30 Coplestone Street, Mountain Ash, CF45 3LY is a freehold terraced property built before 1900. The property offers approximately 1,012 square feet of living space. In this location, properties of similar size usually have three bedrooms.

The estimated current market value of the property is £176,405 , which equates to approximately £174 per square foot. It was last sold on 3 Feb 2015 for £95,000. Since then, the value has increased by £81,405, representing a 85.7% increase, or approximately 7.5% per year.

The current estimated value of £176,405 is:

  • 27.1% higher than the average property price on Coplestone Street
  • 35.8% higher than the average in the CF45 3LY postcode area
  • and 30.5% higher than the average price for Mountain Ash as a whole

This property has had 2 EPC inspections with recorded tenure information. It was recorded as owner-occupied both times. This suggests the property has typically been lived in by its owners, which often reflects longer-term residency and more consistent maintenance.

At the most recent EPC inspection on 20 April 2026, the property was recorded as owner-occupied.

View sold house prices in CF45 3LY

Building approximate location

About Property

Type
Terraced House
Built
before 1900
Interior Size
1012 sq ft
Tenure
Freehold
Price (estimate)
£176,405
Price Per sq ft (estimate)
£174
Bedroom Count (estimate)
3 bedrooms

EPC Summary

30 Coplestone Street, Mountain Ash, Rhondda Cynon Taff, CF45 3LY has an Energy Performance Certificate (EPC) rating of D, based on the latest assessment carried out on 20 Apr 2026.

This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The windows are high performance glazing.

The previous EPC assessment was conducted on 6 Nov 2014. The rating of D remains the same, but the energy efficiency score improved by 11.5%.

Since the previous assessment, several changes were observed:

  • The roof construction or insulation changed from pitched, 150 mm loft insulation to pitched, 200 mm loft insulation, with no change in energy efficiency (good).
  • The wall energy efficiency changing from poor to very poor, with the construction or insulation remaining sandstone, as built, no insulation (assumed).
  • The windows were upgraded from fully double glazed to high performance glazing.
  • The lighting was changed from low energy lighting in 22% of fixed outlets to below average lighting efficiency, with no change in efficiency (poor).
Heating Type
Boiler and radiators, mains gas
Good
Hot Water
From main system
Good
Roof
Pitched, 200 mm loft insulation
Good
Walls
Sandstone, as built, no insulation (assumed)
Very Poor
Windows
High performance glazing
Average
Lighting
Below average lighting efficiency
Poor

Compared to CF45 3LY

10 th / 28
Price Rank
36% higher than average
17 th / 22
Size Rank
6% smaller than average
5 th / 22
Price Per Sq FT Rank
44% higher than average

Sale History

Today
£176,405
streetscan.co.uk estimate
+86 %
3 Feb 2015
£95,000
Freehold
+280 %
27 Feb 2004
£25,000
Freehold

Flood Risk for this Property

Flood risk from rivers and the sea
Very low flood risk
Flood risk from surface water
Very low flood risk
Surface water flood hazard
No mapped risk

* Results are based on Environment Agency flood risk mapping for the property UPRN where available. They are indicative and should not be treated as a site-specific flood survey.

Flood risk from rivers and the sea

This property has very low flood risk from rivers and the sea.

River and sea flooding includes flooding caused by overflowing rivers, estuaries, tidal waters and coastal surges.

Flood risk from surface water

This property has very low surface water flood risk.

Surface water flooding can happen when heavy rainfall overwhelms drains, roads, gardens or other hard surfaces.

Flood depth indicators

Rivers and Sea
  • 0.2m depth No mapped risk
  • 0.3m depth No mapped risk
  • 0.6m depth No mapped risk
  • 0.9m depth No mapped risk
  • 1.2m depth No mapped risk
Surface Water
  • 0.2m depth No mapped risk
  • 0.3m depth No mapped risk
  • 0.6m depth No mapped risk
  • 0.9m depth No mapped risk
  • 1.2m depth No mapped risk

Area Insights

Similar Properties Sold Nearby

rooms: 4
size: 1066 sq ft
sale price: £145,000
sale date: 28 Jul 2025
rooms: 4
size: 1033 sq ft
sale price: £116,500
sale date: 21 May 2025
rooms: 5
size: 1076 sq ft
sale price: £100,000
sale date: 7 Feb 2025
rooms: 5
size: 1087 sq ft
sale price: £73,000
sale date: 3 Feb 2025
rooms: 4
size: 1055 sq ft
sale price: £112,500
sale date: 1 Feb 2024

Data Sources

The property at 30 Coplestone Street, Mountain Ash, CF45 3LY appears two times in HM Land Registry records, with the latest transaction recorded on 3 Feb 2015. It also has two Energy Performance Certificate (EPC) records, the earliest dating back to 20 Apr 2026. We use this information to estimate the property's characteristics, flood risk profile and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0 .

StreetScan.co.uk is not affiliated with, endorsed by, or associated with HM Land Registry, DESNZ, MHCLG, Defra or the Environment Agency.


Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure that the information provided on this website is current and accurate. However, no warranties or representations are made regarding its completeness, accuracy, suitability or reliability. Property values, flood risk assessments and other derived information are estimates based on publicly available datasets and should not be relied upon as professional, legal, surveying, environmental, financial or insurance advice. StreetScan.co.uk expressly disclaims all liability for any loss, damage, cost or expense arising directly or indirectly from the use of, or reliance upon, information provided on this website.