Our Data Sources
166, Mortimer Avenue, Cardiff has 2 entries in the Land Registry , most recently in August 2025 and a single entry in the EPC database dated June 2018.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 166, Mortimer Avenue, Cardiff is in very good condition we estimate a sale value of £291,631 and a rental value of £1,454 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £258,302 and a rental value of £1,288 per month.
Plot Size
According to data from HM Land Registry, 166, Mortimer Avenue, Cardiff sits on a plot of 178 m2.
We have plot size data on 51 out of 52 other houses in the postcode and 166, Mortimer Avenue, Cardiff sits on the 19th largest plot.
Energy Efficiency
166, Mortimer Avenue, Cardiff has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 19 Jun 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
According to HM Land Registry, 166, Mortimer Avenue, Cardiff was last sold on 4th August 2025 for £289,950 and was recorded as a freehold house.
The property has had 2 sales since 1995.
Since August 2025, the market for similar properties has dropped by 23.0%.
- Sold Aug 2025£289,950
- Sold Jun 2018£219,995
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 166, Mortimer Avenue, Cardiff within a radius of 770 metres over the last 2 years.
The most recent example is 186, Mortimer Avenue, Cardiff, CF3 6YF, a freehold house which sold for £290,000 on the 21st November 2025.
Read more about house prices in CF3.
- Sold Nov 2025£290,000 | 3 Bed House186, Mortimer Avenue, Cardiff, CF3 6YF186, Mortimer Avenue, Cardiff, CF3 6YF
- Sold Oct 2024£285,000 | 3 Bed House126, Mortimer Avenue, Cardiff, CF3 6YF126, Mortimer Avenue, Cardiff, CF3 6YF
- Sold Jun 2024£270,000 | 3 Bed House158, Mortimer Avenue, Cardiff, CF3 6YF158, Mortimer Avenue, Cardiff, CF3 6YF
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Mortimer Avenue, Old St. Mellons, Cardiff, CF3 has a total of 108 addresses. According to our analysis of all the public data, 166, Mortimer Avenue, Cardiff is the 75th largest and the 77th most expensive property on the street.
When compared to the postcode district it is £22k more expensive than the average property in CF3.
More reading links
Schools Nearby
Public Transport Nearby
- 4.0kmLlanishen
- 4.3kmLisvane & Thornhill
- 4.5kmHeath High Level
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.
