Our Data Sources
21, Bryn Siriol, Caerphilly has a single entry in the Land Registry from June 2010 and a single entry in the EPC database dated October 2021.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium 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, Bryn Siriol, Caerphilly, we estimate a market value of £331,938 and a rental value of £1,665 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £294,002 and £1,475 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Bryn Siriol, Caerphilly as measuring 238 m2.
That makes it the 12th largest plot in the postcode, where 14 of the 17 other houses have recorded plot data.
Energy Efficiency
21, Bryn Siriol, Caerphilly has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 27 Oct 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 21, Bryn Siriol, Caerphilly completed on 4th June 2010 at £145,000 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 risen by 63.7% over the period since June 2010.
- Sold Jun 2010£145,000
Similar Properties Sold Nearby
Over the past 2 years 46 properties similar to 21, Bryn Siriol, Caerphilly have sold within a radius of 700 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 25th July 2025, was 7, Caldicot Court, Caerphilly, CF83 2TJ, a freehold house which sold for £320,000.
Read more about house prices in CF83.
- Sold Jul 2025£320,000 | 4 Bed House7, Caldicot Court, Caerphilly, CF83 2TJ7, Caldicot Court, Caerphilly, CF83 2TJ
- Sold Jan 2025£320,000 | 4 Bed House6, Chester Court, Caerphilly, CF83 2UP6, Chester Court, Caerphilly, CF83 2UP
- Sold Dec 2024£295,000 | 4 Bed House1, Bryn Siriol, Caerphilly, CF83 2AH1, Bryn Siriol, Caerphilly, CF83 2AH
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 48 addresses on Bryn Siriol, Caerphilly, CF83, 21, Bryn Siriol, Caerphilly comes out as the 3rd largest and the 5th most expensive in our analysis of the public data.
It is also £85k more expensive than the average property across the CF83 district.
More reading links
Schools Nearby
Public Transport Nearby
- Energlyn & Churchill Park|1.2 km away
- Aber|1.8 km away
- Llanbradach|2.0 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












