Our Data Sources
4, Mostyn Square, Cardiff has 2 entries in the Land Registry , most recently in April 2021 and a single entry in the EPC database dated December 2020.
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
In very good condition, we estimate 4, Mostyn Square, Cardiff would be worth £359,508, with a potential rental value of £1,799 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £318,422, with a rental value of £1,593 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
4, Mostyn Square, Cardiff occupies a 102 m2 plot as recorded by HM Land Registry.
Of the 40 other houses in this postcode, 30 have recorded plot sizes, and this one ranks as the 30th largest.
Energy Efficiency
4, Mostyn Square, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 18 Dec 2020.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
4, Mostyn Square, Cardiff last changed hands on 26th April 2021, selling for £265,000. 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 25.8% since April 2021.
- Sold Apr 2021£265,000
- Sold Aug 2009£185,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 202 sales of comparable properties within 630 metres of 4, Mostyn Square, Cardiff across the last 2 years.
Most recently, 41, Mostyn Square, Cardiff, CF14 5FE, a freehold house, sold at £365,000 on the 21st November 2025.
Read more about house prices in CF14.
- Sold Nov 2025£365,000 | 3 Bed House41, Mostyn Square, Cardiff, CF14 5FE41, Mostyn Square, Cardiff, CF14 5FE
- Sold Nov 2023£347,000 | 3 Bed House5, Mostyn Square, Cardiff, CF14 5FE5, Mostyn Square, Cardiff, CF14 5FE
- Sold May 2021£265,000 | 3 Bed House6, Mostyn Square, Cardiff, CF14 5FE6, Mostyn Square, Cardiff, CF14 5FE
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 4, Mostyn Square, Cardiff as the 36th largest and the 33rd most expensive of the 41 addresses on Mostyn Square, Llanishen, Cardiff, CF14.
Against the CF14 postcode district average, it is £30k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Ty Glas|300 m away
- Birchgrove|400 m away
- Rhiwbina|1.1 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
