River Avenue, Trelewis, Treharris
House prices, sold prices and local information for CF46 6EF.
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At a glance
28 property sales on River Avenue, Trelewis, Treharris have been recorded by HM Land Registry since 2016. In the last 12 months 2 homes sold here for an average of £264,500. Most sales here are detached homes, which have sold for an average of £258,354. Average sale prices rose from £210,000 in 2016 to £264,500 in 2026 (+26%), though averages on a single street can swing with the mix of homes sold. That is 39% above the Treharris average of £190,683 over the same period. 7 homes here have sold more than once since 2016; 6 of them sold for more the second time. By property type, sales here have been 50% detached, 25% semi-detached, 25% terraced. Recorded sale prices on River Avenue range from £145,000 to £345,000. Every home sold here was sold freehold. Of 15 streets in Treharris with at least two sales in the last year, River Avenue ranks 2nd for average price.
House prices on River Avenue compared
Average sale price over the last 12 months. See all CF46 house prices.
Average sale price by year
Tenure: 100% freehold and 0% leasehold across 28 recorded sales.
Prices by property type
| Type | Sales | Average price | Last sold |
|---|---|---|---|
| Detached | 14 | £258,354 | 22 May 2026 |
| Semi-detached | 7 | £219,286 | 3 Jun 2025 |
| Terraced | 7 | £175,464 | 24 Mar 2026 |
Sold prices on River Avenue
| Address | Date | Price | Type | Tenure |
|---|---|---|---|---|
| 3, River Avenue CF46 6EF | 22 May 2026 | £345,000 | Detached | Freehold |
| 22, River Avenue CF46 6EF | 24 Mar 2026 | £184,000 | Terraced | Freehold |
| 25, River Avenue CF46 6EF | 1 Aug 2025 | £315,000 | Detached | Freehold |
| 19, River Avenue CF46 6EF | 3 Jun 2025 | £260,000 | Semi-detached | Freehold |
| 12, River Avenue CF46 6EF | 14 Jun 2024 | £291,000 | Detached | Freehold |
| 19, River Avenue CF46 6EF | 3 Feb 2023 | £268,000 | Semi-detached | Freehold |
| 18, River Avenue CF46 6EF | 1 Nov 2022 | £310,000 | Detached | Freehold |
| 37, River Avenue CF46 6EF | 14 Mar 2022 | £260,000 | Semi-detached | Freehold |
| 25, River Avenue CF46 6EF | 5 Nov 2021 | £290,000 | Detached | Freehold |
| 23, River Avenue CF46 6EF | 15 Oct 2021 | £190,000 | Terraced | Freehold |
| 29, River Avenue CF46 6EF | 29 Jun 2021 | £300,000 | Detached | Freehold |
| 10, River Avenue CF46 6EF | 28 Jun 2021 | £170,000 | Terraced | Freehold |
| 8, River Avenue CF46 6EF | 23 Jun 2021 | £200,000 | Terraced | Freehold |
| 23, River Avenue CF46 6EF | 25 Oct 2019 | £169,250 | Terraced | Freehold |
| 36, River Avenue CF46 6EF | 19 Jul 2019 | £195,000 | Semi-detached | Freehold |
| 32, River Avenue CF46 6EF | 12 Mar 2019 | £195,000 | Semi-detached | Freehold |
| 8, River Avenue CF46 6EF | 6 Feb 2019 | £170,000 | Terraced | Freehold |
| 25, River Avenue CF46 6EF | 14 Jan 2019 | £219,000 | Detached | Freehold |
| 20, River Avenue CF46 6EF | 9 Nov 2018 | £187,000 | Semi-detached | Freehold |
| 2, River Avenue CF46 6EF | 2 Nov 2018 | £229,950 | Detached | Freehold |
| 9, River Avenue CF46 6EF | 15 Jun 2018 | £145,000 | Terraced | Freehold |
| 30, River Avenue CF46 6EF | 27 Oct 2017 | £225,000 | Detached | Freehold |
| 18, River Avenue CF46 6EF | 23 Jun 2017 | £212,000 | Detached | Freehold |
| 37, River Avenue CF46 6EF | 18 Nov 2016 | £170,000 | Semi-detached | Freehold |
| 1, River Avenue CF46 6EF | 11 Nov 2016 | £248,000 | Detached | Freehold |
| 31, River Avenue CF46 6EF | 29 Jul 2016 | £203,000 | Detached | Freehold |
| 12, River Avenue CF46 6EF | 20 May 2016 | £214,000 | Detached | Freehold |
| 13, River Avenue CF46 6EF | 19 Feb 2016 | £215,000 | Detached | 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 |
|---|---|---|
| 25, River Avenue | £219,000 (Jan 2019) → £290,000 (Nov 2021) → £315,000 (Aug 2025) | +44% over 7 yrs |
| 19, River Avenue | £268,000 (Feb 2023) → £260,000 (Jun 2025) | -3% over 2 yrs |
| 12, River Avenue | £214,000 (May 2016) → £291,000 (Jun 2024) | +36% over 8 yrs |
| 18, River Avenue | £212,000 (Jun 2017) → £310,000 (Nov 2022) | +46% over 5 yrs |
| 37, River Avenue | £170,000 (Nov 2016) → £260,000 (Mar 2022) | +53% over 5 yrs |
| 23, River Avenue | £169,250 (Oct 2019) → £190,000 (Oct 2021) | +12% over 2 yrs |
| 8, River Avenue | £170,000 (Feb 2019) → £200,000 (Jun 2021) | +18% over 2 yrs |
Buying on River Avenue?
