21, Y Deri Duon
21, Y Deri Duon
Description & Estimates







21, Y Deri Duon, Cardiff is recorded publicly as a modern freehold house across 1,119 ft2 of internal area.
Locally, houses of this size normally have 3 bedrooms with a garden.
Our estimate of the sale value of 21, Y Deri Duon, Cardiff is £466,837 and its rental estimate is £1,756 per month, given the available information and assuming reasonable condition.
Y Deri Duon, Lisvane, Cardiff, CF14 falls within the CF14 postal district.
Our Data Sources
21, Y Deri Duon, Cardiff has a single entry in the Land Registry from June 2023 and a single entry in the EPC database dated June 2023.
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 21, Y Deri Duon, Cardiff, we estimate a market value of £490,179 and a rental value of £1,844 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £434,158 and £1,633 per month respectively.
Recent Market Change
Over the last year, 21, Y Deri Duon, Cardiff has seen its estimated sale value drop by £2,285 (0.5%) and its estimated rental value rise by £57 per month (3.3%). This results in an estimated gross rental yield of 4.5%.
Energy Efficiency
21, Y Deri Duon, Cardiff has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 09 Jun 2023.
The property is not connected to mains gas and has ffenestri perfformiad uchel. It is heated using Bwyler a rheiddiaduron, nwy prif gyflenwad.
Sold Prices
The most recent sale of 21, Y Deri Duon, Cardiff completed on 29th June 2023 at £462,995 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 dropped by 17.8% over the period since June 2023.
- Sold Jun 2023£462,995
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 21, Y Deri Duon, Cardiff have sold within a radius of 930 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 5th September 2025, was 45, Y Deri Duon, Cardiff, CF14 0AA, a freehold house which sold for £493,000.
Read more about house prices in CF14.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 67 addresses on Y Deri Duon, Lisvane, Cardiff, CF14, 21, Y Deri Duon, Cardiff comes out as the 57th largest and the 55th most expensive in our analysis of the public data.
It is also £102k more expensive than the average property across the CF14 district.
More reading links
Schools Nearby
Public Transport Nearby
From 21, Y Deri Duon, Cardiff, the nearest station is Llanishen, 1.4 kilometres away.
- 1.4kmLlanishen
- 1.9kmLisvane & Thornhill
- 2.5kmHeath High Level
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.

