21, Knoll Rise, Orpington occupies a 565 m² plot as recorded by HM Land Registry.

Of the 26 other houses in this postcode, 25 have recorded plot sizes, and this one ranks as the 10th largest.

21, Knoll Rise, Orpington has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 15 Oct 2018.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

21, Knoll Rise, Orpington last changed hands on 7th June 2019, selling for £647,500. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has risen by 0.9% since June 2019.

• Sold Jun 2019£647,500

Land Registry records and our Estate Agent network show 125 sales of comparable properties within 600 metres of 21, Knoll Rise, Orpington since 2011.

Most recently, 12, Irene Road, Orpington, BR6 0HA, a freehold house, sold at £975,000 on the 7th November 2025.

Read more about house prices in BR6.

• Sold Nov 2025£975,000 | 4 Bed House12, Irene Road, Orpington, BR6 0HA12, Irene Road, Orpington, BR6 0HA
• Sold Mar 2025£700,000 | 3 Bed House38, Elm Grove, Orpington, BR6 0AB38, Elm Grove, Orpington, BR6 0AB
• Sold Mar 2025£912,000 | 4 Bed House16, Oatfield Road, Orpington, BR6 0ER16, Oatfield Road, Orpington, BR6 0ER
• Sold Mar 2025£885,000 | 4 Bed House21, Crofton Road, Orpington, BR6 8AE21, Crofton Road, Orpington, BR6 8AE
• Sold Sep 2024£715,000 | 4 Bed House10, Oakhill Road, Orpington, BR6 0AE10, Oakhill Road, Orpington, BR6 0AE
• Sold Aug 2024£900,000 | 4 Bed House57, Broxbourne Road, Orpington, BR6 0BB57, Broxbourne Road, Orpington, BR6 0BB
• Sold Jun 2024£801,500 | 4 Bed House11, Crofton Road, Orpington, BR6 8AE11, Crofton Road, Orpington, BR6 8AE
• Sold May 2024£765,000 | 4 Bed House72, Elm Grove, Orpington, BR6 0AD72, Elm Grove, Orpington, BR6 0AD
• Sold Jan 2024£835,000 | 4 Bed House76, Elm Grove, Orpington, BR6 0AD76, Elm Grove, Orpington, BR6 0AD
• Sold Sep 2023£700,000 | 4 Bed House88, Elm Grove, Orpington, BR6 0AD88, Elm Grove, Orpington, BR6 0AD
• Sold Apr 2022£741,000 | 3 Bed House60, Elm Grove, Orpington, BR6 0AD60, Elm Grove, Orpington, BR6 0AD
• Sold Apr 2022£883,000 | 3 Bed House24, Elm Grove, Orpington, BR6 0AB24, Elm Grove, Orpington, BR6 0AB
• Sold Dec 2021£640,000 | 4 Bed House36, Hillview Road, Orpington, BR6 0SF36, Hillview Road, Orpington, BR6 0SF
• Sold Mar 2021£800,000 | 4 Bed House25, Elm Grove, Orpington, BR6 0AA25, Elm Grove, Orpington, BR6 0AA
• Sold Feb 2021£675,000 | 3 Bed House22, Elm Grove, Orpington, BR6 0AB22, Elm Grove, Orpington, BR6 0AB
• Sold May 2018£695,000 | 3 Bed House54, Elm Grove, Orpington, BR6 0AD54, Elm Grove, Orpington, BR6 0AD
• Sold Mar 2018£645,500 | 4 Bed House6, Oakhill Road, Orpington, BR6 0AE6, Oakhill Road, Orpington, BR6 0AE
• Sold Jun 2016£617,000 | 4 Bed House29, Elm Grove, Orpington, BR6 0AA29, Elm Grove, Orpington, BR6 0AA
• Sold Nov 2015£570,000 | 4 Bed House48, Elm Grove, Orpington, BR6 0AD48, Elm Grove, Orpington, BR6 0AD
• Sold Sep 2011£433,000 | 4 Bed House66, Elm Grove, Orpington, BR6 0AD66, Elm Grove, Orpington, BR6 0AD

Our analysis of the public data ranks 21, Knoll Rise, Orpington as the 33rd largest and the 25th most expensive of the 166 addresses on Knoll Rise, Orpington, BR6.

Against the BR6 postcode district average, it is £177k more expensive than the typical property.

• Perry Hall Primary School

  900 m away
• Holy Innocents Catholic Primary School

  1.1 km away
• Crofton Infant School

  1.2 km away

• St Olave's and St Saviour's Grammar School

  1.2 km away
• Harris Academy Orpington

  1.5 km away
• Newstead Wood School

  1.7 km away

• Orpington

  |

  400 m away
• Petts Wood

  |

  2.0 km away
• St Mary Cray

  |

  2.3 km away

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