Our Data Sources
18, Lon Penllyn, Cardiff has 41 entries in the Land Registry, most recently in April 2026 and a single entry in the EPC database dated December 2025.
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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
In very good condition, we estimate 18, Lon Penllyn, Cardiff would be worth £460,381, with a potential rental value of £1,814 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £407,766, with a rental value of £1,607 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
18, Lon Penllyn, Cardiff occupies a 319 m2 plot as recorded by HM Land Registry.
Of the 25 other houses in this postcode, 24 have recorded plot sizes, and this one ranks as the 13th largest.
Energy Efficiency
18, Lon Penllyn, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 15 Dec 2025.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
18, Lon Penllyn, Cardiff last changed hands on 16th April 2026, selling for £407,500. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 4 times since 1995.
The market for similar properties has dropped by 7.0% since April 2026.
- Sold Apr 2026£407,500
- Sold Aug 2010£273,000
- Sold Oct 2002£184,200
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 255 sales of comparable properties within 580 metres of 18, Lon Penllyn, Cardiff since 2020.
Most recently, 75, Kyle Avenue, Cardiff, CF14 1SR, a freehold house, sold at £442,500 on the 8th May 2026.
Read more about house prices in CF14.
- Sold May 2026£442,500 | 3 Bed House75, Kyle Avenue, Cardiff, CF14 1SR75, Kyle Avenue, Cardiff, CF14 1SR
- Sold Feb 2026£462,000 | 3 Bed House74, Kyle Avenue, Cardiff, CF14 1SS74, Kyle Avenue, Cardiff, CF14 1SS
- Sold Feb 2026£443,000 | 4 Bed House3, The Graylands, Cardiff, CF14 6AS3, The Graylands, Cardiff, CF14 6AS
- Sold Dec 2025£387,500 | 4 Bed House11, Porthamal Gardens, Cardiff, CF14 6AH11, Porthamal Gardens, Cardiff, CF14 6AH
- Sold Nov 2025£413,000 | 4 Bed House15, Ty Wern Avenue, Cardiff, CF14 6AW15, Ty Wern Avenue, Cardiff, CF14 6AW
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 £428,435, ranging from £367,419 to £488,253.
- 20 Lon Penllyn
3 Bed House | 18 m | Est. Value: £440,640
- 14 Lon Penllyn
3 Bed House | 24 m | Est. Value: £380,828
- 12 Lon Penllyn
3 Bed House | 33 m | Est. Value: £367,419
- 20 Leamington Road
3 Bed House | 33 m | Est. Value: £474,053
- 22 Leamington Road
3 Bed House | 34 m | Est. Value: £447,908
Location Comparison
Our analysis of the public data ranks 18, Lon Penllyn, Cardiff as the 10th largest and the 10th most expensive of the 25 addresses on Lon Penllyn, Cardiff, CF14.
Against the CF14 postcode district average, it is £66k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Rhiwbina|300 m away
- Whitchurch (Cardiff)|700 m away
- Birchgrove|700 m away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
