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Mountain Ash House Prices

The average house price in Mountain Ash is £145,700 using HM Land Registry data.

The average property price increased by £29,865 (26.33%) over the last 5 years and increased by £5,971 (4.35%) over the last 12 months.

Over the last year, there were 105 residential property sales – a decrease of 44 transactions (-41.90%) relative to the previous year. The majority of house sales (34) were in the £108,000 - £136,000 range. Then came properties in the £136,000 - £164,000 range, where 25 were sold within this price bracket.

Excluding fall throughs, properties are taking an average of 39 days to sell (from being listed to completion) and the average difference between asking and sold prices is £-7,749 (-4%).

In Aug 2026, there were 23 new estate agency instructions, 10 agreed home sales and 12 property price reductions.

5-Year Average Property Prices in Mountain Ash

26.33%

Property prices in Mountain Ash increased by 26.33% 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

4.35%

Property prices in Mountain Ash increased by 4.35% 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 - Aug 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 21 to 40 days, the broad evidence suggests that properties are selling reasonably quickly after being initially advertised and the market is reasonably healthy. If you are prepared to wait to up to 6 weeks, and you are sure that your property is priced realistically, you should get an offer within this timeframe.

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
40 Bron-y-deri, Mountain Ash, CF45 4LL	£220,000	£220,000	£0	24 Apr 2026	06 Jul 2026	73 Days
24 Eva Street, Mountain Ash, CF45 3LF	£135,000	£135,000	£0	10 Apr 2026	29 Jun 2026	80 Days
42 Bryn Ifor, Mountain Ash, CF45 3AB	£115,000	£107,500	-£7,500	31 Mar 2026	29 Jun 2026	90 Days
25 Clarence Street, Mountain Ash, CF45 3BB	£135,000	£135,000	£0	19 Mar 2026	19 Jun 2026	92 Days
72 Consort Street, Mountain Ash, CF45 3AU	£149,950	£145,000	-£4,950	20 Mar 2026	19 Jun 2026	91 Days
26 Arnold Street, Mountain Ash, CF45 4LF	£149,000	£138,500	-£10,500	04 Mar 2026	12 Jun 2026	100 Days
15 Cliff Street, Mountain Ash, CF45 3LE	£110,000	£103,000	-£7,000	17 Oct 2025	10 Jun 2026	236 Days
41 Church Street, Penrhiwceiber, Mountain Ash, CF45 3YB	£122,995	£120,000	-£2,995	17 Feb 2026	01 Jun 2026	104 Days
16 Commercial Street, Mountain Ash, CF45 3PS	£150,000	£122,000	-£28,000	20 Oct 2025	29 May 2026	221 Days
49 Park Street, Penrhiwceiber, Mountain Ash, CF45 3YW	£90,000	£90,000	£0	01 Dec 2025	29 May 2026	179 Days
18 Forest View, Mountain Ash, CF45 3DU	£145,000	£138,000	-£7,000	21 Nov 2025	29 May 2026	189 Days
33 Dover Street, Mountain Ash, CF45 3HU	£115,000	£115,000	£0	21 Nov 2025	22 May 2026	182 Days
114 Penrhiwceiber Road, Penrhiwceiber, Mountain Ash, CF45 3SL	£130,000	£120,000	-£10,000	17 Nov 2025	15 May 2026	179 Days
12 Beckett Street, Mountain Ash, CF45 4AW	£155,000	£150,000	-£5,000	09 May 2025	08 May 2026	364 Days
22 Ty Tenby, Campbell Terrace, Mountain Ash, CF45 4AE	£245,000	£235,000	-£10,000	26 Dec 2025	08 May 2026	133 Days
26 Woodland Terrace, Mountain Ash, CF45 3RF	£135,000	£130,000	-£5,000	22 Oct 2025	01 May 2026	191 Days
14 Lyndhurst Street, Mountain Ash, CF45 4AP	£160,000	£157,500	-£2,500	18 Sep 2025	13 Apr 2026	207 Days
Casa Jade, Troed-y-rhiw Road, Mountain Ash, CF45 4BQ	£449,995	£435,000	-£14,995	24 Jul 2025	10 Apr 2026	260 Days
4 Glamorgan Street, Perthcelyn, Mountain Ash, CF45 3HX	£105,000	£102,000	-£3,000	15 Dec 2025	07 Apr 2026	113 Days
13 Gorsedd Street, Mountain Ash, CF45 3LR	£160,000	£155,000	-£5,000	21 Oct 2025	31 Mar 2026	161 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	£249,250	4
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 4DN	Middle Row	Cwmpennar	£213,333	3
CF45 3DU	Forest View	Mountain Ash	£210,302	18
CF45 3PT	Aberdare Road	Mountain Ash	£208,349	5
CF45 4FD	Ffordd Y Glowyr	Mountain Ash	£198,532	17

Least Expensive Streets in Mountain Ash

Postcode	Street	Area	Average	No. of Sales
CF45 3DA	Mount Pleasant Place	Mountain Ash	£65,333	3
CF45 3UU	Woodfield Terrace	Penrhiwceiber	£67,000	4
CF45 3YL	Park Street	Penrhiwceiber	£67,400	5
CF45 3PE	High Street	Mountain Ash	£68,611	9
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 3AP	Victoria Street	Mountain Ash	£77,924	8
CF45 3SG	Penrhiwceiber Road	Penrhiwceiber	£78,750	4
CF45 3TJ	Penybryn Terrace	Penrhiwceiber	£79,400	5