According to data from HM Land Registry, 9, Thorndon Close, Orpington sits on a plot of 281 m².

We have plot size data on 25 out of 26 other houses in the postcode and 9, Thorndon Close, Orpington sits on the 10th largest plot.

9, Thorndon Close, Orpington has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 23 Jun 2025.

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

According to HM Land Registry, 9, Thorndon Close, Orpington was last sold on 30th January 2026 for £430,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since January 2026, the market for similar properties has risen by 13.3%.

• Sold Jan 2026£430,000

According to the Land Registry and our network of Estate Agents, there have been 181 sales of properties similar to 9, Thorndon Close, Orpington within a radius of 810 metres since 2019.

The most recent example is 26, Beddington Road, Orpington, BR5 2TG, a freehold house which sold for £400,000 on the 30th April 2026.

Read more about house prices in BR5.

• Sold Apr 2026£400,000 | 3 Bed House26, Beddington Road, Orpington, BR5 2TG26, Beddington Road, Orpington, BR5 2TG
• Sold Mar 2026£450,000 | 3 Bed House12, Thorndon Close, Orpington, BR5 2SJ12, Thorndon Close, Orpington, BR5 2SJ
• Sold Mar 2026£410,000 | 3 Bed House47, Leesons Way, Orpington, BR5 2QB47, Leesons Way, Orpington, BR5 2QB
• Sold Sep 2024£395,000 | 3 Bed House19, Thorndon Close, Orpington, BR5 2SH19, Thorndon Close, Orpington, BR5 2SH
• Sold Sep 2024£410,000 | 3 Bed House12, Mickleham Road, Orpington, BR5 2RL12, Mickleham Road, Orpington, BR5 2RL
• Sold Aug 2024£360,000 | 3 Bed House32, Thorndon Close, Orpington, BR5 2SJ32, Thorndon Close, Orpington, BR5 2SJ
• Sold May 2024£405,000 | 3 Bed House13, Giggs Hill, Orpington, BR5 2SA13, Giggs Hill, Orpington, BR5 2SA
• Sold Apr 2024£370,000 | 3 Bed House14, Thorndon Close, Orpington, BR5 2SJ14, Thorndon Close, Orpington, BR5 2SJ
• Sold Jan 2024£355,000 | 3 Bed House22, Brenchley Road, Orpington, BR5 2TD22, Brenchley Road, Orpington, BR5 2TD
• Sold Dec 2023£300,000 | 3 Bed House16, Thorndon Road, Orpington, BR5 2SL16, Thorndon Road, Orpington, BR5 2SL
• Sold Nov 2023£370,000 | 3 Bed House6, Beddington Green, Orpington, BR5 2TQ6, Beddington Green, Orpington, BR5 2TQ
• Sold Aug 2023£420,000 | 3 Bed House49, Leesons Way, Orpington, BR5 2QB49, Leesons Way, Orpington, BR5 2QB
• Sold Aug 2023£370,000 | 3 Bed House24, Thorndon Close, Orpington, BR5 2SJ24, Thorndon Close, Orpington, BR5 2SJ
• Sold Jul 2023£405,000 | 3 Bed House82, Beddington Road, Orpington, BR5 2TE82, Beddington Road, Orpington, BR5 2TE
• Sold Feb 2023£320,000 | 3 Bed House29, Thorndon Close, Orpington, BR5 2SH29, Thorndon Close, Orpington, BR5 2SH
• Sold Dec 2022£325,000 | 3 Bed House20, Thorndon Road, Orpington, BR5 2SL20, Thorndon Road, Orpington, BR5 2SL
• Sold Dec 2022£390,000 | 3 Bed House10, Thorndon Road, Orpington, BR5 2SL10, Thorndon Road, Orpington, BR5 2SL
• Sold Sep 2021£348,000 | 3 Bed House20, Thorndon Close, Orpington, BR5 2SJ20, Thorndon Close, Orpington, BR5 2SJ
• Sold Sep 2020£315,000 | 3 Bed House2, Mickleham Road, Orpington, BR5 2RL2, Mickleham Road, Orpington, BR5 2RL
• Sold Dec 2019£295,000 | 3 Bed House16, Mickleham Road, Orpington, BR5 2RL16, Mickleham Road, Orpington, BR5 2RL

Thorndon Close, Orpington, BR5 has a total of 47 addresses. According to our analysis of all the public data, 9, Thorndon Close, Orpington is the 37th largest and the 25th most expensive property on the street.

When compared to the postcode district it is £85k less expensive than the average property in BR5.

• St Peter and St Paul Catholic Primary School

  500 m away
• Midfield Primary School

  700 m away
• Leesons Primary School

  1.1 km away

• Kemnal Technology College

  1.3 km away
• Chislehurst School for Girls

  1.5 km away
• Orion Coopers

  1.5 km away

• St Mary Cray

  |

  1.5 km away
• Petts Wood

  |

  2.4 km away
• Chislehurst

  |

  2.6 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.