Our Data Sources
17A, Glenboi, Mountain Ash has 2 entries in the Land Registry, most recently in June 2016 and a single entry in the EPC database dated September 2011.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 17A, Glenboi, Mountain Ash would be worth £335,182, with a potential rental value of £1,485 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £296,875, with a rental value of £1,315 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
17A, Glenboi, Mountain Ash occupies a 673 m2 plot as recorded by HM Land Registry.
Of the 44 other houses in this postcode, 30 have recorded plot sizes, and this one ranks as the 3rd largest.
Energy Efficiency
17A, Glenboi, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 13 Sep 2011.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
17A, Glenboi, Mountain Ash last changed hands on 7th June 2016, selling for £165,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 22.9% since June 2016.
- Sold Jun 2016£165,000
- Sold Nov 2011£168,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 14 sales of comparable properties within 1.2 kilometres of 17A, Glenboi, Mountain Ash since 2007.
Most recently, Brynteg, High Street, Mountain Ash, CF45 3PB, a freehold house, sold at £275,000 on the 12th February 2026.
Read more about house prices in CF45.
- Sold Feb 2026£275,000 | 4 Bed HouseBrynteg, High Street, Mountain Ash, CF45 3PBBrynteg, High Street, Mountain Ash, CF45 3PB
- Sold Jun 2025£299,950 | 4 Bed House1, Low Row, Mountain Ash, CF45 4DL1, Low Row, Mountain Ash, CF45 4DL
- Sold Jul 2024£100,000 | 4 Bed House3, Trem Y Dyffryn, Mountain Ash, CF45 4AQ3, Trem Y Dyffryn, Mountain Ash, CF45 4AQ
- Sold Oct 2023£272,500 | 4 Bed House1, Middle Row, Mountain Ash, CF45 4DN1, Middle Row, Mountain Ash, CF45 4DN
- Sold Nov 2022£146,950 | 4 Bed HouseFrondeg, High Street, Mountain Ash, CF45 3PBFrondeg, High Street, Mountain Ash, CF45 3PB
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £141,747, ranging from £40,680 to £326,012.
- 7 Boi Close
3 Bed House | 33 m | Est. Value: £169,597
- 1 Fernhill
3 Bed Flat | 39 m | Est. Value: £43,657
- 3 Fernhill
2 Bed Flat | 39 m | Est. Value: £40,680
- 4 Fernhill
3 Bed Flat | 39 m | Est. Value: £42,045
- 2 Fernhill
3 Bed Flat | 39 m | Est. Value: £42,045
Location Comparison
Our analysis of the public data ranks 17A, Glenboi, Mountain Ash as the 11th largest and the 6th most expensive of the 48 addresses on Glenboi, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £159k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Fernhill|100 m away
- Mountain Ash|1.5 km away
- Cwmbach|2.1 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












