Our Data Sources
11, Glanlay Street, Mountain Ash has a single entry in the Land Registry from February 2026 and a single entry in the EPC database dated November 2025.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 11, Glanlay Street, Mountain Ash, we estimate a market value of £128,780 and a rental value of £831 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £114,062 and £736 per month respectively.
Plot Size
HM Land Registry records the plot of land for 11, Glanlay Street, Mountain Ash as measuring 107 m2.
That makes it the 10th largest plot in the postcode, where 44 of the 49 other houses have recorded plot data.
Energy Efficiency
11, Glanlay Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 11 Nov 2025.
The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 11, Glanlay Street, Mountain Ash completed on 5th February 2026 at £95,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 27.5% over the period since February 2026.
- Sold Feb 2026£95,000
Similar Properties Sold Nearby
Since 2020 234 properties similar to 11, Glanlay Street, Mountain Ash have sold within a radius of 1.0 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 27th March 2026, was 32, Rheola Street, Mountain Ash, CF45 3TB, a freehold house which sold for £150,000.
Read more about house prices in CF45.
- Sold Mar 2026£150,000 | 3 Bed House32, Rheola Street, Mountain Ash, CF45 3TB32, Rheola Street, Mountain Ash, CF45 3TB
- Sold Nov 2025£135,000 | 3 Bed House9, Cynon Terrace, Mountain Ash, CF45 3SU9, Cynon Terrace, Mountain Ash, CF45 3SU
- Sold Nov 2025£155,000 | 3 Bed House60, Morris Avenue, Mountain Ash, CF45 3TW60, Morris Avenue, Mountain Ash, CF45 3TW
- Sold May 2025£69,000 | 3 Bed House11, Morris Avenue, Mountain Ash, CF45 3TW11, Morris Avenue, Mountain Ash, CF45 3TW
- Sold May 2025£98,000 | 3 Bed House1, Morris Avenue, Mountain Ash, CF45 3TW1, Morris Avenue, Mountain Ash, CF45 3TW
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 £111,545, ranging from £93,428 to £119,127.
- 9 Glanlay Street
2 Bed House | 5 m | Est. Value: £93,428
- 13 Glanlay Street
3 Bed House | 6 m | Est. Value: £114,738
- 15 Glanlay Street
3 Bed House | 11 m | Est. Value: £118,408
- 5 Glanlay Street
3 Bed House | 16 m | Est. Value: £115,482
- 12 Glanlay Street
3 Bed House | 19 m | Est. Value: £113,231
Location Comparison
Of the 87 addresses on Glanlay Street, Mountain Ash, CF45, 11, Glanlay Street, Mountain Ash comes out as the 19th largest and the 18th most expensive in our analysis of the public data.
It is also £38k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- Penrhiwceiber|300 m away
- Mountain Ash|1.9 km away
- Merthyr Vale|2.7 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
