173, Blackfen Road, Sidcup occupies a 319 m² plot as recorded by HM Land Registry.

All 14 other houses in this postcode have recorded plot sizes, and this one ranks as the 13th largest.

173, Blackfen Road, Sidcup has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 17 Jun 2014.

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

173, Blackfen Road, Sidcup last changed hands on 30th January 2007, selling for £250,000. 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 113.2% since January 2007.

• Sold Jan 2007£250,000
• Sold Oct 2000£150,000

Land Registry records and our Estate Agent network show 157 sales of comparable properties within 480 metres of 173, Blackfen Road, Sidcup since 2020.

Most recently, 36, Ronaldstone Road, Sidcup, DA15 8QU, a freehold house, sold at £560,000 on the 30th September 2025.

Read more about house prices in DA15.

• Sold Sep 2025£560,000 | 4 Bed House36, Ronaldstone Road, Sidcup, DA15 8QU36, Ronaldstone Road, Sidcup, DA15 8QU
• Sold Jul 2025£625,000 | 4 Bed House61, Lime Grove, Sidcup, DA15 8PH61, Lime Grove, Sidcup, DA15 8PH
• Sold Feb 2025£470,000 | 3 Bed House179, Blackfen Road, Sidcup, DA15 8PY179, Blackfen Road, Sidcup, DA15 8PY
• Sold Jan 2025£440,000 | 4 Bed House782, East Rochester Way, Sidcup, DA15 8PF782, East Rochester Way, Sidcup, DA15 8PF
• Sold Jul 2024£500,000 | 4 Bed House6, Sycamore Avenue, Sidcup, DA15 8PL6, Sycamore Avenue, Sidcup, DA15 8PL
• Sold May 2024£450,000 | 4 Bed House32, Fairfield Close, Sidcup, DA15 8QS32, Fairfield Close, Sidcup, DA15 8QS
• Sold May 2024£510,000 | 4 Bed House34, Ronaldstone Road, Sidcup, DA15 8QU34, Ronaldstone Road, Sidcup, DA15 8QU
• Sold Mar 2024£605,000 | 4 Bed House20, Fairfield Close, Sidcup, DA15 8QS20, Fairfield Close, Sidcup, DA15 8QS
• Sold Jul 2023£515,000 | 4 Bed House42, Sycamore Avenue, Sidcup, DA15 8PL42, Sycamore Avenue, Sidcup, DA15 8PL
• Sold Oct 2022£600,000 | 4 Bed House92B, Blackfen Road, Sidcup, DA15 8SW92B, Blackfen Road, Sidcup, DA15 8SW
• Sold Mar 2022£525,000 | 4 Bed House1, Curran Avenue, Sidcup, DA15 8RP1, Curran Avenue, Sidcup, DA15 8RP
• Sold Jan 2022£530,000 | 4 Bed House157, Sutherland Avenue, Welling, DA16 2NN157, Sutherland Avenue, Welling, DA16 2NN
• Sold Jul 2021£495,000 | 3 Bed House11, Burleigh Avenue, Sidcup, DA15 8QA11, Burleigh Avenue, Sidcup, DA15 8QA
• Sold Jun 2021£525,000 | 4 Bed House6, Fen Grove, Sidcup, DA15 8QN6, Fen Grove, Sidcup, DA15 8QN
• Sold Jun 2021£440,000 | 4 Bed House1, Leechcroft Avenue, Sidcup, DA15 8RR1, Leechcroft Avenue, Sidcup, DA15 8RR
• Sold May 2021£550,000 | 4 Bed House54, Fen Grove, Sidcup, DA15 8QN54, Fen Grove, Sidcup, DA15 8QN
• Sold Dec 2020£500,000 | 4 Bed House27, Queenswood Road, Sidcup, DA15 8QP27, Queenswood Road, Sidcup, DA15 8QP
• Sold Aug 2020£435,000 | 4 Bed House14, Fen Grove, Sidcup, DA15 8QN14, Fen Grove, Sidcup, DA15 8QN
• Sold Aug 2020£420,000 | 4 Bed House16, Leechcroft Avenue, Sidcup, DA15 8RS16, Leechcroft Avenue, Sidcup, DA15 8RS
• Sold Jul 2020£595,000 | 4 Bed House9, Sycamore Avenue, Sidcup, DA15 8PL9, Sycamore Avenue, Sidcup, DA15 8PL

Our analysis of the public data ranks 173, Blackfen Road, Sidcup as the 70th largest and the 70th most expensive of the 427 addresses on Blackfen Road, Sidcup, DA15.

Against the DA15 postcode district average, it is £50k more expensive than the typical property.

• Days Lane Primary School

  500 m away
• Our Lady of the Rosary Catholic Primary School

  600 m away
• Alderwood Primary School

  800 m away

• Bexley Grammar School

  900 m away
• Harris Academy Falconwood

  900 m away
• Blackfen School for Girls

  1.1 km away

• Welling

  |

  1.5 km away
• Falconwood

  |

  1.5 km away
• Sidcup

  |

  1.9 km away

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