Our Data Sources
21, St. Martins Road, Caerphilly has no records in the Land Registry and a single entry in the EPC database dated January 2017.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate 21, St. Martins Road, Caerphilly would be worth £456,181, with a potential rental value of £1,951 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £404,046, with a rental value of £1,728 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
21, St. Martins Road, Caerphilly occupies a 200 m2 plot as recorded by HM Land Registry.
Of the 20 other houses in this postcode, 13 have recorded plot sizes, and this one ranks as the 12th largest.
Energy Efficiency
21, St. Martins Road, Caerphilly has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 05 Jan 2017.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 52 sales of comparable properties within 650 metres of 21, St. Martins Road, Caerphilly since 2011.
Most recently, 10, Warren Drive, Caerphilly, CF83 1HQ, a freehold house, sold at £472,000 on the 20th February 2026.
Read more about house prices in CF83.
- Sold Feb 2026£472,000 | 4 Bed House10, Warren Drive, Caerphilly, CF83 1HQ10, Warren Drive, Caerphilly, CF83 1HQ
- Sold Jan 2026£400,000 | 4 Bed House11, Redbrook Court, Caerphilly, CF83 1ED11, Redbrook Court, Caerphilly, CF83 1ED
- Sold Jul 2025£360,000 | 4 Bed House25, Warren Drive, Caerphilly, CF83 1HQ25, Warren Drive, Caerphilly, CF83 1HQ
- Sold Nov 2024£450,000 | 4 Bed House84, St. Martins Road, Caerphilly, CF83 1EN84, St. Martins Road, Caerphilly, CF83 1EN
- Sold Nov 2024£310,000 | 4 Bed House2, Underwood, Caerphilly, CF83 1HW2, Underwood, Caerphilly, CF83 1HW
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 £412,666, ranging from £275,495 to £633,340.
- The Chalet
4 Bed House | 21 m | Est. Value: £325,647
- Fairview
3 Bed House | 23 m | Est. Value: £275,495
- 1 Rectory Road
5 Bed House | 24 m | Est. Value: £383,568
- 2 Rectory Road
4 Bed House | 26 m | Est. Value: £351,003
- 8 St. Martins Road
5 Bed House | 30 m | Est. Value: £421,620
Location Comparison
Our analysis of the public data ranks 21, St. Martins Road, Caerphilly as the 56th largest and the 48th most expensive of the 110 addresses on St. Martins Road, Caerphilly, CF83.
Against the CF83 postcode district average, it is £204k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Caerphilly|300 m away
- Aber|700 m away
- Energlyn & Churchill Park|1.5 km 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.












