Our Data Sources
5, Mostyn Square, Cardiff has 3 entries in the Land Registry , most recently in November 2023 and a single entry in the EPC database dated November 2018.
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 5, Mostyn Square, Cardiff would be worth £364,639, with a potential rental value of £1,807 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £322,966, with a rental value of £1,601 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
5, Mostyn Square, Cardiff occupies a 129 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 25th largest.
Energy Efficiency
5, Mostyn Square, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 07 Nov 2018.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
5, Mostyn Square, Cardiff last changed hands on 8th November 2023, selling for £347,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 3 times since 1995.
The market for similar properties has risen by 9.8% since November 2023.
- Sold Nov 2023£347,000
- Sold Jan 2019£263,500
- Sold Oct 2008£205,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 222 sales of comparable properties within 620 metres of 5, Mostyn Square, Cardiff across the last 2 years.
Most recently, 3, Mostyn Square, Cardiff, CF14 5FE, a freehold house, sold at £338,000 on the 28th November 2025.
Read more about house prices in CF14.
- Sold Nov 2025£338,000 | 4 Bed House3, Mostyn Square, Cardiff, CF14 5FE3, Mostyn Square, Cardiff, CF14 5FE
- Sold Nov 2025£365,000 | 3 Bed House41, Mostyn Square, Cardiff, CF14 5FE41, Mostyn Square, Cardiff, CF14 5FE
- Sold Apr 2021£265,000 | 3 Bed House4, Mostyn Square, Cardiff, CF14 5FE4, 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 5, Mostyn Square, Cardiff as the 26th largest and the 28th most expensive of the 41 addresses on Mostyn Square, Llanishen, Cardiff, CF14.
Against the CF14 postcode district average, it is £25k 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.
