William Street, Abercynon, Mountain Ash
House prices, sold prices and local information for CF45 4RW.
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At a glance
18 property sales on William Street, Abercynon, Mountain Ash have been recorded by HM Land Registry since 2017. In the last 12 months 1 home sold here for an average of £106,000. Most sales here are terraced homes, which have sold for an average of £107,337. 6 homes here have sold more than once since 2017; 6 of them sold for more the second time. Recorded sale prices on William Street range from £48,000 to £167,000. 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 CF45 house prices.
Average sale price by year
Tenure: 100% freehold and 0% leasehold across 19 recorded sales.
Prices by property type
| Type | Sales | Average price | Last sold |
|---|---|---|---|
| Terraced | 18 | £107,337 | 16 Jul 2026 |
Sold prices on William Street
| Address | Date | Price | Type | Tenure |
|---|---|---|---|---|
| 31, William Street CF45 4RW | 16 Jul 2026 | £106,000 | Terraced | Freehold |
| 23, William Street CF45 4RW | 8 May 2025 | £155,000 | Terraced | Freehold |
| 20, William Street CF45 4RW | 13 Sep 2024 | £98,000 | Terraced | Freehold |
| 29, William Street CF45 4RW | 9 Sep 2024 | £167,000 | Terraced | Freehold |
| 10, William Street CF45 4RW | 21 Apr 2023 | £159,995 | Terraced | Freehold |
| 8, William Street CF45 4RW | 19 Dec 2022 | £103,618 | Terraced | Freehold |
| 19, William Street CF45 4RW | 3 Nov 2022 | £144,950 | Terraced | Freehold |
| 24, William Street CF45 4RW | 17 Sep 2021 | £130,000 | Terraced | Freehold |
| 29, William Street CF45 4RW | 17 Jun 2021 | £136,500 | Terraced | Freehold |
| 27, William Street CF45 4RW | 9 Oct 2020 | £72,500 | Terraced | Freehold |
| 29, William Street CF45 4RW | 13 Mar 2020 | £120,000 | Terraced | Freehold |
| 16, William Street CF45 4RW | 29 May 2019 | £105,000 | Terraced | Freehold |
| 24, William Street CF45 4RW | 8 May 2019 | £59,501 | Terraced | Freehold |
| 5, William Street CF45 4RW | 3 Oct 2018 | £128,500 | Terraced | Freehold |
| 22, William Street CF45 4RW | 25 Jul 2018 | £60,000 | Terraced | Freehold |
| 22, William Street CF45 4RW | 11 Sep 2017 | £48,000 | Terraced | Freehold |
| 5, William Street CF45 4RW | 8 Aug 2017 | £52,000 | Terraced | Freehold |
| 31, William Street CF45 4RW | 15 Mar 2017 | £68,000 | Terraced | Freehold |
| 23, William Street CF45 4RW | 17 Feb 2017 | £77,000 | Terraced | 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 |
|---|---|---|
| 31, William Street | £68,000 (Mar 2017) → £106,000 (Jul 2026) | +56% over 9 yrs |
| 23, William Street | £77,000 (Feb 2017) → £155,000 (May 2025) | +101% over 8 yrs |
| 29, William Street | £120,000 (Mar 2020) → £136,500 (Jun 2021) → £167,000 (Sep 2024) | +39% over 4 yrs |
| 24, William Street | £59,501 (May 2019) → £130,000 (Sep 2021) | +118% over 2 yrs |
| 5, William Street | £52,000 (Aug 2017) → £128,500 (Oct 2018) | +147% over 1 yr |
| 22, William Street | £48,000 (Sep 2017) → £60,000 (Jul 2018) | +25% over under a year |
Buying on William Street?
Crime and flood risk near William Street
Crime
39 crimes were reported within about a mile of William Street in August 2026.
| Violence & sexual offences | 16 |
| Public order | 8 |
| Anti-social behaviour | 3 |
| Vehicle crime | 3 |
| Criminal damage & arson | 2 |
| Other theft | 2 |
Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.
Flood risk
William Street is not in or near any Environment Agency flood warning or alert area.
Flood warning areas cover places at risk from rivers and the sea. Surface water risk isn't included. Check the long-term flood risk for a postcode on GOV.UK.
