12, Mary Street
12, Mary Street
Description & Estimates







12, Mary Street, Caerphilly is described in the public record as a period house with 882 ft2 of internal area, sitting on a 106 m2 plot.
Locally, houses of this size normally have 3 bedrooms with a garden.
Our estimate of the sale value of 12, Mary Street, Caerphilly is £164,984 and its rental estimate is £1,126 per month, given the available information and assuming reasonable condition.
Mary Street, Trethomas, Caerphilly, CF83 falls within the CF83 postal district.
Our Data Sources
12, Mary Street, Caerphilly has no records in the the Land Registry and a single entry in the EPC database dated April 2016.
We combine this information with public data 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.
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 12, Mary Street, Caerphilly, we estimate a market value of £173,233 and a rental value of £1,182 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £153,435 and £1,047 per month respectively.
Recent Market Change
Over the last year, 12, Mary Street, Caerphilly has seen its estimated sale value move up by £1,449 (0.9%) and its estimated rental value increase by £44 per month (3.9%). This results in an estimated gross rental yield of 8.2%.
Plot Size
HM Land Registry records the plot of land for 12, Mary Street, Caerphilly as measuring 106 m2.
That makes it the 41st largest plot in the postcode, where 47 of the 50 other houses have recorded plot data.
Energy Efficiency
12, Mary Street, Caerphilly has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 08 Apr 2016.
The property is connected to mains gas and has partial double glazing. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 12, Mary Street, Caerphilly have sold within a radius of 1.1 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 23rd March 2026, was 42, Mary Street, Caerphilly, CF83 8HN, a freehold house which sold for £188,000.
Read more about house prices in CF83.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Of the 50 addresses on Mary Street, Trethomas, Caerphilly, CF83, 12, Mary Street, Caerphilly comes out as the 35th largest and the 36th most expensive in our analysis of the public data.
It is also £64k less expensive than the average property across the CF83 district.
More reading links
Schools Nearby
Public Transport Nearby
From 12, Mary Street, Caerphilly, the nearest station is Caerphilly, 3.4 kilometres away.
- 3.4kmCaerphilly
- 3.5kmEnerglyn & Churchill Park
- 3.7kmLlanbradach
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.

