20, Onslow Gardens occupies a 305 m² plot as recorded by HM Land Registry.

Of the 22 other houses in this postcode, 21 have recorded plot sizes, and this one ranks as the 13th largest.

20, Onslow Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Jun 2012.

The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

20, Onslow Gardens last changed hands on 2nd August 2019, selling for £680,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 3.7% since August 2019.

• Sold Aug 2019£680,000
• Sold Nov 2012£460,000

Land Registry records and our Estate Agent network show 151 sales of comparable properties within 520 metres of 20, Onslow Gardens since 2017.

Most recently, 69, Cadogan Gardens, London, E18 1LY, a freehold house, sold at £810,000 on the 4th February 2026.

Read more about house prices in E18.

• Sold Feb 2026£810,000 | 3 Bed House69, Cadogan Gardens, London, E18 1LY69, Cadogan Gardens, London, E18 1LY
• Sold Nov 2025£922,500 | 4 Bed House106, Cadogan Gardens, London, E18 1LZ106, Cadogan Gardens, London, E18 1LZ
• Sold Oct 2025£290,000 | 3 Bed House29, Cadogan Gardens, London, E18 1LT29, Cadogan Gardens, London, E18 1LT
• Sold Aug 2025£815,000 | 3 Bed House34, Onslow Gardens, London, E18 1NE34, Onslow Gardens, London, E18 1NE
• Sold May 2025£745,000 | 3 Bed House62, Ashbourne Avenue, London, E18 1PL62, Ashbourne Avenue, London, E18 1PL
• Sold Feb 2025£900,000 | 4 Bed House38, Ashbourne Avenue, London, E18 1PL38, Ashbourne Avenue, London, E18 1PL
• Sold Jun 2024£767,075 | 3 Bed House93, Cadogan Gardens, London, E18 1LY93, Cadogan Gardens, London, E18 1LY
• Sold Apr 2024£747,500 | 3 Bed House64, Onslow Gardens, London, E18 1NB64, Onslow Gardens, London, E18 1NB
• Sold Oct 2023£660,000 | 3 Bed House2, Cowslip Road, London, E18 1JW2, Cowslip Road, London, E18 1JW
• Sold Apr 2023£850,000 | 3 Bed House38, Cadogan Gardens, London, E18 1LU38, Cadogan Gardens, London, E18 1LU
• Sold Oct 2022£965,000 | 4 Bed House31, Cadogan Gardens, London, E18 1LT31, Cadogan Gardens, London, E18 1LT
• Sold Jun 2022£775,000 | 4 Bed House43, Cadogan Gardens, London, E18 1LT43, Cadogan Gardens, London, E18 1LT
• Sold Feb 2022£860,000 | 4 Bed House81, Cadogan Gardens, London, E18 1LY81, Cadogan Gardens, London, E18 1LY
• Sold Nov 2021£746,000 | 3 Bed House40, Onslow Gardens, London, E18 1NE40, Onslow Gardens, London, E18 1NE
• Sold Oct 2021£880,000 | 4 Bed House54, South View Drive, London, E18 1NS54, South View Drive, London, E18 1NS
• Sold Aug 2021£835,000 | 4 Bed House11, Cadogan Gardens, London, E18 1LT11, Cadogan Gardens, London, E18 1LT
• Sold Jun 2021£860,000 | 3 Bed House8, Sherwood Avenue, London, E18 1PB8, Sherwood Avenue, London, E18 1PB
• Sold Oct 2018£750,000 | 3 Bed House35, Onslow Gardens, London, E18 1ND35, Onslow Gardens, London, E18 1ND
• Sold Jul 2018£710,000 | 4 Bed House71, Cadogan Gardens, London, E18 1LY71, Cadogan Gardens, London, E18 1LY
• Sold Dec 2017£690,000 | 3 Bed House6, Onslow Gardens, London, E18 1NE6, Onslow Gardens, London, E18 1NE

Our analysis of the public data ranks 20, Onslow Gardens as the 41st largest and the 31st most expensive of the 147 addresses on Onslow Gardens, London, E18.

Against the E18 postcode district average, it is £231k more expensive than the typical property.

• Oakdale Junior School

  300 m away
• Oakdale Infants' School

  400 m away
• Nightingale Primary School

  500 m away

• Woodbridge High School

  1.3 km away
• Beal High School

  1.3 km away
• Wanstead High School

  1.5 km away

• South Woodford

  |

  500 m away
• Snaresbrook

  |

  1.3 km away
• Wanstead

  |

  1.6 km away

Environment Agency data suggests this area has a Very Low risk of flooding.