William Street, Ystradgynlais, Swansea
House prices, sold prices and local information for SA9 1AT.
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At a glance
8 property sales on William Street, Ystradgynlais, Swansea have been recorded by HM Land Registry since 2018. In the last 12 months 1 home sold here for an average of £163,000. Most sales here are terraced homes, which have sold for an average of £124,300. 2 homes here have sold more than once since 2018; 2 of them sold for more the second time. By property type, sales here have been 63% terraced, 25% detached, 13% semi-detached. Recorded sale prices on William Street range from £85,000 to £235,000. Every home sold here was sold freehold.
House prices on William Street compared
Average sale price over the last 12 months. William Street has had fewer than two sales in that time, so it is left out. See all SA9 house prices.
Average sale price by year
Tenure: 100% freehold and 0% leasehold across 10 recorded sales.
Prices by property type
| Type | Sales | Average price | Last sold |
|---|---|---|---|
| Terraced | 5 | £124,300 | 19 Dec 2025 |
| Detached | 2 | £212,500 | 14 Nov 2019 |
| Semi-detached | 1 | £209,950 | 18 Jul 2025 |
Sold prices on William Street
| Address | Date | Price | Type | Tenure |
|---|---|---|---|---|
| 26, William Street SA9 1AT | 19 Dec 2025 | £163,000 | Terraced | Freehold |
| 2, William Street SA9 1AT | 18 Jul 2025 | £209,950 | Semi-detached | Freehold |
| Erw Las, 5, William Street SA9 1AT | 16 May 2025 | £140,000 | Terraced | Freehold |
| 20, William Street SA9 1AT | 15 Dec 2023 | £125,000 | Terraced | Freehold |
| 15, William Street SA9 1AT | 26 Mar 2021 | £127,000 | Terraced | Freehold |
| 15, William Street SA9 1AT | 14 Feb 2020 | £121,500 | Terraced | Freehold |
| Ty Gardd, William Street SA9 1AT | 14 Nov 2019 | £235,000 | Detached | Freehold |
| 3, William Street SA9 1AT | 3 Apr 2019 | £85,000 | Terraced | Freehold |
| Ty Gardd, William Street SA9 1AT | 9 Mar 2018 | £190,000 | Detached | Freehold |
| Ty Gardd, William Street SA9 1AT | 14 Oct 2016 | £38,000 | Other | Freehold |
Sale prices are as recorded by HM Land Registry. Some sales (for example repossessions and company purchases) are listed but left out of the averages.
Sale history: homes sold more than once
| Address | Sales | Change |
|---|---|---|
| 15, William Street | £121,500 (Feb 2020) → £127,000 (Mar 2021) | +5% over 1 yr |
| Ty Gardd, William Street | £38,000 (Oct 2016) → £190,000 (Mar 2018) → £235,000 (Nov 2019) | +518% over 3 yrs |
Buying on William Street?
Getting around, shops and health
Nearest bus stops
- Glanrhyd Hospital (opp, Yniscedwyn Road) 1 min walk
- Glanrhyd Hospital (o/s, Glanrhyd Road) 1 min walk
- Post Office (nr, Wind Road) 2 min walk
- Post Office (nr, Wind Road) 3 min walk
GP surgeries
- Pengorof Surgery
Gorof Road, Lower Cwmtwrch, Swansea · 0.6 mi - Dulais Valley Prim Care Centre
Dulais Valley Primary Care, Dulais Road, Neath · 1.9 mi - Amman Tawe Partnership
4 Gwilym Road, Cwmllynfell, Swansea · 3.1 mi
Supermarkets
- Tesco Tesco Ystradgynlais Superstore · 0.3 mi
- Morrisons Daily Morrisons Daily Ystradgynlais · 0.8 mi
- Asda Supermarket Asda Ystalyfera Supermarket · 1.1 mi
Pharmacies
- Davies Chemists Limited · 0.5 mi
- Ew Richards · 0.7 mi
- Jg & Rj Davies Chemists · 0.8 mi
Dentists
- Community Dental Clinic · 0.1 mi
- M J Taylor Dental Surgery · 0.8 mi
- Dental Surgery · 2.8 mi
Sources: Department for Transport (NaPTAN), NHS England organisation data, and GEOLYTIX Retail Points (open data). Walking times are estimates from straight-line distance.
