Over the past 26 years, there have been 114 property sales recorded in the NP12 1HB postcode area. The highest sale price reached £284,950, while the most recent sale was for a semi-detached house sold in June 2025 for £230,000.

The estimated average property value in NP12 1HB currently stands at £263,640, which is roughly in line with the city average (within ±8%), suggesting property prices reflect broader market trends.

In terms of size, the average price per square metre is approximately £3,171.

Property prices in NP12 1HB have risen by 7.9% over the past year , with a total increase of 41.6% over the past five years, and a long-term rise of 76.5% over the past decade.

The most common type of property sold in the area is terraced, making up around 53% of transactions , followed by detached and semi-detached.

Housing in NP12 1HB is predominantly owner-occupied, with an estimated 86% of homes being lived in by the owners.

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Property Sales

1 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Detached
🛏️ 6bed
📐 1130 sq ft
Today
£354,162
streetscan.co.uk estimate
26 Jul 2013
£185,000
29 Jun 2001
£105,000
More details

10 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Detached
🛏️ 5bed
📐 958 sq ft
Today
£314,252
streetscan.co.uk estimate
12 Jul 2022
£284,950
26 Apr 2013
£163,000
View +2 more
More details

11 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£298,365
streetscan.co.uk estimate
15 Dec 2000
£67,950

12 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Semi-detached
🛏️ 3bed
📐 517 sq ft
Today
£187,050
streetscan.co.uk estimate
30 Sep 2022
£172,500
24 Aug 2001
£52,000
View +1 more
More details

13 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£239,083
streetscan.co.uk estimate
13 Nov 2003
£93,950
15 Dec 2000
£63,050

14 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Detached
🛏️ 6bed
📐 947 sq ft
Today
£248,253
streetscan.co.uk estimate
28 Sep 2001
£68,500
17 Nov 2000
£64,950
More details

15 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Semi-detached
🛏️ 5bed
📐 821 sq ft
Today
£239,857
streetscan.co.uk estimate
16 Aug 2019
£165,000
25 Oct 2011
£139,950
View +2 more
More details

16 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£245,000
streetscan.co.uk estimate
17 May 2006
£140,000
3 Nov 2000
£65,950

17 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Detached
🛏️ 4bed
📐 624 sq ft
Today
£206,966
streetscan.co.uk estimate
8 Nov 2002
£64,000
27 Oct 2000
£49,950
More details

18 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£197,197
streetscan.co.uk estimate
12 May 2006
£109,950
26 Nov 2004
£100,995
13 Oct 2000
£49,950

19 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£271,015
streetscan.co.uk estimate
6 Aug 2004
£129,995
1 Dec 2000
£65,950

2 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Detached
🛏️ 6bed
📐 1119 sq ft
Today
£357,824
streetscan.co.uk estimate
4 Mar 2016
£207,000
29 Jun 2001
£102,950
More details

20 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 5bed
📐 743 sq ft
Today
£236,029
streetscan.co.uk estimate
20 Jun 2025
£230,000
6 Feb 2019
£145,000
View +3 more
More details

21 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Semi-detached
🛏️ 5bed
📐 965 sq ft
Today
£224,734
streetscan.co.uk estimate
5 Dec 2012
£115,000
28 Feb 2003
£88,950
View +1 more
More details

22 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Semi-detached
🛏️ 5bed
📐 818 sq ft
Today
£244,351
streetscan.co.uk estimate
18 Feb 2022
£210,000
29 Jul 2011
£133,000
View +4 more
More details

23 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£258,667
streetscan.co.uk estimate
25 Jan 2010
£139,000
12 Sep 2003
£94,000
11 Aug 2000
£67,950

24 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 5bed
📐 1001 sq ft
Today
£307,089
streetscan.co.uk estimate
30 Jun 2000
£65,950
More details

25 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 4bed
📐 627 sq ft
Today
£181,974
streetscan.co.uk estimate
3 Feb 2012
£94,000
18 Jun 2004
£89,995
View +2 more
More details

