Over the past 28 years, there have been 18 property sales recorded in the NP12 3LW postcode area. The highest sale price reached £150,000, while the most recent sale was for a semi-detached house sold in July 2025 for £150,000.

The estimated average property value in NP12 3LW currently stands at £173,079, which is approximately 29.9% 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 £2,163.

Property prices in NP12 3LW have risen by 8.1% over the past year , with a total increase of 42% over the past five years, and a long-term rise of 90.8% over the past decade.

The most common type of property sold in the area is semi-detached, making up around 83% of transactions , followed by terraced.

Housing in NP12 3LW is mixed, with 33% of homes being , indicating a diverse residential makeup.

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Property Sales

11 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

Today
£191,306
streetscan.co.uk estimate
29 Sep 2006
£106,500

15 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

Today
£145,272
streetscan.co.uk estimate
27 Nov 1997
£29,000

18 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

🏠 Semi-detached
🛏️ 4bed
📐 813 sq ft
Today
£169,445
streetscan.co.uk estimate
14 Oct 2016
£101,000
3 Dec 2013
£60,000
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More details

2 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

🏠 Semi-detached
🛏️ 5bed
📐 893 sq ft
Today
£129,059
streetscan.co.uk estimate
16 Jun 2017
£78,500
More details

22 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

🏠 Semi-detached
🛏️ 4bed
📐 807 sq ft
Today
£185,969
streetscan.co.uk estimate
25 Jun 2004
£80,000
More details

24 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

Today
£178,974
streetscan.co.uk estimate
3 Aug 2001
£42,500
21 May 1999
£37,000

28 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

🏠 Semi-detached
🛏️ 5bed
📐 861 sq ft
Today
£189,021
streetscan.co.uk estimate
15 Dec 2020
£139,950
31 Mar 2017
£82,000
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36 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

🏠 Semi-detached
🛏️ 4bed
📐 926 sq ft
Today
£152,719
streetscan.co.uk estimate
7 Jul 2025
£150,000
11 Aug 2006
£115,000
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More details

44 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

🏠 Semi-detached
🛏️ 4bed
📐 883 sq ft
Today
£160,270
streetscan.co.uk estimate
17 Feb 2023
£146,000
More details

9 Derwendeg Avenue, Cefn Fforest, Blackwood, Caerphilly, NP12 3LW

Today
£177,809
streetscan.co.uk estimate
11 Dec 1998
£36,995
5 Aug 1998
£35,000

Area Insights

Data Sources

Properties at NP12 3LW appear eighteen times in the Land Registry records, with the latest transaction recorded on 7 Jul 2025. It also has six Energy Performance Certificates (EPC) entries, the earliest dating back to 1 Apr 2017. 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.