Our Data Sources
Garth Llyn, Caerphilly has no records in the the Land Registry and a single entry in the EPC database dated November 2024.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Garth Llyn, Caerphilly would be worth £301,408, with a potential rental value of £1,574 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £266,961, with a rental value of £1,394 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
Garth Llyn, Caerphilly occupies a 450 m2 plot as recorded by HM Land Registry.
Of the 36 other houses in this postcode, 34 have recorded plot sizes, and this one ranks as the 4th largest.
Energy Efficiency
Garth Llyn, Caerphilly has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Nov 2024.
The property is connected to mains gas and has mostly double glazing. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 640 metres of Garth Llyn, Caerphilly across the last 2 years.
Most recently, 116, St. Christophers Drive, Caerphilly, CF83 1DE, a freehold house, sold at £332,500 on the 12th December 2025.
Read more about house prices in CF83.
- Sold Dec 2025£332,500 | 4 Bed House116, St. Christophers Drive, Caerphilly, CF83 1DE116, St. Christophers Drive, Caerphilly, CF83 1DE
- Sold Aug 2025£302,500 | 4 Bed House48, Heol Trecastell, Caerphilly, CF83 1AE48, Heol Trecastell, Caerphilly, CF83 1AE
- Sold Jun 2022£215,000 | 4 Bed House19, Heol Ganol, Caerphilly, CF83 1AS19, Heol Ganol, Caerphilly, CF83 1AS
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks Garth Llyn, Caerphilly as the 18th largest and the 12th most expensive of the 233 addresses on Nantgarw Road, Caerphilly, CF83.
Against the CF83 postcode district average, it is £58k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- 100mAber
- 900mEnerglyn & Churchill Park
- 900mCaerphilly
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.












