Over the past 28 years, there have been 17 property sales recorded in the NP12 0QN postcode area. The highest sale price reached £400,000, while the most recent sale was for a terraced house sold in September 2025 for £220,000.

The estimated average property value in NP12 0QN currently stands at £185,081, which is approximately 25.3% 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 £1,590.

Property prices in NP12 0QN have risen by 7.4% over the past year , with a total increase of 39.7% over the past five years , and a long-term rise of 74.5% over the past decade .

The most common type of property sold in the area is semi-detached, making up around 94% of transactions , followed by other.

Housing in NP12 0QN is predominantly owner-occupied, with an estimated 85% of homes being lived in by the owners.

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Property Sales

11 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 5bed
📐 1084 sq ft
Today
£194,381
streetscan.co.uk estimate
25 Oct 2018
£129,950
16 Jul 2010
£100,000
View +1 more
More details

14 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

Today
£180,759
streetscan.co.uk estimate
14 Jul 2000
£40,000

18 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 5bed
📐 947 sq ft
Today
£104,125
streetscan.co.uk estimate
25 Jan 2019
£70,000
More details

2 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 4bed
📐 1033 sq ft
Today
£221,281
streetscan.co.uk estimate
18 Mar 2020
£150,000
18 Aug 2006
£110,000
More details

23 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

Today
£169,462
streetscan.co.uk estimate
8 Aug 2007
£100,000

24 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 5bed
📐 1012 sq ft
Today
£169,615
streetscan.co.uk estimate
21 Apr 2004
£70,000
More details

27 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 5bed
📐 1012 sq ft
Today
£227,652
streetscan.co.uk estimate
19 Sep 2025
£220,000
10 Nov 2023
£190,000
More details

33 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

Today
£249,650
streetscan.co.uk estimate
10 Jan 2004
£100,000

34 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

Today
£220,924
streetscan.co.uk estimate
5 May 1998
£46,000

40 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 5bed
📐 1421 sq ft
Today
£134,075
streetscan.co.uk estimate
18 May 2018
£84,000
More details

6 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

🏠 Semi-detached
🛏️ 5bed
📐 947 sq ft
Today
£73,351
streetscan.co.uk estimate
31 Mar 2003
£22,875
More details

8 James Street, Markham, Blackwood, Caerphilly, NP12 0QN

Today
£63,930
streetscan.co.uk estimate
13 Oct 2003
£23,220

Highcrest Garage James Street, Markham, Blackwood, Caerphilly, NP12 0QN

Today
£425,486
streetscan.co.uk estimate
27 May 2022
£400,000

Area Insights

Data Sources

Properties at NP12 0QN appear seventeen times in the Land Registry records, with the latest transaction recorded on 19 Sep 2025. It also has seven Energy Performance Certificates (EPC) entries, the earliest dating back to 18 Nov 2009. 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.