Over the past 30 years, there have been 42 property sales recorded in the NP12 1JG postcode area. The highest sale price reached £190,000, while the most recent sale was a property sold in May 2025 for £42,500.

The estimated average property value in NP12 1JG currently stands at £186,310, which is approximately 30.1% 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 £2,262.

Property prices in NP12 1JG have risen by 13.2% over the past year , with a total increase of 52.5% over the past five years, and a long-term rise of 92.7% over the past decade.

The most common type of property sold in the area is semi-detached, making up around 93% of transactions , followed by other and terraced.

Housing in NP12 1JG is predominantly owner-occupied, with an estimated 78% of homes being lived in by the owners.

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Property Sales

1 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 5bed
📐 850 sq ft
Today
£176,752
streetscan.co.uk estimate
3 Jul 2017
£109,000
20 Aug 2004
£117,950
More details

14 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 5bed
📐 1049 sq ft
Today
£184,746
streetscan.co.uk estimate
14 Aug 2013
£98,000
15 Oct 2012
£66,000
More details

16 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

Today
£76,335
streetscan.co.uk estimate
16 May 2008
£45,000
15 Sep 1995
£31,500

17 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 4bed
📐 888 sq ft
Today
£191,490
streetscan.co.uk estimate
12 Dec 2014
£107,500
7 Apr 2006
£114,000
View +3 more
More details

19 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 6bed
📐 1200 sq ft
Today
£224,417
streetscan.co.uk estimate
15 Apr 2005
£110,000
1 Aug 2001
£53,000
View +1 more
More details

21 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 5bed
📐 861 sq ft
Today
£199,673
streetscan.co.uk estimate
10 Aug 2018
£128,000
13 Jan 2006
£119,000
More details

22 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 4bed
📐 829 sq ft
Today
£203,109
streetscan.co.uk estimate
28 Jun 2024
£187,500
31 Oct 2018
£133,000
View +2 more
More details

23 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 5bed
📐 872 sq ft
Today
£218,919
streetscan.co.uk estimate
4 Apr 2014
£119,000
19 May 2006
£120,000
More details

24 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 4bed
📐 775 sq ft
Today
£185,689
streetscan.co.uk estimate
31 Jan 2020
£130,000
6 Feb 2004
£83,500
More details

25 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 5bed
📐 936 sq ft
Today
£152,429
streetscan.co.uk estimate
31 Aug 2023
£140,000
More details

26 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 4bed
📐 904 sq ft
Today
£244,638
streetscan.co.uk estimate
10 Jan 2014
£130,000
13 Nov 2007
£122,000
More details

27 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

Today
£209,803
streetscan.co.uk estimate
5 Nov 2004
£105,000

3 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 4bed
📐 893 sq ft
Today
£201,707
streetscan.co.uk estimate
17 Apr 2020
£138,000
30 Nov 2018
£129,000
View +5 more
More details

35 Lewis Lewis Avenue, Blackwood, Islwyn, Gwent, NP12 1JG

Today
£248,120
streetscan.co.uk estimate
21 Apr 1995
£43,950

7 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 4bed
📐 904 sq ft
Today
£129,770
streetscan.co.uk estimate
18 Sep 2012
£67,500
More details

8 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 5bed
📐 883 sq ft
Today
£205,817
streetscan.co.uk estimate
10 Jun 2024
£190,000
7 Dec 2018
£83,000
More details

9 Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

🏠 Semi-detached
🛏️ 6bed
📐 883 sq ft
Today
£151,228
streetscan.co.uk estimate
31 Oct 2001
£36,000
More details

Blackwood Atc Lewis Lewis Avenue, Blackwood, Caerphilly, NP12 1JG

Today
£43,414
streetscan.co.uk estimate
12 May 2025
£42,500
22 Aug 2024
£25,000

Area Insights

Data Sources

Properties at NP12 1JG appear fourty-two times in the Land Registry records, with the latest transaction recorded on 12 May 2025. It also has fourteen Energy Performance Certificates (EPC) entries, the earliest dating back to 9 May 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.