |
| July 2008 | 5.4% | £1,451,891 |
| July 2007 | 0% | £1,377,775 |
Rental Market Trends
The current average rental value in the postcode is £6,404.
The SW7 3NJ Rental Market has increased by 38.7% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| July 2026 | 7% | £6,404pcm |
| July 2025 | 3.8% | £5,985pcm |
| July 2024 | 1.7% | £5,767pcm |
| July 2023 | 10.2% | £5,670pcm |
| July 2022 | 23.1% | £5,143pcm |
| July 2021 | -2.3% | £4,179pcm |
| July 2020 | -7.7% | £4,279pcm |
| July 2019 | 3.5% | £4,635pcm |
| July 2018 | 0.7% | £4,476pcm |
| July 2017 | -3.7% | £4,443pcm |
| July 2016 | -4.4% | £4,616pcm |
| July 2015 | 2.4% | £4,829pcm |
| July 2014 | 0.4% | £4,714pcm |
| July 2013 | 0.8% | £4,697pcm |
| July 2012 | 1% | £4,659pcm |
| July 2011 | 8.7% | £4,613pcm |
| July 2010 | 15.8% | £4,243pcm |
| July 2009 | -11.9% | £3,663pcm |
| July 2008 | 2.4% | £4,158pcm |
| July 2007 | 0% | £4,060pcm |
Sales History
The last recorded sale was on 20th November 2025 for £2,750,000 and since then the market in the area has decreased by 1.5%.
SW7 3NJ has had 3 sales since 1995, with 3 in the last three years and 1 in the last twelve months.
- Sold Nov 2025£2,750,000 | 3 Bed FlatFlat 2, 11, Onslow Square, London, SW7 3NJFlat 2, 11, Onslow Square, London, SW7 3NJ
- Sold Nov 2024£2,825,000 | 3 Bed FlatFlat 2, 23, Onslow Square, London, SW7 3NJFlat 2, 23, Onslow Square, London, SW7 3NJ
- Sold Oct 2024£560,000 | 3 Bed FlatFlat 12, 25, Onslow Square, London, SW7 3NJFlat 12, 25, Onslow Square, London, SW7 3NJ
Nearby Postcodes
SW7 3NJ is the 445th largest and the 276th most expensive postcode out of the 505 postcodes in the SW7 area.
- SW7 3NL, Sydney Place, London, SW7SW7 3NL12 Addresses|69 m away
- SW7 2NR, Pelham Crescent, London, SW7SW7 2NR14 Addresses|72 m away
- SW7 2NQ, Pelham Place, London, SW7SW7 2NQ15 Addresses|80 m away
- SW7 3NP, Onslow Square, London, SW7SW7 3NP34 Addresses|83 m away
- SW7 3NH, Onslow Square, London, SW7SW7 3NH23 Addresses|84 m away
Property Types
- 50 period flats built between 1800 and 1911
- 3 other addresses of unknown type
- period flat (50)
- Unknown (3)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys have been conducted for 34 properties.
- The most common rating is C.
- A (0)
- E (4)
- B (1)
- F (0)
- C (17)
- G (0)
- D (12)
- No EPC (19)
Top 3 Most Expensive Sales
- Sold Sep 2022£17,000,000 | 1 Bed Flat57, Onslow Square, London, SW7 3LR57, Onslow Square, London, SW7 3LR
- Sold Dec 2017£7,550,000 | 4 Bed FlatFlat 3, 32, Onslow Square, London, SW7 3NSFlat 3, 32, Onslow Square, London, SW7 3NS
- Sold May 2020£6,700,000 | 2 Bed FlatFlat 2, 38, Onslow Square, London, SW7 3NSFlat 2, 38, Onslow Square, London, SW7 3NS
Schools Nearby
- Oratory Roman Catholic Primary School300 m away
- Marlborough Primary School400 m away
- Our Lady of Victories RC Primary School500 m away
- St. Thomas More Language College700 m away
- Chelsea Academy1.8 km away
- The London Oratory School1.9 km away
More reading links
Public Transport Nearby
The closest station to SW7 3NJ is South Kensington station, which is 200 metres away.
- South Kensington|200 m away
- Gloucester Road|700 m away
- Knightsbridge|1.0 km away
- Sloane Square|1.1 km away