Crime and flood risk near River Avenue
Crime
59 crimes were reported within about a mile of River Avenue in August 2026.
| Violence & sexual offences | 17 |
| Anti-social behaviour | 14 |
| Criminal damage & arson | 6 |
| Other theft | 5 |
| Shoplifting | 5 |
| Public order | 4 |
Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.
Flood risk
River Avenue 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
- Quakers Yard station 1.6 mi · 31 min walk
- Abercynon station 2.3 mi · 45 min walk
- Ystrad Mynach station 2.5 mi · 49 min walk
Nearest bus stops
- Tydvil Close (after, Gelligaer Road) 3 min walk
- Tydvil Close (before, Gelligaer Road) 3 min walk
- Llancaiach Fawr (before, Gelligaer Road) 4 min walk
- Llancaiach Fawr (after, Gelligaer Road) 4 min walk
GP surgeries
- Treharris Primary Care Centre
Fox Street, Treharris · 0.7 mi - Nelson Surgery
Bryncelyn, Nelson, Treharris · 0.9 mi - Meddygfa Gelligaer Surgery
Heol Hen Ysgol, Gelligaer, Hengoed · 1.6 mi - Abercynon Medical Centre
Ynysmeurig Road, Abercynon, Mountain Ash · 2.1 mi
Supermarkets
- The Co-operative Food Co-op Treharris · 0.7 mi
- The Co-operative Food Co-op Nelson · 0.8 mi
- Aldi Aldi Mafon Road, Nelson, Treharris · 1.1 mi
- Spar PFS Spar Certas - Treharris · 1.2 mi
Pharmacies
- Well · 0.7 mi
- Knights Nelson Pharmacy · 0.9 mi
- Complete Care Pharmacy · 1.5 mi
Dentists
- Treharris Dental Clinic · 0.7 mi
- Cwm Taf Morgannwg Uhb · 0.7 mi
- Dental Surgery · 0.8 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 | 72.0% | 62.5% |
| Private rented | 12.7% | 20.3% |
| Social rented | 15.3% | 17.1% |
| Households | 979 |
People
| Here | Eng & Wales | |
|---|---|---|
| Under 15 | 20.3% | 17.4% |
| Aged 15–64 | 62.9% | 64.1% |
| Aged 65+ | 16.8% | 18.6% |
| Residents | 2,408 |
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 | 85% | 89% |
| 4G indoors, at least 1 network | 100% | 100% |
| 4G outdoors, all 4 networks | 98% | 99% |
| Calls indoors, all 4 networks | 97% | 92% |
Share of homes across Merthyr Tydfil 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 River Avenue
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Who lives around River Avenue
Ethnic group
| Here | Merthyr Tydfil | |
|---|---|---|
| White | 98.5% | 97.1% |
| Asian, Asian British or Asian Welsh | 0.7% | 1.5% |
| Mixed or Multiple ethnic groups | 0.5% | 0.9% |
| Black, Black British, Black Welsh, Caribbean or African | 0.1% | 0.2% |
| Other ethnic group | 0.1% | 0.4% |
Religion
| Here | Merthyr Tydfil | |
|---|---|---|
| No religion | 61.8% | 53.2% |
| Christian | 32.5% | 40.1% |
| Not answered | 5% | 5.2% |
| Hindu | 0.3% | 0.2% |
| Muslim | 0.2% | 0.5% |
| Buddhist | 0.1% | 0.2% |
| Sikh | 0.1% | 0.1% |
| Other religion | 0.1% | 0.4% |
Country of birth
| Here | Merthyr Tydfil | |
|---|---|---|
| Born in the UK | 97.7% | 94.4% |
| Born outside the UK | 2.3% | 5.6% |
Highest qualification
| Here | Merthyr Tydfil | |
|---|---|---|
| Level 4 qualifications and above | 27% | 25% |
| No qualifications | 23.9% | 26.9% |
| Level 3 qualifications | 16.5% | 15.6% |
| Level 2 qualifications | 15.5% | 14.5% |
| Level 1 and entry level qualifications | 10.3% | 9.6% |
| Apprenticeship | 5.1% | 5.7% |
| Other qualifications | 1.8% | 2.7% |
General health
| Here | Merthyr Tydfil | |
|---|---|---|
| Very good health | 47.1% | 45.4% |
| Good health | 30.2% | 30.2% |
| Fair health | 14.6% | 15% |
| Bad health | 6.1% | 7% |
| Very bad health | 2.1% | 2.4% |
Cars or vans per household
| Here | Merthyr Tydfil | |
|---|---|---|
| 1 car or van in household | 38.2% | 41.8% |
| 2 cars or vans in household | 35.1% | 24.6% |
| No cars or vans in household | 16.5% | 25% |
| 3 or more cars or vans in household | 10.2% | 8.5% |
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 Merthyr Tydfil.
Planning and heritage near River Avenue
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Noise, radon and ground hazards
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Planning applications near River Avenue
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What's my home worth?
Get an instant estimate from what you paid and how prices in Merthyr Tydfil have moved since.
Council tax here
Merthyr Tydfil Band D is £2,594 a year (Band A £1,729). See every band.
Estate agents near River Avenue
- Lucas Estates and Rentals 2.6 mi
- Diamond Sales and Lettings 2.6 mi
- Peter Mulcahy 2.6 mi
- Homes Estate Agents 3.0 mi
- New Horizons Estate Agents 3.0 mi
Agent locations © OpenStreetMap contributors. More local agents
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