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Mountain Ash House Prices

The average house price in Mountain Ash is £175,499 using HM Land Registry data.

The average property price increased by £34,422 (31.88%) over the last 5 years and increased by £6,882 (5.08%) over the last 12 months.

Over the last year, there were 103 residential property sales – a decrease of 50 transactions (-48.54%) relative to the previous year. The majority of house sales (33) were in the £106,000 - £132,000 range. Then came properties in the £132,000 - £158,000 range, where 19 were sold within this price bracket.

Excluding fall throughs, properties are taking an average of 63 days to sell (from being listed to completion) and the average difference between asking and sold prices is £-6,539 (-4%).

In Apr 2026, there were 27 new estate agency instructions, 28 agreed home sales and 7 property price reductions.

5-Year Average Property Prices in Mountain Ash

31.88%

Property prices in Mountain Ash increased by 31.88% in last 5 years.

The trend shows the general price tendency over the last 5 years, ignoring all month-to-month fluctuations where anomalies - typically over or underpriced property sales - can skew results. These monthly variations typically do not have any long-term relevance.

We have used linear regression method. The volume of sales in a month is used to put more weight on months with a larger number of properties sold. Additionally, weighting decreases the impact of months with low sales volumes as well as the most recent month - which may consist of incomplete data. Such months have a higher variation of average sale values which may conceal the underlying trend.

From a statistical perspective, we use the least squares method to fit the trend line and weights are equal to the volume of sales squared. The volume of sales is not shown explicitly in the above plot. Also note the time lag for HM Land Registry data to appear (typically 2 to 3 months).

Average Property Prices in Mountain Ash Over the Last Year

5.08%

Property prices in Mountain Ash increased by 5.08% in last 12 months.

The trend shows the general price tendency over the last 12 months, ignoring all month-to-month fluctuations where anomalies - typically over or underpriced property sales - can skew results. These monthly variations typically do not have any long-term relevance.

Property Market Heat Gauge for Mountain Ash - Apr 2026

Our Property Market Heat Gauge looks at how long properties in your postcode district have been on the open market before being changed to sold 'Subject to Contract' ('STC') or 'Under Offer' on Rightmove (the UK's leading property portal).

At 61 to 80 days, the broad evidence suggests a slow moving market. This can often be due to estate agency over-valuations out of sync with the realities, a market slowdown or a combination of both. In such scenarios, some vendors may either choose to wait for the market to pick up (which may result in some relisting the property at a later date). Others simply reduce the price to a level that will entice more buyer interest or approach a sell house fast or auction company like Property Solvers.

Please note that this is not an indicator of how quickly property sales are taking to complete (i.e. to go through the whole conveyancing process). This measurement also does not take into account the risk of home sales falling through.

No. of New Instructions Over the Last 12 Months in Mountain Ash

Using local estate agency reported data, this chart illustrates the number of properties that have come on to the market.

No. of Agreed Home Sales Over the Last 12 Months in Mountain Ash

Using local estate agency reported data, this chart illustrates the number of property sales agreed. Note that these figures are not fully reflective of properties completed (sold and registered as such at HM Land Registry).

No. of Properties with Price Reductions in Mountain Ash

Using local estate agency reported data, this chart illustrates the number of properties which have been seen their prices dropped (typically due to a lack of buyer interest).

Average Annual House Prices in the Mountain Ash since 1995

Using HM Land Registry data, this chart displays average annual house prices in the Mountain Ash area since 1995.