Area profile
Homes
| Here | Eng & Wales | |
|---|---|---|
| Owned | 75.1% | 62.5% |
| Private rented | 10.5% | 20.3% |
| Social rented | 14.2% | 17.1% |
| Households | 960 |
People
| Here | Eng & Wales | |
|---|---|---|
| Under 15 | 14.4% | 17.4% |
| Aged 15–64 | 54.7% | 64.1% |
| Aged 65+ | 31.0% | 18.6% |
| Residents | 2,064 |
Broadband
| Here | UK | |
|---|---|---|
| Superfast (30Mbit+) | 97% | 95% |
| Ultrafast (300Mbit+) | 0% | 80% |
| Gigabit-capable | 0% | 80% |
Share of homes on this street's postcodes that can get each speed. UK figure is the average across all postcodes. Source: Ofcom Connected Nations.
Mobile signal
| Here | Eng & Wales | |
|---|---|---|
| 4G indoors, all 4 networks | 73% | 89% |
| 4G indoors, at least 1 network | 96% | 100% |
| 4G outdoors, all 4 networks | 92% | 99% |
| Calls indoors, all 4 networks | 77% | 92% |
Share of homes across Powys with good coverage (Jul 2025). Signal varies street by street; check your exact address on Ofcom's checker. Source: Ofcom Connected Nations.
Neighbourhood figures cover the surrounding Lower Layer Super Output Area (about 1,500 residents). Sources: Census 2021 (ONS) and the English Indices of Deprivation 2025.
Energy ratings and home sizes on William Street
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Who lives around William Street
Ethnic group
| Here | Powys | |
|---|---|---|
| White | 97.1% | 97.7% |
| Asian, Asian British or Asian Welsh | 1.7% | 0.9% |
| Mixed or Multiple ethnic groups | 0.7% | 0.8% |
| Black, Black British, Black Welsh, Caribbean or African | 0.2% | 0.2% |
| Other ethnic group | 0.2% | 0.3% |
Religion
| Here | Powys | |
|---|---|---|
| Christian | 51.3% | 48.9% |
| No religion | 39.5% | 42% |
| Not answered | 6.9% | 7.2% |
| Muslim | 1.1% | 0.3% |
| Buddhist | 0.7% | 0.4% |
| Other religion | 0.5% | 0.7% |
| Hindu | 0% | 0.2% |
| Jewish | 0% | 0.1% |
Country of birth
| Here | Powys | |
|---|---|---|
| Born in the UK | 97.3% | 95.2% |
| Born outside the UK | 2.7% | 4.8% |
Highest qualification
| Here | Powys | |
|---|---|---|
| Level 4 qualifications and above | 32.5% | 31.9% |
| No qualifications | 20.3% | 18.9% |
| Level 3 qualifications | 14.2% | 17% |
| Level 2 qualifications | 13.8% | 14.9% |
| Level 1 and entry level qualifications | 8.9% | 8.6% |
| Apprenticeship | 8.3% | 6.1% |
| Other qualifications | 1.9% | 2.6% |
General health
| Here | Powys | |
|---|---|---|
| Very good health | 42.3% | 44.5% |
| Good health | 31.9% | 34.5% |
| Fair health | 17.2% | 15.1% |
| Bad health | 6.8% | 4.5% |
| Very bad health | 1.8% | 1.3% |
Cars or vans per household
| Here | Powys | |
|---|---|---|
| 1 car or van in household | 43.8% | 40.9% |
| 2 cars or vans in household | 26.3% | 31% |
| No cars or vans in household | 16.3% | 13.1% |
| 3 or more cars or vans in household | 13.8% | 15% |
Source: Census 2021 (ONS), via Nomis. Percentages of usual residents or households, as recorded in March 2021.
Figures cover the surrounding neighbourhood (Lower Layer Super Output Area, about 1,500 residents). Full demographics of Powys.
Planning and heritage near William Street
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Planning applications near William Street
Recent planning applications around William Street from the council's planning register. Choose how far to look:
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Council tax here
Powys Band D is £2,352 a year (Band A £1,568). See every band.
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