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Trem Y Dyffryn, Mountain Ash

MyStreetCheck free street report: Trem Y Dyffryn, Mountain Ash · 31 October 2026 · www.mystreetcheck.co.uk/mountain-ash-rhondda-cynon-taff/trem-y-dyffryn/

House prices, sold prices and local information for CF45 4AQ.

Average price (last 12 months)
–
0 sales
Average price (since 2016)
£247,538
13 sales
Price range
£79k – £515k
lowest to highest sale
Last sale
28 Mar 2025
CF45 4AQ

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At a glance

House prices£248k averageSince 2016 (few recent sales) Crime96 reportedWithin about a mile, latest month Flood riskNo flood warning areasFrom rivers or the sea Nearest station10 min walkMountain Ash station Ultrafast broadband100% of homesNational average 80% Freehold or leaseholdAll freeholdAcross 20 Land Registry sales Planning applicationsChecking…Within 500 m, last 90 days

13 property sales on Trem Y Dyffryn, Mountain Ash have been recorded by HM Land Registry since 2016. The most recent sale was on 28 Mar 2025. Most sales here are detached homes, which have sold for an average of £267,227. 3 homes here have sold more than once since 2016; 3 of them sold for more the second time. By property type, sales here have been 85% detached, 8% flat, 8% semi-detached. Recorded sale prices on Trem Y Dyffryn range from £78,500 to £515,000. Every home sold here was sold freehold.

House prices on Trem Y Dyffryn compared

CF45 postcode area£148,988
Mountain Ash£148,988
England & Wales£358,701

Average sale price over the last 12 months. Trem Y Dyffryn has had fewer than two sales in that time, so it is left out. See all CF45 house prices.

Average sale price by year

2016: £78,500 (1 sales)2016£79k2017: £138,000 (1 sales)2017£138k2019: £262,250 (4 sales)2019£262k2020: £160,000 (1 sales)2020£160k2021: £305,000 (1 sales)2021£305k2022: £241,250 (2 sales)2022£241k2023: £515,000 (1 sales)2023£515k2024: £160,000 (1 sales)2024£160k2025: £330,000 (1 sales)2025£330k

Tenure: 100% freehold and 0% leasehold across 20 recorded sales.

Prices by property type

TypeSalesAverage priceLast sold
Detached11£267,22728 Mar 2025
Flat1£78,5009 Dec 2016
Semi-detached1£200,00011 Jul 2022

Sold prices on Trem Y Dyffryn

AddressDatePriceTypeTenure
18, Trem Y Dyffryn CF45 4AQ 28 Mar 2025£330,000 DetachedFreehold
Plot 3, Trem Y Dyffryn CF45 4AQ 11 Jul 2024£100,000 OtherFreehold
21, Trem Y Dyffryn CF45 4AQ 27 Mar 2024£160,000 DetachedFreehold
Plot 3, Trem Y Dyffryn CF45 4AQ 25 Mar 2024£120,000 OtherFreehold
Ty Gwyn, Trem Y Dyffryn CF45 4AQ 4 Dec 2023£515,000 DetachedFreehold
30, Trem Y Dyffryn CF45 4AQ 12 Dec 2022£282,500 DetachedFreehold
24, Trem Y Dyffryn CF45 4AQ 11 Jul 2022£200,000 Semi-detachedFreehold
14, Trem Y Dyffryn CF45 4AQ 10 Dec 2021£305,000 DetachedFreehold
Plot 3, Trem Y Dyffryn CF45 4AQ 30 Jul 2021£120,000 OtherFreehold
3, Trem Y Dyffryn CF45 4AQ 13 Nov 2020£160,000 DetachedFreehold
20, Trem Y Dyffryn CF45 4AQ 18 Oct 2019£260,000 DetachedFreehold
13, Trem Y Dyffryn CF45 4AQ 19 Jul 2019£236,000 DetachedFreehold
Ty Gwyn, Trem Y Dyffryn CF45 4AQ 17 Jun 2019£380,000 DetachedFreehold
28, Trem Y Dyffryn CF45 4AQ 18 Apr 2019£173,000 DetachedFreehold
Oakmont, Trem Y Dyffryn CF45 4AQ 27 Sep 2018£85,000 OtherFreehold
Plot 3, Trem Y Dyffryn CF45 4AQ 20 Jul 2018£95,000 OtherFreehold
Ty Gwyn, Trem Y Dyffryn CF45 4AQ 9 Mar 2018£89,000 OtherFreehold
Amber Lee House, Trem Y Dyffryn CF45 4AQ 12 Jan 2018£80,000 OtherFreehold
3, Trem Y Dyffryn CF45 4AQ 20 Oct 2017£138,000 DetachedFreehold
17, Trem Y Dyffryn CF45 4AQ 9 Dec 2016£78,500 FlatFreehold

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

AddressSalesChange
Plot 3, Trem Y Dyffryn £95,000 (Jul 2018) → £120,000 (Jul 2021) → £120,000 (Mar 2024) → £100,000 (Jul 2024) +5%
over 6 yrs
Ty Gwyn, Trem Y Dyffryn £89,000 (Mar 2018) → £380,000 (Jun 2019) → £515,000 (Dec 2023) +479%
over 6 yrs
3, Trem Y Dyffryn £138,000 (Oct 2017) → £160,000 (Nov 2020) +16%
over 3 yrs

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Crime and flood risk near Trem Y Dyffryn

Crime

96 crimes were reported within about a mile of Trem Y Dyffryn in August 2026.

