Clas Y Dderwen, Mountain Ash
House prices, sold prices and local information for CF45 4LN.
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At a glance
6 property sales on Clas Y Dderwen, Mountain Ash have been recorded by HM Land Registry since 2017. The most recent sale was on 18 Oct 2024. Most sales here are terraced homes, which have sold for an average of £141,099. By property type, sales here have been 83% terraced, 17% semi-detached. Recorded sale prices on Clas Y Dderwen range from £97,500 to £270,000. Every home sold here was sold freehold.
House prices on Clas Y Dderwen compared
Average sale price over the last 12 months. Clas Y Dderwen 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 6 recorded sales.
Prices by property type
| Type | Sales | Average price | Last sold |
|---|---|---|---|
| Terraced | 5 | £141,099 | 18 Oct 2024 |
| Semi-detached | 1 | £109,000 | 16 Jan 2019 |
Sold prices on Clas Y Dderwen
| Address | Date | Price | Type | Tenure |
|---|---|---|---|---|
| 16, Clas Y Dderwen CF45 4LN | 18 Oct 2024 | £270,000 | Terraced | Freehold |
| 7, Clas Y Dderwen CF45 4LN | 5 Jan 2024 | £109,995 | Terraced | Freehold |
| 11, Clas Y Dderwen CF45 4LN | 21 May 2021 | £113,000 | Terraced | Freehold |
| 1, Clas Y Dderwen CF45 4LN | 7 Aug 2020 | £97,500 | Terraced | Freehold |
| 17, Clas Y Dderwen CF45 4LN | 16 Jan 2019 | £109,000 | Semi-detached | Freehold |
| 9, Clas Y Dderwen CF45 4LN | 17 Nov 2017 | £115,000 | 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.
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Crime and flood risk near Clas Y Dderwen
Crime
98 crimes were reported within about a mile of Clas Y Dderwen in August 2026.
| Violence & sexual offences | 54 |
| Anti-social behaviour | 11 |
| Criminal damage & arson | 9 |
| Public order | 9 |
| Drugs | 4 |
| Other theft | 4 |
Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.
Flood risk
Clas Y Dderwen 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
- Mountain Ash station 0.2 mi · 4 min walk
- Penrhiwceiber station 1.0 mi · 21 min walk
- Fernhill station 1.1 mi · 21 min walk
Nearest bus stops
- New Road (on, New Road (A4059)) 3 min walk
- Cae Garw Primary School (o/s, Troed-y-Rhiw Road) 4 min walk
- Nixon`s (after, Miskin Road) 5 min walk
- Mountain Ash Railway Station (o/s, Henry Street) 5 min walk
GP surgeries
- Meddygfa Glan Cynon Surge
Ty Calon Lan, Oxford Street, Mountain Ash · 0.3 mi - Health Hub Iw
Ysbyty Cwm Cynon, New Road, Mountain Ash · 0.9 mi - Abercwmboi Medical Practice
Abercwmboi Medical Centre, 1-3 John Street, Aberdare · 1.7 mi - Brookside Medical Centre
Heol Afon Taf, Troedyrhiw, Merthyr Tydfil · 2.3 mi
Supermarkets
- Iceland Iceland Mountain Ash · 0.3 mi
- Morrisons Daily Morrisons Daily Mountain Ash · 0.3 mi
- The Co-operative Food Co-op Penrhwiceiber · 1.0 mi
- Aldi Aldi Aberaman Park Industrial Estate · 2.3 mi
Pharmacies
- Knights Mountain Ash Pharmacy · 0.3 mi
- Allied Pharmacy Mountain Ash · 0.3 mi
- Knights Penrhiwceiber Pharmacy · 1.0 mi
Dentists
- Dental Surgery · 0.3 mi
- Mountain Ash Dental Dept · 0.9 mi
- Treharris Dental Clinic · 3.2 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 | 77.7% | 62.5% |
| Private rented | 18.5% | 20.3% |
| Social rented | 3.8% | 17.1% |
| Households | 681 |
People
| Here | Eng & Wales | |
|---|---|---|
| Under 15 | 16.0% | 17.4% |
| Aged 15–64 | 66.5% | 64.1% |
| Aged 65+ | 17.5% | 18.6% |
| Residents | 1,527 |
Broadband
| Here | UK | |
|---|---|---|
| Superfast (30Mbit+) | 100% | 95% |
| Ultrafast (300Mbit+) | 100% | 80% |
| Gigabit-capable | 100% | 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 Clas Y Dderwen
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Who lives around Clas Y Dderwen
Ethnic group
| Here | Rhondda Cynon Taf | |
|---|---|---|
| White | 98.3% | 96.7% |
| Asian, Asian British or Asian Welsh | 1% | 1.5% |
| Mixed or Multiple ethnic groups | 0.5% | 1% |
| Black, Black British, Black Welsh, Caribbean or African | 0.2% | 0.4% |
| Other ethnic group | 0% | 0.3% |
Religion
| Here | Rhondda Cynon Taf | |
|---|---|---|
| No religion | 51.7% | 56.2% |
| Christian | 41.5% | 36.4% |
| Not answered | 5.6% | 5.8% |
| Other religion | 0.5% | 0.5% |
| Buddhist | 0.3% | 0.2% |
| Hindu | 0.3% | 0.2% |
| Muslim | 0.1% | 0.6% |
| Jewish | 0% | – |
Country of birth
| Here | Rhondda Cynon Taf | |
|---|---|---|
| Born in the UK | 97.1% | 96.3% |
| Born outside the UK | 2.9% | 3.7% |
Highest qualification
| Here | Rhondda Cynon Taf | |
|---|---|---|
| Level 4 qualifications and above | 29.4% | 26.7% |
| No qualifications | 19.1% | 24.2% |
| Level 2 qualifications | 18.6% | 15% |
| Level 3 qualifications | 16.5% | 16.8% |
| Level 1 and entry level qualifications | 8.9% | 9.4% |
| Apprenticeship | 4.6% | 5.1% |
| Other qualifications | 2.9% | 2.7% |
General health
| Here | Rhondda Cynon Taf | |
|---|---|---|
| Very good health | 50.8% | 44.5% |
| Good health | 30% | 31.7% |
| Fair health | 13.3% | 15.5% |
| Bad health | 5% | 6.3% |
| Very bad health | 0.8% | 1.9% |
Cars or vans per household
| Here | Rhondda Cynon Taf | |
|---|---|---|
| 1 car or van in household | 41.9% | 41.8% |
| 2 cars or vans in household | 32.2% | 26.6% |
| No cars or vans in household | 16.7% | 22.2% |
| 3 or more cars or vans in household | 9.3% | 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 Clas Y Dderwen
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Noise, radon and ground hazards
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Planning applications near Clas Y Dderwen
Recent planning applications around Clas Y Dderwen from the council's planning register. Choose how far to look:
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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 Clas Y Dderwen
- T Samuel Estate Agents 0.3 mi
- Durbin & Co Estate Agents 0.3 mi
- W J Holder & Co 3.6 mi
Agent locations © OpenStreetMap contributors. More local agents
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