429, Blackfen Road, Sidcup occupies a 417 m² plot as recorded by HM Land Registry.

Of the 17 other houses in this postcode, 16 have recorded plot sizes, and this one ranks as the 7th largest.

429, Blackfen Road, Sidcup has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 17 Mar 2026.

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

429, Blackfen Road, Sidcup last changed hands on 17th May 2021, selling for £422,500. 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 19.2% since May 2021.

• Sold May 2021£422,500
• Sold Dec 2009£230,000

Land Registry records and our Estate Agent network show 295 sales of comparable properties within 600 metres of 429, Blackfen Road, Sidcup since 2019.

Most recently, 5, Wellan Close, Sidcup, DA15 9PN, a freehold house, sold at £380,000 on the 23rd March 2026.

Read more about house prices in DA15.

• Sold Mar 2026£380,000 | 3 Bed House5, Wellan Close, Sidcup, DA15 9PN5, Wellan Close, Sidcup, DA15 9PN
• Sold Feb 2026£430,000 | 3 Bed House176, Sherwood Park Avenue, Sidcup, DA15 9JL176, Sherwood Park Avenue, Sidcup, DA15 9JL
• Sold Nov 2025£450,000 | 3 Bed House59, Park Mead, Sidcup, DA15 9PJ59, Park Mead, Sidcup, DA15 9PJ
• Sold Sep 2025£480,000 | 3 Bed House12, Lakeside Close, Sidcup, DA15 9PW12, Lakeside Close, Sidcup, DA15 9PW
• Sold Aug 2025£450,000 | 3 Bed House1, Lakeside Close, Sidcup, DA15 9PW1, Lakeside Close, Sidcup, DA15 9PW
• Sold May 2025£425,000 | 3 Bed House47, Park Mead, Sidcup, DA15 9PJ47, Park Mead, Sidcup, DA15 9PJ
• Sold Feb 2025£375,000 | 3 Bed House48, Ramillies Road, Sidcup, DA15 9HY48, Ramillies Road, Sidcup, DA15 9HY
• Sold Jan 2025£375,000 | 3 Bed House212, Sherwood Park Avenue, Sidcup, DA15 9JL212, Sherwood Park Avenue, Sidcup, DA15 9JL
• Sold Dec 2024£420,000 | 3 Bed House33, Lakeside Close, Sidcup, DA15 9PW33, Lakeside Close, Sidcup, DA15 9PW
• Sold Nov 2024£440,000 | 3 Bed House24, Ramillies Road, Sidcup, DA15 9HY24, Ramillies Road, Sidcup, DA15 9HY
• Sold Aug 2024£425,000 | 3 Bed House32, Radnor Avenue, Welling, DA16 2BX32, Radnor Avenue, Welling, DA16 2BX
• Sold Jun 2023£418,000 | 3 Bed House171, Sherwood Park Avenue, Sidcup, DA15 9JG171, Sherwood Park Avenue, Sidcup, DA15 9JG
• Sold Oct 2022£390,500 | 3 Bed House193, Sherwood Park Avenue, Sidcup, DA15 9JG193, Sherwood Park Avenue, Sidcup, DA15 9JG
• Sold Sep 2022£450,000 | 3 Bed House6A, Rochester Close, Sidcup, DA15 9PG6A, Rochester Close, Sidcup, DA15 9PG
• Sold Jul 2022£540,000 | 3 Bed House199, Sherwood Park Avenue, Sidcup, DA15 9JG199, Sherwood Park Avenue, Sidcup, DA15 9JG
• Sold Jul 2022£400,000 | 3 Bed House240A, Sherwood Park Avenue, Sidcup, DA15 9JL240A, Sherwood Park Avenue, Sidcup, DA15 9JL
• Sold Dec 2021£370,000 | 3 Bed House52, Park Mead, Sidcup, DA15 9PJ52, Park Mead, Sidcup, DA15 9PJ
• Sold Oct 2021£388,000 | 3 Bed House45, Park Mead, Sidcup, DA15 9PJ45, Park Mead, Sidcup, DA15 9PJ
• Sold Jan 2020£346,000 | 3 Bed House36, Park Mead, Sidcup, DA15 9PJ36, Park Mead, Sidcup, DA15 9PJ
• Sold Oct 2019£337,500 | 3 Bed House54, Park Mead, Sidcup, DA15 9PJ54, Park Mead, Sidcup, DA15 9PJ

Our analysis of the public data ranks 429, Blackfen Road, Sidcup as the 191st largest and the 208th most expensive of the 427 addresses on Blackfen Road, Sidcup, DA15.

Against the DA15 postcode district average, it is £59k less expensive than the typical property.

• Sherwood Park Primary School

  300 m away
• Danson Primary School

  1.0 km away
• Days Lane Primary School

  1.0 km away

• Blackfen School for Girls

  100 m away
• Bexley Grammar School

  900 m away
• Hurstmere School

  1.2 km away

• Sidcup

  |

  1.8 km away
• Albany Park

  |

  1.8 km away
• Welling

  |

  1.9 km away

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