Over the past 28 years, there have been 32 property sales recorded in the SA9 1AT postcode area. The highest sale price reached £235,000, while the most recent sale was a property sold in July 2025 for £209,950.

The estimated average property value in SA9 1AT currently stands at £141,311, which is approximately 42% 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 £1,596.

Property prices in SA9 1AT have risen by 1.4% over the past year , with a total increase of 29% over the past five years, and a long-term rise of 65.7% over the past decade.

The most common type of property sold in the area is terraced, making up around 63% of transactions , followed by semi-detached and detached.

Housing in SA9 1AT is predominantly owner-occupied, with an estimated 92% of homes being lived in by the owners.

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Property Sales

1 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£102,186
streetscan.co.uk estimate
25 Apr 2001
£28,000

10 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 5bed
📐 732 sq ft
Today
£108,402
streetscan.co.uk estimate
22 Apr 2005
£65,000
More details

15 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 4bed
📐 876 sq ft
Today
£154,590
streetscan.co.uk estimate
26 Mar 2021
£127,000
14 Feb 2020
£121,500
View +1 more
More details

19 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Detached
🛏️ 4bed
📐 1114 sq ft
Today
£110,623
streetscan.co.uk estimate
29 Nov 2013
£71,000
More details

2 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£225,447
streetscan.co.uk estimate
18 Jul 2025
£209,950

20 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 4bed
📐 818 sq ft
Today
£132,640
streetscan.co.uk estimate
15 Dec 2023
£125,000
22 Dec 2014
£87,000
View +1 more
More details

21 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 3bed
📐 786 sq ft
Today
£113,520
streetscan.co.uk estimate
31 Jul 2015
£73,000
More details

22 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 5bed
📐 883 sq ft
Today
£127,262
streetscan.co.uk estimate
18 Sep 2015
£84,000
11 Jan 2008
£90,000
More details

24 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£121,642
streetscan.co.uk estimate
21 Mar 2002
£34,000

26 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 5bed
📐 1615 sq ft
Today
£144,340
streetscan.co.uk estimate
16 Feb 2007
£95,000
More details

3 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 5bed
📐 936 sq ft
Today
£117,821
streetscan.co.uk estimate
3 Apr 2019
£85,000
2 Sep 1997
£38,000
More details

4 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£103,046
streetscan.co.uk estimate
17 Jul 2009
£65,000

5 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Semi-detached
🛏️ 5bed
📐 947 sq ft
Today
£185,146
streetscan.co.uk estimate
29 Jun 2007
£125,000
15 Apr 2005
£72,000
View +1 more
More details

6 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 5bed
📐 915 sq ft
Today
£119,078
streetscan.co.uk estimate
24 May 2013
£75,000
More details

7 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 5bed
📐 915 sq ft
Today
£130,780
streetscan.co.uk estimate
23 Nov 2012
£82,000
13 Sep 2002
£57,000
View +1 more
More details

9 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Terraced
🛏️ 3bed
📐 689 sq ft
Today
£116,490
streetscan.co.uk estimate
2 Sep 1999
£27,500
More details

Erw Las, 5 William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£140,429
streetscan.co.uk estimate
29 Feb 2012
£85,000

The Nook William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£182,538
streetscan.co.uk estimate
6 Jul 1999
£44,000

Ty Gardd William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

🏠 Detached
🛏️ bed
📐 1184 sq ft
Today
£300,812
streetscan.co.uk estimate
14 Nov 2019
£235,000
9 Mar 2018
£190,000
View +1 more
More details

Tynedale William Street, Ystradgynlais, Swansea, Powys, SA9 1AT

Today
£251,018
streetscan.co.uk estimate
2 Oct 2000
£65,000

Area Insights

Data Sources

Properties at SA9 1AT appear thirty-two times in the Land Registry records, with the latest transaction recorded on 18 Jul 2025. It also has thirteen Energy Performance Certificates (EPC) entries, the earliest dating back to 28 Sep 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.