26 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 5bed
📐 811 sq ft
Today
£238,487
streetscan.co.uk estimate
19 Dec 2018
£162,000
31 Mar 2017
£130,000
View +5 more
More details

27 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 5bed
📐 807 sq ft
Today
£226,500
streetscan.co.uk estimate
28 Sep 2015
£133,500
14 Apr 2008
£141,000
View +3 more
More details

28 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 3bed
📐 646 sq ft
Today
£180,993
streetscan.co.uk estimate
22 Dec 2005
£100,000
9 Jun 2000
£49,950
More details

29 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 4bed
📐 657 sq ft
Today
£180,993
streetscan.co.uk estimate
9 Dec 2005
£100,000
6 Dec 2002
£63,000
View +1 more
More details

3 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£338,050
streetscan.co.uk estimate
23 Jun 2017
£211,000
28 Oct 2005
£194,950
14 Mar 2003
£139,000
21 Aug 2001
£109,950

30 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 4bed
📐 570 sq ft
Today
£177,384
streetscan.co.uk estimate
21 Aug 2024
£170,000
31 Mar 2006
£109,000
View +3 more
More details

31 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Semi-detached
🛏️ 7bed
📐 1410 sq ft
Today
£242,270
streetscan.co.uk estimate
24 Aug 2007
£143,500
24 Mar 2000
£64,950
More details

32 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£294,417
streetscan.co.uk estimate
10 Dec 1999
£62,950

33 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£225,003
streetscan.co.uk estimate
11 Jul 2003
£71,950
3 Dec 1999
£48,950

34 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£188,894
streetscan.co.uk estimate
17 Sep 2004
£94,000
7 Jul 2003
£69,995
26 Jan 2000
£51,250

35 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£297,776
streetscan.co.uk estimate
5 Nov 1999
£63,950

36 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£243,712
streetscan.co.uk estimate
28 Oct 2005
£133,500
12 Nov 1999
£62,950

37 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 4bed
📐 624 sq ft
Today
£180,286
streetscan.co.uk estimate
8 Nov 2019
£124,000
17 Oct 2014
£95,000
View +3 more
More details

38 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 4bed
📐 624 sq ft
Today
£191,224
streetscan.co.uk estimate
1 Feb 2019
£127,000
13 Dec 2007
£123,000
View +3 more
More details

39 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Terraced
🛏️ 5bed
📐 764 sq ft
Today
£237,460
streetscan.co.uk estimate
16 Aug 2021
£195,000
10 Dec 1999
£59,800
More details

4 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£354,073
streetscan.co.uk estimate
25 May 2001
£89,950

40 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£332,307
streetscan.co.uk estimate
13 Jul 2001
£86,950

41 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£291,944
streetscan.co.uk estimate
30 Jan 2006
£160,000
13 Sep 2002
£99,995
19 Sep 2001
£99,950

5 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£326,114
streetscan.co.uk estimate
24 Aug 2007
£193,000
25 May 2001
£99,950

6 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£367,173
streetscan.co.uk estimate
20 Dec 2007
£216,950
22 Jun 2007
£210,000
20 Apr 2001
£100,950

7 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£347,533
streetscan.co.uk estimate
30 Mar 2001
£88,950

8 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

🏠 Detached
🛏️ 6bed
📐 1033 sq ft
Today
£336,432
streetscan.co.uk estimate
8 Oct 2001
£89,950
More details

9 Rhos Y Dderwen, Blackwood, Caerphilly, NP12 1HB

Today
£404,961
streetscan.co.uk estimate
10 Jul 2003
£142,950
20 Apr 2001
£97,950

Area Insights

Data Sources

Properties at NP12 1HB appear one hundred and fourteen times in the Land Registry records, with the latest transaction recorded on 20 Jun 2025. It also has twenty-two Energy Performance Certificates (EPC) entries, the earliest dating back to 11 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.