Getting around, shops and health
Train stations
- Abercynon station 0.1 mi · 1 min walk
- Quakers Yard station 1.2 mi · 24 min walk
- Penrhiwceiber station 2.2 mi · 44 min walk
Nearest bus stops
- Abercynon Railway Station (nr, Station Road) 1 min walk
- Post Office (opp, Aberdare Road) 2 min walk
- Post Office (o/s, Aberdare Road) 2 min walk
- Station Road (opp, Margaret Street) 2 min walk
GP surgeries
- Abercynon Medical Centre
Ynysmeurig Road, Abercynon, Mountain Ash · 0.2 mi - Ynysybwl Surgery
The Square, Robert Street, Pontypridd · 1.3 mi - Nelson Surgery
Bryncelyn, Nelson, Treharris · 1.7 mi - Treharris Primary Care Centre
Fox Street, Treharris · 1.9 mi
Supermarkets
- The Co-operative Food Co-op Ynysybwl · 1.3 mi
- Spar PFS Spar Certas - Treharris · 1.5 mi
- Aldi Aldi Mafon Road, Nelson, Treharris · 1.7 mi
- The Co-operative Food Co-op Treharris · 1.9 mi
Pharmacies
- Knights Cynon Pharmacy · 0.1 mi
- Knights Abercynon Pharmacy · 0.1 mi
- Allied Pharmacy Ynysybwl · 1.3 mi
Dentists
- Dental Surgery · 0.1 mi
- Treharris Dental Clinic · 1.9 mi
- Cwm Taf Morgannwg Uhb · 1.9 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 | 78.4% | 62.5% |
| Private rented | 19.6% | 20.3% |
| Social rented | 2.1% | 17.1% |
| Households | 634 |
People
| Here | Eng & Wales | |
|---|---|---|
| Under 15 | 17.1% | 17.4% |
| Aged 15–64 | 63.5% | 64.1% |
| Aged 65+ | 19.4% | 18.6% |
| Residents | 1,487 |
Broadband
| Here | UK | |
|---|---|---|
| Superfast (30Mbit+) | 100% | 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 | 83% | 89% |
| 4G indoors, at least 1 network | 100% | 100% |
| 4G outdoors, all 4 networks | 96% | 99% |
| Calls indoors, all 4 networks | 94% | 92% |
Share of homes across Rhondda Cynon Taf 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 | Rhondda Cynon Taf | |
|---|---|---|
| White | 98.2% | 96.7% |
| Mixed or Multiple ethnic groups | 0.7% | 1% |
| Other ethnic group | 0.5% | 0.3% |
| Asian, Asian British or Asian Welsh | 0.3% | 1.5% |
| Black, Black British, Black Welsh, Caribbean or African | 0.2% | 0.4% |
Religion
| Here | Rhondda Cynon Taf | |
|---|---|---|
| No religion | 52.6% | 56.2% |
| Christian | 42.1% | 36.4% |
| Not answered | 4.1% | 5.8% |
| Other religion | 0.4% | 0.5% |
| Hindu | 0.3% | 0.2% |
| Sikh | 0.3% | 0.1% |
| Buddhist | 0.1% | 0.2% |
| Jewish | 0% | – |
Country of birth
| Here | Rhondda Cynon Taf | |
|---|---|---|
| Born in the UK | 97.9% | 96.3% |
| Born outside the UK | 2.1% | 3.7% |
Highest qualification
| Here | Rhondda Cynon Taf | |
|---|---|---|
| Level 4 qualifications and above | 24.6% | 26.7% |
| No qualifications | 24.2% | 24.2% |
| Level 3 qualifications | 17.3% | 16.8% |
| Level 2 qualifications | 14.9% | 15% |
| Level 1 and entry level qualifications | 10.2% | 9.4% |
| Apprenticeship | 5.7% | 5.1% |
| Other qualifications | 3.1% | 2.7% |
General health
| Here | Rhondda Cynon Taf | |
|---|---|---|
| Very good health | 48.9% | 44.5% |
| Good health | 31.5% | 31.7% |
| Fair health | 12.8% | 15.5% |
| Bad health | 4.7% | 6.3% |
| Very bad health | 2.2% | 1.9% |
Cars or vans per household
| Here | Rhondda Cynon Taf | |
|---|---|---|
| 1 car or van in household | 44.3% | 41.8% |
| 2 cars or vans in household | 29.2% | 26.6% |
| No cars or vans in household | 15.7% | 22.2% |
| 3 or more cars or vans in household | 10.7% | 9.3% |
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 Rhondda Cynon Taf.
Planning and heritage near William Street
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Noise, radon and ground hazards
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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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Thinking of selling on William Street?
What's my home worth?
Get an instant estimate from what you paid and how prices in Rhondda Cynon Taf have moved since.
Council tax here
Rhondda Cynon Taf Band D is £2,289 a year (Band A £1,526). See every band.
Estate agents near William Street
- Belvoir! 2.7 mi
- Hoskins & Johnson 3.0 mi
- Peter Alan 3.0 mi
- T Samuel Estate Agents 3.4 mi
- Durbin & Co Estate Agents 3.5 mi
Agent locations © OpenStreetMap contributors. More local agents
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