Our Data Sources
139, Mortimer Avenue, Cardiff has 3 entries in the Land Registry , most recently in January 2026 and a single entry in the EPC database dated October 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
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 139, Mortimer Avenue, Cardiff, we estimate a market value of £247,676 and a rental value of £1,315 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £219,370 and £1,165 per month respectively.
Plot Size
HM Land Registry records the plot of land for 139, Mortimer Avenue, Cardiff as measuring 188 m2.
That makes it the 15th largest plot in the postcode, where 52 of the 56 other houses have recorded plot data.
Energy Efficiency
139, Mortimer Avenue, Cardiff has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 11 Oct 2018.
The property is not connected to mains gas and has high performance glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 139, Mortimer Avenue, Cardiff completed on 16th January 2026 at £255,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold 3 times.
Values of comparable properties have dropped by 17.7% over the period since January 2026.
- Sold Jan 2026£255,000
- Sold Oct 2022£248,000
- Sold Oct 2018£189,995
Similar Properties Sold Nearby
Over the past 2 years 261 properties similar to 139, Mortimer Avenue, Cardiff have sold within a radius of 780 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 12th July 2024, was 121, Mortimer Avenue, Cardiff, CF3 6YG, a freehold house which sold for £220,000.
Read more about house prices in CF3.
- Sold Jul 2024£220,000 | 2 Bed House121, Mortimer Avenue, Cardiff, CF3 6YG121, Mortimer Avenue, Cardiff, CF3 6YG
- Sold Jan 2022£233,000 | 2 Bed House143, Mortimer Avenue, Cardiff, CF3 6YG143, Mortimer Avenue, Cardiff, CF3 6YG
- Sold Oct 2018£189,995 | 2 Bed House141, Mortimer Avenue, Cardiff, CF3 6YG141, Mortimer Avenue, Cardiff, CF3 6YG
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 108 addresses on Mortimer Avenue, Old St. Mellons, Cardiff, CF3, 139, Mortimer Avenue, Cardiff comes out as the 98th largest and the 99th most expensive in our analysis of the public data.
It is also £22k less expensive than the average property across the CF3 district.
More reading links
Schools Nearby
Public Transport Nearby
- Llanishen|4.0 km away
- Lisvane & Thornhill|4.3 km away
- Heath High Level|4.5 km away
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
