21 Onslow GardensHouse Prices / London, Kensington and Chelsea, Onslow Gardens, SW7 3AL
Key Building Insights
21 Onslow Gardens is a residential building situated on Onslow Gardens, London, SW7 with 12 addresses.
It ranks as the 1033rd largest and 1077th most expensive of the 1,225 buildings in the SW7 area. The dominant property type is a period flat built between 1800 and 1911.
The building contains a total of 12 properties: 12 flats.
- Flats
Key Building Insights
21 Onslow Gardens is a residential building situated on Onslow Gardens, London, SW7 with 12 addresses.
It ranks as the 1033rd largest and 1077th most expensive of the 1,225 buildings in the SW7 area. The dominant property type is a period flat built between 1800 and 1911.
The building contains a total of 12 properties: 12 flats.
- Flats
House Pricesin 21 Onslow Gardens
Sale prices range from £1,013,607 for 2 bedroom leasehold flats (692 ft2) to £4,110,912 for 3 bedroom leasehold flats (1,872 ft2) .
Monthly rental prices range from £3,606 pcm for 2 bed flats to £10,727 pcm for 3 bed flats.
The gross rental yield is between 3.1% and 4.7%.
The average value per square foot is £2,178.
Sales Market Trendsin 21 Onslow Gardens
The last sale in 21 Onslow Gardens sold for £3,700,000 on 13th February 2026. Since then prices are up an average of 1.7%.
The current average value in the building is £2,355,395.
The 21 Onslow Gardens Sales Market has decreased by 17.8% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| May 2026 | 0% | £2,355,395 |
| May 2025 | -4.4% | £2,354,453 |
| May 2024 | -2.8% | £2,461,813 |
| May 2023 | -3.4% | £2,533,486 |
| May 2022 | 5.7% | £2,623,058 |
| May 2021 | -3.7% | £2,482,447 |
| May 2020 | 3.5% | £2,577,163 |
| May 2019 | -1.6% | £2,489,343 |
| May 2018 | -2.8% | £2,530,842 |
| May 2017 | -9.1% | £2,603,723 |
| May 2016 | -2.5% | £2,865,485 |
| May 2015 | 0.4% | £2,940,028 |
| May 2014 | 16.8% | £2,929,617 |
| May 2013 | 4.5% | £2,508,803 |
| May 2012 | 14.9% | £2,401,299 |
| May 2011 | 13.4% | £2,089,790 |
| May 2010 | 16.1% | £1,842,361 |
| May 2009 | -8.4% | £1,587,048 |
| May 2008 | 16.1% | £1,732,349 |
| May 2007 | 0% | £1,492,501 |
Rental Market Trendsin 21 Onslow Gardens
The current average rental value in the building is £6,512.
The 21 Onslow Gardens Rental Market has increased by 34.0% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| May 2026 | 4.9% | £6,512pcm |
| May 2025 | 4% | £6,207pcm |
| May 2024 | 0.8% | £5,969pcm |
| May 2023 | 13.5% | £5,922pcm |
| May 2022 | 25.8% | £5,217pcm |
| May 2021 | -9.8% | £4,149pcm |
| May 2020 | -4.1% | £4,597pcm |
| May 2019 | 3.4% | £4,794pcm |
| May 2018 | 1.8% | £4,638pcm |
| May 2017 | -6.2% | £4,557pcm |
| May 2016 | -2.9% | £4,859pcm |
| May 2015 | 0.5% | £5,002pcm |
| May 2014 | 0.9% | £4,979pcm |
| May 2013 | 0.6% | £4,937pcm |
| May 2012 | 2.5% | £4,907pcm |
| May 2011 | 11.6% | £4,788pcm |
| May 2010 | 13.9% | £4,290pcm |
| May 2009 | -14.2% | £3,765pcm |
| May 2008 | 8.4% | £4,387pcm |
| May 2007 | 0% | £4,046pcm |
Explore Propertiesin 21, Onslow Gardens, London, SW7 3AL
- Flat 1, 21, Onslow Gardens, London, SW7 3AL
- Flat 2, 21, Onslow Gardens, London, SW7 3AL3 bed period flat
- Flat 3, 21, Onslow Gardens, London, SW7 3AL2 bed period flat
- Flat 4, 21, Onslow Gardens, London, SW7 3AL3 bed period flat
- Flat 5, 21, Onslow Gardens, London, SW7 3AL3 bed period flat
- Flat 6, 21, Onslow Gardens, London, SW7 3AL3 bed period flat
- Flat 7, 21, Onslow Gardens, London, SW7 3AL3 bed period flat
- Flat 8, 21, Onslow Gardens, London, SW7 3AL2 bed period flat
- Flat 9, 21, Onslow Gardens, London, SW7 3AL2 bed period flat
- Flat 10, 21, Onslow Gardens, London, SW7 3AL
- Flat 11, 21, Onslow Gardens, London, SW7 3AL2 bed period flat
- Flat 12, 21, Onslow Gardens, London, SW7 3AL2 bed period flat
Sales Historyin 21, Onslow Gardens, London, SW7 3AL
The last sale was on 13th February 2026 for £3,700,000 and since then the market in the area has increased by 1.7%. The building has had a total of 15 sales since 1995.
21, Onslow Gardens, London, SW7 3AL has seen 2 sales in the last three years and 1 sale in the last twelve months.
Property Typesin 21 Onslow Gardens
- 10 period flats built between 1800 and 1911
- 2 other addresses of unknown type
- period flat (10)
- Unknown (2)
Energy Efficiencyof properties in 21 Onslow Gardens
- Energy Performance Certificate (EPC) surveys conducted for 10 properties.
- The dominant rating is C.
- A (0)
- E (1)
- B (0)
- F (0)
- C (5)
- G (0)
- D (4)
- No EPC (2)
Top 3 Most Expensive Saleson Onslow Gardens, London, SW7
Schools Nearby
- 300mOur Lady of Victories RC Primary School
- 500mOratory Roman Catholic Primary School
- 600mBousfield Primary School
- 1.1kmSt. Thomas More Language College
- 1.5kmChelsea Academy
- 1.5kmThe London Oratory School
More reading links
Public Transport Nearby
The closest station to 21, Onslow Gardens, London, SW7 3AL is South Kensington station, which is 400 metres away.
- 400mSouth Kensington
- 500mGloucester Road
- 1.1kmEarl's Court
- 1.3kmWest Brompton
