Over the past 30 years, there have been 58 property sales recorded in the DA15 9NN postcode area. The highest sale price reached £470,000, while the most recent sale was for a semi-detached flat sold in April 2025 for £230,000.

The estimated average property value in DA15 9NN currently stands at £426,132, which is approximately 15.1% lower than the city average - making it a relatively affordable option for buyers.

In terms of size, the average price per square metre is approximately £5,426.

Property prices in DA15 9NN have risen by 2.2% over the past year , with a total increase of 20.2% over the past five years, and a long-term rise of 55.3% over the past decade.

The most common type of property sold in the area is flat, making up around 64% of transactions , followed by detached and semi-detached.

Housing in DA15 9NN is predominantly owner-occupied, with an estimated 75% of homes being lived in by the owners.

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Property Sales

403 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Semi-detached
🛏️ 4bed
📐 1281 sq ft
Today
£725,577
streetscan.co.uk estimate
15 Nov 2002
£265,000
24 Oct 2001
£160,000
More details

405A Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

Today
£472,511
streetscan.co.uk estimate
21 Jul 2006
£215,000
30 May 1997
£52,000

405B Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Terraced
🛏️ 5bed
📐 1109 sq ft
Today
£491,426
streetscan.co.uk estimate
22 May 1998
£93,000
More details

407 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

Today
£363,067
streetscan.co.uk estimate
27 Aug 2003
£155,000

409A Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Detached
🛏️ bed
📐 1313 sq ft
Today
£484,733
streetscan.co.uk estimate
27 Jul 2020
£420,000
More details

411 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Detached
🛏️ 5bed
📐 926 sq ft
Today
£575,801
streetscan.co.uk estimate
11 Jul 2016
£465,000
29 Jul 2013
£280,000
More details

415 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Semi-detached
🛏️ 7bed
📐 1550 sq ft
Today
£623,382
streetscan.co.uk estimate
7 Nov 2014
£392,500
14 Nov 1997
£95,000
More details

417 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Detached
🛏️ 7bed
📐 2228 sq ft
Today
£601,084
streetscan.co.uk estimate
23 Dec 2008
£280,000
7 Jul 1999
£90,000
View +1 more
More details

419 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Detached
🛏️ 7bed
📐 960 sq ft
Today
£553,181
streetscan.co.uk estimate
6 Mar 2019
£470,000
8 Apr 2013
£275,000
More details

421 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Detached
🛏️ 7bed
📐 2174 sq ft
Today
£980,927
streetscan.co.uk estimate
4 Apr 2006
£442,500
23 Oct 1998
£75,000
More details

Flat 1, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Flat
🛏️ 2bed
📐 388 sq ft
Today
£217,991
streetscan.co.uk estimate
16 Sep 2022
£222,500
3 Jan 2017
£230,500
View +4 more
More details

Flat 2, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

Today
£255,109
streetscan.co.uk estimate
15 Jan 2007
£148,000
7 Mar 2003
£113,000
27 Mar 1998
£55,995
24 Jan 1997
£43,500

Flat 3, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Flat
🛏️ 2bed
📐 388 sq ft
Today
£227,351
streetscan.co.uk estimate
21 Apr 2022
£225,000
19 Mar 2021
£180,000
View +3 more
More details

Flat 4, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Flat
🛏️ 2bed
📐 388 sq ft
Today
£232,403
streetscan.co.uk estimate
22 Apr 2022
£230,000
29 Aug 2014
£165,000
View +4 more
More details

Flat 5, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Flat
🛏️ 2bed
📐 484 sq ft
Today
£264,979
streetscan.co.uk estimate
9 Sep 2016
£231,000
23 Apr 2015
£165,000
View +5 more
More details

Flat 6, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Flat
🛏️ 2bed
📐 398 sq ft
Today
£230,000
streetscan.co.uk estimate
25 Apr 2025
£230,000
26 May 2015
£154,000
View +3 more
More details

Flat 7, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

Today
£208,668
streetscan.co.uk estimate
24 Jun 1997
£41,000
12 Jan 1996
£37,500

Flat 8, 423 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Flat
🛏️ 2bed
📐 452 sq ft
Today
£220,544
streetscan.co.uk estimate
30 Jul 1999
£52,000
12 Apr 1996
£37,500
More details

425 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Semi-detached
🛏️ 5bed
📐 747 sq ft
Today
£237,665
streetscan.co.uk estimate
25 Feb 2008
£122,500
More details

429 Blackfen Road, Sidcup, Bexley, Greater London, DA15 9NN

🏠 Detached
🛏️ 4bed
📐 743 sq ft
Today
£468,842
streetscan.co.uk estimate
17 May 2021
£422,500
17 Dec 2009
£230,000
More details

Area Insights

Data Sources

Properties at DA15 9NN appear fifty-eight times in the Land Registry records, with the latest transaction recorded on 25 Apr 2025. It also has sixteen Energy Performance Certificates (EPC) entries, the earliest dating back to 13 Aug 2018. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.

Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.