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House Prices in CF45

The average house price in CF45 (Mountain Ash) is £139,083 using HM Land Registry data.

The average property price increased by £26,607 (29.36%) over the last 5 years and increased by £5,319 (4.75%) over the last 12 months.

Over the last year, there were 159 residential property sales – a decrease of 68 transactions (-42.77%) relative to the previous year. The majority of house sales (42) were in the £108,000 - £136,000 range. Then came properties in the £136,000 - £164,000 range, where 38 were sold within this price bracket.

Excluding fall throughs, properties are taking an average of 44 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 35 new estate agency instructions, 14 agreed home sales and 17 property price reductions.

5-Year Average Property Prices in CF45 (Mountain Ash)

29.36%

Property prices in CF45 (Mountain Ash) increased by 29.36% 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 CF45 (Mountain Ash) Over the Last Year

4.75%

Property prices in CF45 (Mountain Ash) increased by 4.75% 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 CF45 (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 41 to 60 days, the broad evidence suggests that the market is reasonably slow moving. Although some sellers in your postcode may be willing to wait up to 9 weeks, this data would suggest that estate agents may be overvaluing properties. In such scenarios, some vendors may either choose to wait for the market to pick up (which may result in 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 CF45 (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 CF45 (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 CF45 (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 CF45 (Mountain Ash) Postcode since 1995

Using HM Land Registry data, this chart displays average annual house prices in the CF45 postcode area since 1995.

Recent Sales in CF45 (Mountain Ash)

Address	Initial Price	Sold Price	Price Change	First Listed Date	Sold Date	Days to Sell
31 William Street, Mountain Ash, CF45 4RW	£115,000	£106,000	-£9,000	31 Mar 2026	16 Jul 2026	107 Days
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
38 Greenfield Terrace, Mountain Ash, CF45 4TL	£235,000	£235,000	£0	27 Mar 2026	19 Jun 2026	84 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
31 Gertrude Street, Mountain Ash, CF45 4RL	£170,000	£170,000	£0	09 Jan 2026	22 May 2026	133 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
9 Grovers Field, Mountain Ash, CF45 4PP	£263,000	£235,000	-£28,000	26 Aug 2025	14 May 2026	261 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

Most Expensive Streets in CF45 (Mountain Ash)

Postcode	Street	Area	Average	No. of Sales
CF45 4ES	Lon-y-felin, Cefnpennar	Mountain Ash	£423,333	3
CF45 4NU	Salisbury Road	Mountain Ash	£385,666	3
CF45 4YA	Alexandra Place, Abercynon	Mountain Ash	£345,666	3
CF45 4AQ	Trem Y Dyffryn	Mountain Ash	£298,750	6
CF45 4PP	Grovers Field	Mountain Ash	£281,500	4
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	Mountain Ash	£213,333	3

Least Expensive Streets in CF45 (Mountain Ash)

Postcode	Street	Area	Average	No. of Sales
CF45 3DA	Mount Pleasant Place	Mountain Ash	£65,333	3
CF45 3UU	Woodfield Terrace, Penrhiwceiber	Mountain Ash	£67,000	4
CF45 3YL	Park Street, Penrhiwceiber	Mountain Ash	£67,400	5
CF45 3PE	High Street	Mountain Ash	£68,611	9
CF45 3YP	Ty'r Felin Street, Penrhiwceiber	Mountain Ash	£71,000	5
CF45 3EF	Fernhill	Mountain Ash	£72,000	3
CF45 3YG	Dilwyn Street, Penrhiwceiber	Mountain Ash	£72,562	4
CF45 3AP	Victoria Street	Mountain Ash	£77,924	8
CF45 4YE	Pentwyn Avenue, Tyntetown	Mountain Ash	£78,333	6
CF45 3SG	Penrhiwceiber Road, Penrhiwceiber	Mountain Ash	£78,750	4