Our Data Sources
18, Sunnyside, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated February 2013.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate 18, Sunnyside, Mountain Ash would be worth £134,874, with a potential rental value of £855 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £119,460, with a rental value of £757 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
18, Sunnyside, Mountain Ash occupies a 416 m2 plot as recorded by HM Land Registry.
Of the 19 other houses in this postcode, 15 have recorded plot sizes, and this one ranks as the 3rd largest.
Energy Efficiency
18, Sunnyside, Mountain Ash has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 02 Feb 2013.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 175 sales of comparable properties within 1.6 kilometres of 18, Sunnyside, Mountain Ash across the last 2 years.
Most recently, 10, Pentwyn Avenue, Mountain Ash, CF45 4YF, a freehold house, sold at £83,000 on the 22nd April 2026.
Read more about house prices in CF45.
- Sold Apr 2026£83,000 | 3 Bed House10, Pentwyn Avenue, Mountain Ash, CF45 4YF10, Pentwyn Avenue, Mountain Ash, CF45 4YF
- Sold Aug 2022£95,000 | 3 Bed House13, Sunnyside, Mountain Ash, CF45 4DJ13, Sunnyside, Mountain Ash, CF45 4DJ
- Sold Sep 2017£110,000 | 3 Bed House12, Sunnyside, Mountain Ash, CF45 4DJ12, Sunnyside, Mountain Ash, CF45 4DJ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 18, Sunnyside, Mountain Ash as the 12th largest and the 11th most expensive of the 19 addresses on Sunnyside, Abercynon, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £32k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Penrhiwceiber|1.4 km away
- Quakers Yard|1.6 km away
- Abercynon|2.2 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
