Our Data Sources
21, Llys Illtern, Cardiff has a single entry in the Land Registry from December 2020 and a single entry in the EPC database dated November 2020.
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 21, Llys Illtern, Cardiff is in very good condition we estimate a sale value of £316,289 and a rental value of £1,508 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £280,141 and a rental value of £1,336 per month.
Plot Size
According to data from HM Land Registry, 21, Llys Illtern, Cardiff sits on a plot of 221 m2.
We have plot size data on 13 out of 41 other houses in the postcode and 21, Llys Illtern, Cardiff sits on the 6th largest plot.
Energy Efficiency
21, Llys Illtern, Cardiff has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 20 Nov 2020.
The property is connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
According to HM Land Registry, 21, Llys Illtern, Cardiff was last sold on 14th December 2020 for £200,000 and was recorded as a freehold house.
The property has only had this single sale since 1995.
Since December 2020, the market for similar properties has risen by 13.3%.
- Sold Dec 2020£200,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 16 sales of properties similar to 21, Llys Illtern, Cardiff within a radius of 2.0 kilometres since 2010.
The most recent example is 25, Parc Y Fro, Cardiff, CF15 9SD, a freehold house which sold for £362,500 on the 27th March 2026.
Read more about house prices in CF5.
- Sold Mar 2026£362,500 | 2 Bed House25, Parc Y Fro, Cardiff, CF15 9SD25, Parc Y Fro, Cardiff, CF15 9SD
- Sold Nov 2025£240,000 | 3 Bed House46, Gwern Catherine, Cardiff, CF5 6GD46, Gwern Catherine, Cardiff, CF5 6GD
- Sold Nov 2025£240,000 | 3 Bed House15, Llys Illtern, Cardiff, CF5 6GB15, Llys Illtern, Cardiff, CF5 6GB
- Sold Feb 2024£239,950 | 3 Bed House5, Trem Y Graig, Cardiff, CF5 6GL5, Trem Y Graig, Cardiff, CF5 6GL
- Sold Jul 2023£262,500 | 3 Bed House18, Llys Caradog, Cardiff, CF15 9JP18, Llys Caradog, Cardiff, CF15 9JP
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £293,406, ranging from £191,284 to £427,188.
- 19 Llys Illtern
3 Bed House | 4 m | Est. Value: £294,509
- 17 Llys Illtern
3 Bed House | 15 m | Est. Value: £296,926
- 15 Llys Illtern
3 Bed House | 18 m | Est. Value: £315,228
- 23 Llys Illtern
3 Bed House | 22 m | Est. Value: £381,241
- 37 Llys Illtern
4 Bed House | 23 m | Est. Value: £427,188
Location Comparison
Llys Illtern, Capel Llanilltern, Cardiff, CF5 has a total of 47 addresses. According to our analysis of all the public data, 21, Llys Illtern, Cardiff is the 39th largest and the 39th most expensive property on the street.
When compared to the postcode district it is £4k more expensive than the average property in CF5.
More reading links
Schools Nearby
Public Transport Nearby
- Radyr|4.3 km away
- Taffs Well|4.5 km away
- Danescourt|5.5 km away
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.