Recent Property Sales in Mountain Ash

Address	Initial Price	Sold Price	Price Change	First Listed Date	Sold Date	Days to Sell
3 Glanlay Street, Penrhiwceiber, Mountain Ash, CF45 3TL	£130,000	£127,500	-£2,500	20 Nov 2025	20 Mar 2026	120 Days
59 Allen Street, Mountain Ash, CF45 4BB	£195,000	£189,998	-£5,002	15 Aug 2025	09 Mar 2026	206 Days
2 Ffordd Y Glowyr, Mountain Ash, CF45 4FD	£319,500	£309,500	-£10,000	04 Sep 2025	06 Mar 2026	183 Days
10 The Triangle, Mountain Ash, CF45 4BA	£164,950	£160,000	-£4,950	25 Jun 2025	20 Feb 2026	240 Days
12 Thomas Street, Mountain Ash, CF45 3BU	£150,000	£145,000	-£5,000	06 Dec 2025	20 Feb 2026	76 Days
24 Richmond Road, Mountain Ash, CF45 4AN	£165,000	£158,000	-£7,000	25 Jul 2025	17 Feb 2026	207 Days
6 Strand Street, Mountain Ash, CF45 4HG	£105,000	£105,000	£0	19 Aug 2025	13 Feb 2026	178 Days
43 Cilhaul Terrace, Llanwonno Road, Mountain Ash, CF45 3ND	£160,000	£157,000	-£3,000	24 Nov 2025	13 Feb 2026	81 Days
Brynteg, High Street, Mountain Ash, CF45 3PB	£279,950	£275,000	-£4,950	15 Aug 2025	12 Feb 2026	181 Days
Aberpennar Cottage, Dover Street, Mountain Ash, CF45 3HY	£142,500	£142,500	£0	29 Apr 2025	04 Feb 2026	281 Days
3 Gwernifor Street, Mountain Ash, CF45 3NA	£160,000	£150,000	-£10,000	15 Jul 2025	03 Feb 2026	203 Days
30 Penybryn Terrace, Penrhiwceiber, Mountain Ash, CF45 3TJ	£110,000	£100,000	-£10,000	04 Oct 2025	30 Jan 2026	118 Days
62 Cardiff Road, Mountain Ash, CF45 4HD	£114,950	£114,950	£0	19 May 2025	29 Jan 2026	255 Days
10 Ffordd Y Glowyr, Mountain Ash, CF45 4FD	£155,000	£155,000	£0	21 May 2025	08 Dec 2025	201 Days
28 Strand Street, Mountain Ash, CF45 4HG	£90,000	£88,000	-£2,000	14 Mar 2025	05 Dec 2025	266 Days
2 Blackberry Place, Cefnpennar, Mountain Ash, CF45 4EA	£119,950	£112,000	-£7,950	02 Sep 2025	05 Dec 2025	94 Days
8 Gwernifor Street, Mountain Ash, CF45 3NA	£195,000	£190,000	-£5,000	05 Jun 2025	21 Nov 2025	169 Days
29 Cliff Street, Mountain Ash, CF45 3LE	£125,000	£120,000	-£5,000	09 May 2025	14 Nov 2025	189 Days
100 Woodfield Terrace, Penrhiwceiber, Mountain Ash, CF45 3UT	£129,950	£120,000	-£9,950	29 Aug 2025	14 Nov 2025	77 Days
81 Duffryn Street, Mountain Ash, CF45 3HR	£115,000	£115,000	£0	09 May 2025	07 Nov 2025	182 Days

Most Expensive Streets in Mountain Ash

Postcode	Street	Area	Average	No. of Sales
CF45 4ES	Lon-y-felin	Cefnpennar	£423,333	3
CF45 4AQ	Trem Y Dyffryn	Mountain Ash	£298,750	6
CF45 4LL	Bron-y-deri	Mountain Ash	£259,000	3
CF45 3DN	Meadow Close	Mountain Ash	£235,000	3
CF45 4FF	Trem Y Mynydd	Mountain Ash	£220,166	3
CF45 4AL	Granville Terrace	Mountain Ash	£217,250	3
CF45 3DU	Forest View	Mountain Ash	£214,555	17
CF45 4AF	Austin Street	Mountain Ash	£201,248	4
CF45 4AR	Aber-ffrwd Road	Mountain Ash	£196,373	4
CF45 4FD	Ffordd Y Glowyr	Mountain Ash	£195,738	17

Least Expensive Streets in Mountain Ash

Postcode	Street	Area	Average	No. of Sales
CF45 3NF	Cwrt Llanwonno	Mountain Ash	£62,666	3
CF45 3YL	Park Street	Penrhiwceiber	£67,400	5
CF45 3PE	High Street	Mountain Ash	£67,850	10
CF45 3UU	Woodfield Terrace	Penrhiwceiber	£68,100	5
CF45 3YP	Ty'r Felin Street	Penrhiwceiber	£71,000	5
CF45 3EF	Fernhill	Mountain Ash	£72,000	3
CF45 3YG	Dilwyn Street	Penrhiwceiber	£72,562	4
CF45 3LE	Cliff Street	Mountain Ash	£76,166	6
CF45 3TJ	Penybryn Terrace	Penrhiwceiber	£76,428	7
CF45 3AP	Victoria Street	Mountain Ash	£77,043	9