Our Data Sources
12, St. Marks Avenue, Cardiff has no records in the Land Registry and a single entry in the EPC database dated February 2020.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 12, St. Marks Avenue, Cardiff is in very good condition we estimate a sale value of £363,180 and a rental value of £1,756 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £321,674 and a rental value of £1,556 per month.
Plot Size
According to data from HM Land Registry, 12, St. Marks Avenue, Cardiff sits on a plot of 157 m2.
We have plot size data on 15 out of 15 other houses in the postcode and 12, St. Marks Avenue, Cardiff sits on the 9th largest plot.
Energy Efficiency
12, St. Marks Avenue, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 11 Feb 2020.
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
According to the Land Registry and our network of Estate Agents, there have been 125 sales of properties similar to 12, St. Marks Avenue, Cardiff within a radius of 500 metres since 2013.
The most recent example is 29, Laytonia Avenue, Cardiff, CF14 3BQ, a freehold house which sold for £380,000 on the 25th March 2026.
Read more about house prices in CF14.
- Sold Mar 2026£380,000 | 4 Bed House29, Laytonia Avenue, Cardiff, CF14 3BQ29, Laytonia Avenue, Cardiff, CF14 3BQ
- Sold Mar 2026£325,000 | 4 Bed House8, Laytonia Avenue, Cardiff, CF14 3BQ8, Laytonia Avenue, Cardiff, CF14 3BQ
- Sold Sep 2025£350,000 | 4 Bed House165, Whitchurch Road, Cardiff, CF14 3JR165, Whitchurch Road, Cardiff, CF14 3JR
- Sold Sep 2025£400,000 | 4 Bed House26, Heathfield Road, Cardiff, CF14 3JY26, Heathfield Road, Cardiff, CF14 3JY
- Sold Sep 2025£350,000 | 4 Bed House6, St. Georges Road, Cardiff, CF14 4AQ6, St. Georges Road, Cardiff, CF14 4AQ
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 £303,641, ranging from £126,027 to £406,290.
- 10 St. Marks Avenue
3 Bed House | 7 m | Est. Value: £300,369
- 16 St. Marks Avenue
4 Bed House | 11 m | Est. Value: £353,953
- 8 St. Marks Avenue
3 Bed House | 12 m | Est. Value: £312,349
- 6B St. Marks Avenue
2 Bed Flat | 15 m | Est. Value: £126,027
- 6A St. Marks Avenue
2 Bed Flat | 15 m | Est. Value: £165,874
Location Comparison
St. Marks Avenue, Cardiff, CF14 has a total of 17 addresses. According to our analysis of all the public data, 12, St. Marks Avenue, Cardiff is the 5th largest and the 6th most expensive property on the street.
When compared to the postcode district it is £30k less expensive than the average property in CF14.
More reading links
Schools Nearby
Public Transport Nearby
- Heath Low Level|1.5 km away
- Heath High Level|1.6 km away
- Ty Glas|1.9 km away
Available Internet Speeds
According to recent data from Ofcom, Superfast Broadband is available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
