Over the past 30 years, there have been 21 property sales recorded in the SA31 3PN postcode area. The highest sale price reached £270,000, while the most recent sale was for a detached house sold in June 2025 for £224,500.

The estimated average property value in SA31 3PN currently stands at £281,483, which is approximately 9% higher than the city average, indicating a potentially more desirable or in-demand location.

In terms of size, the average price per square metre is approximately £2,973.

Property prices in SA31 3PN have risen by 3.8% over the past year , with a total increase of 33.2% over the past five years, and a long-term rise of 61.4% over the past decade.

The most common type of property sold in the area is detached, making up around 95% of transactions , followed by semi-detached.

Housing in SA31 3PN is predominantly owner-occupied, with an estimated 100% of homes being lived in by the owners.

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Property Sales

1 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

Today
£312,356
streetscan.co.uk estimate
26 Nov 1999
£70,000

10 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

Today
£320,342
streetscan.co.uk estimate
16 Aug 2001
£82,000

11 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 6bed
📐 1119 sq ft
Today
£329,557
streetscan.co.uk estimate
27 Nov 2006
£215,000
30 Jun 1995
£65,000
More details

12 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 4bed
📐 883 sq ft
Today
£227,216
streetscan.co.uk estimate
16 Jun 2025
£224,500
19 Apr 2013
£165,000
View +1 more
More details

13 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 6bed
📐 1163 sq ft
Today
£274,366
streetscan.co.uk estimate
23 Oct 2017
£182,000
More details

14 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 5bed
📐 947 sq ft
Today
£217,791
streetscan.co.uk estimate
1 May 2025
£211,500
15 Jun 2012
£160,000
View +1 more
More details

15 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 5bed
📐 904 sq ft
Today
£302,883
streetscan.co.uk estimate
29 Mar 1996
£54,000
More details

3 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

Today
£282,375
streetscan.co.uk estimate
10 Jul 2000
£67,500

4 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

Today
£265,960
streetscan.co.uk estimate
17 Feb 2016
£160,000

5 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

Today
£261,706
streetscan.co.uk estimate
11 Jul 1997
£55,000

6 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

Today
£316,818
streetscan.co.uk estimate
26 Nov 1999
£71,000
18 Dec 1995
£45,000

7 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 7bed
📐 1253 sq ft
Today
£300,856
streetscan.co.uk estimate
13 Jun 2012
£175,000
More details

9 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN

🏠 Detached
🛏️ 6bed
📐 980 sq ft
Today
£269,196
streetscan.co.uk estimate
22 Dec 2022
£270,000
18 Jan 2019
£185,000
View +1 more
More details

Area Insights

Data Sources

Properties at SA31 3PN appear twenty-one times in the Land Registry records, with the latest transaction recorded on 16 Jun 2025. It also has seven Energy Performance Certificates (EPC) entries, the earliest dating back to 20 May 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.