Violence & sexual offences51
Public order12
Anti-social behaviour9
Criminal damage & arson8
Burglary4
Other theft4

Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.

Flood risk

Trem Y Dyffryn 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 0.5 mi · 10 min walk
  • Fernhill station 0.6 mi · 12 min walk
  • Penrhiwceiber station 1.6 mi · 31 min walk

Nearest bus stops

  • The Lodge (opp, Dyffryn Road) 1 min walk
  • The Lodge (after, Aberffrwd Road) 1 min walk
  • Lady Aberdare Flats (nr, Granville Terrace) 3 min walk
  • Cynon Infants School (o/s, Aberdare Road) 3 min walk

GP surgeries

  • Health Hub Iw
    Ysbyty Cwm Cynon, New Road, Mountain Ash · 0.4 mi
  • Meddygfa Glan Cynon Surge
    Ty Calon Lan, Oxford Street, Mountain Ash · 0.5 mi
  • Abercwmboi Medical Practice
    Abercwmboi Medical Centre, 1-3 John Street, Aberdare · 1.2 mi
  • Brookside Medical Centre
    Heol Afon Taf, Troedyrhiw, Merthyr Tydfil · 2.3 mi

Supermarkets

  • Morrisons Daily Morrisons Daily Mountain Ash · 0.4 mi
  • Iceland Iceland Mountain Ash · 0.5 mi
  • The Co-operative Food Co-op Penrhwiceiber · 1.5 mi
  • Aldi Aldi Aberaman Park Industrial Estate · 1.7 mi

Pharmacies

  • Allied Pharmacy Mountain Ash · 0.3 mi
  • Knights Mountain Ash Pharmacy · 0.5 mi
  • Knights Abercwmboi Pharmacy · 1.2 mi

Dentists

  • Dental Surgery · 0.4 mi
  • Mountain Ash Dental Dept · 0.4 mi
  • Gentle Dental Practice · 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

HereEng & Wales
Owned69.4%62.5%
Private rented16.0%20.3%
Social rented14.4%17.1%
Households699

People

HereEng & Wales
Under 1514.2%17.4%
Aged 15–6460.4%64.1%
Aged 65+25.3%18.6%
Residents1,460

Broadband

HereUK
Superfast (30Mbit+)100%95%
Ultrafast (300Mbit+)100%80%
Gigabit-capable100%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

HereEng & Wales
4G indoors, all 4 networks83%89%
4G indoors, at least 1 network100%100%
4G outdoors, all 4 networks96%99%
Calls indoors, all 4 networks94%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 Trem Y Dyffryn

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Who lives around Trem Y Dyffryn

Ethnic group

HereRhondda Cynon Taf
White97.7%96.7%
Mixed or Multiple ethnic groups1.2%1%
Asian, Asian British or Asian Welsh0.8%1.5%
Black, Black British, Black Welsh, Caribbean or African0.2%0.4%
Other ethnic group0%0.3%

Religion

HereRhondda Cynon Taf
No religion47.3%56.2%
Christian45.1%36.4%
Not answered6.5%5.8%
Hindu0.5%0.2%
Buddhist0.2%0.2%
Other religion0.2%0.5%
Muslim0.1%0.6%
Sikh0.1%0.1%

Country of birth

HereRhondda Cynon Taf
Born in the UK98%96.3%
Born outside the UK2%3.7%

Highest qualification

HereRhondda Cynon Taf
No qualifications25.3%24.2%
Level 4 qualifications and above24.7%26.7%
Level 2 qualifications16.6%15%
Level 3 qualifications15.3%16.8%
Level 1 and entry level qualifications9.2%9.4%
Apprenticeship6.4%5.1%
Other qualifications2.4%2.7%

General health

HereRhondda Cynon Taf
Very good health38.8%44.5%
Good health31.9%31.7%
Fair health18.7%15.5%
Bad health7.3%6.3%
Very bad health3.2%1.9%

Cars or vans per household

HereRhondda Cynon Taf
1 car or van in household45.1%41.8%
No cars or vans in household23.4%22.2%
2 cars or vans in household23.4%26.6%
3 or more cars or vans in household8.1%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 Trem Y Dyffryn

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Noise, radon and ground hazards

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Planning applications near Trem Y Dyffryn

Recent planning applications around Trem Y Dyffryn from the council's planning register. Choose how far to look:

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Council tax here

Rhondda Cynon Taf Band D is £2,289 a year (Band A £1,526). See every band.

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