Over the past 28 years, there have been 39 property sales recorded in the NP12 1NU postcode area. The highest sale price reached £335,000, while the most recent sale was for a terraced house sold in December 2025 for £185,000.

The estimated average property value in NP12 1NU currently stands at £177,120, which is approximately 28.5% 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 £1,761.

Property prices in NP12 1NU have risen by 8.3% over the past year , with a total increase of 44.1% over the past five years , and a long-term rise of 98.2% over the past decade .

The most common type of property sold in the area is terraced, making up around 79% of transactions , followed by semi-detached and flat.

Housing in NP12 1NU is predominantly owner-occupied, with an estimated 100% of homes being lived in by the owners.

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Property Sales

50 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 4bed
📐 1066 sq ft
Today
£147,798
streetscan.co.uk estimate
12 May 2021
£115,000
15 Jul 1998
£26,000
More details

52 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 5bed
📐 1023 sq ft
Today
£181,105
streetscan.co.uk estimate
14 Feb 2025
£175,000
19 Dec 2008
£60,000
More details

56 William Street, Blackwood, Caerphilly, NP12 1NU

Today
£172,575
streetscan.co.uk estimate
27 Sep 2004
£84,995

59 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 6bed
📐 1055 sq ft
Today
£148,076
streetscan.co.uk estimate
30 Nov 2011
£80,000
More details

60 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 4bed
📐 969 sq ft
Today
£202,825
streetscan.co.uk estimate
2 Jul 2018
£128,000
24 May 2013
£87,000
More details

61 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 5bed
📐 883 sq ft
Today
£164,846
streetscan.co.uk estimate
3 Dec 2025
£165,000
15 Feb 2019
£128,000
View +1 more
More details

62 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 5bed
📐 1023 sq ft
Today
£170,938
streetscan.co.uk estimate
20 Dec 2019
£117,000
1 Jun 2007
£111,000
More details

63 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 5bed
📐 1227 sq ft
Today
£152,066
streetscan.co.uk estimate
5 May 2006
£86,000
More details

64 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 6bed
📐 1335 sq ft
Today
£203,126
streetscan.co.uk estimate
9 Feb 2018
£128,000
11 Jul 2005
£82,000
More details

65 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 4bed
📐 1087 sq ft
Today
£193,665
streetscan.co.uk estimate
19 Sep 2025
£187,500
19 Jan 2024
£174,950
View +3 more
More details

68 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Semi-detached
🛏️ 4bed
📐 1033 sq ft
Today
£162,776
streetscan.co.uk estimate
25 Mar 2021
£122,500
9 Dec 2003
£70,000
View +1 more
More details

69 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 6bed
📐 958 sq ft
Today
£184,827
streetscan.co.uk estimate
19 Dec 2025
£185,000
18 Apr 2019
£135,000
View +1 more
More details

71 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 5bed
📐 1014 sq ft
Today
£212,537
streetscan.co.uk estimate
4 Aug 2015
£120,000
24 Feb 2012
£76,500
More details

74 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 4bed
📐 1012 sq ft
Today
£184,654
streetscan.co.uk estimate
7 Sep 2021
£148,000
5 Mar 2021
£90,000
View +2 more
More details

76 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 7bed
📐 1087 sq ft
Today
£178,000
streetscan.co.uk estimate
19 Feb 2016
£101,000
More details

78 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Terraced
🛏️ 6bed
📐 5134 sq ft
Today
£145,636
streetscan.co.uk estimate
25 Jun 2002
£37,500
More details

82 William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Semi-detached
🛏️ 5bed
📐 1033 sq ft
Today
£202,841
streetscan.co.uk estimate
30 Apr 2025
£187,500
26 Jun 2018
£141,000
View +1 more
More details

2, The Old Court William Street, Blackwood, Caerphilly, NP12 1NU

🏠 Flat
🛏️ 8bed
📐 3035 sq ft
Today
£335,000
streetscan.co.uk estimate
21 Aug 2025
£335,000
More details

Area Insights

Data Sources

Properties at NP12 1NU appear thirty-nine times in the Land Registry records, with the latest transaction recorded on 19 Dec 2025. It also has seventeen Energy Performance Certificates (EPC) entries, the earliest dating back to 3 Oct 2011. 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.