Our Data Sources
18, Carmarthen Street, Cardiff has 4 entries in the Land Registry , most recently in February 2025 and a single entry in the EPC database dated November 2024.
We combine this information with that 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 18, Carmarthen Street, Cardiff is in very good condition we estimate a sale value of £342,819 and a rental value of £1,618 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £303,640 and a rental value of £1,433 per month.
Plot Size
According to data from HM Land Registry, 18, Carmarthen Street, Cardiff sits on a plot of 115 m2.
We have plot size data on 13 out of 13 other houses in the postcode and 18, Carmarthen Street, Cardiff sits on the 3rd largest plot.
Energy Efficiency
18, Carmarthen Street, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 21 Nov 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 18, Carmarthen Street, Cardiff was last sold on 21st February 2025 for £345,000 and was recorded as a freehold house.
The property has had 4 sales since 1995.
Since February 2025, the market for similar properties has dropped by 6.7%.
- Sold Feb 2025£345,000
- Sold Apr 2017£230,000
- Sold Dec 2013£181,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 179 sales of properties similar to 18, Carmarthen Street, Cardiff within a radius of 360 metres over the last 2 years.
The most recent example is 18, Glamorgan Street, Cardiff, CF5 1QS, a freehold house which sold for £436,000 on the 30th March 2026.
Read more about house prices in CF5.
- Sold Mar 2026£436,000 | 4 Bed House18, Glamorgan Street, Cardiff, CF5 1QS18, Glamorgan Street, Cardiff, CF5 1QS
- Sold Nov 2025£325,000 | 3 Bed House3, Rectory Road, Cardiff, CF5 1QL3, Rectory Road, Cardiff, CF5 1QL
- Sold Jul 2024£267,500 | 3 Bed House6, Rectory Road, Cardiff, CF5 1QL6, Rectory Road, Cardiff, CF5 1QL
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Carmarthen Street, Cardiff, CF5 has a total of 48 addresses. According to our analysis of all the public data, 18, Carmarthen Street, Cardiff is the 2nd largest and the 2nd most expensive property on the street.
When compared to the postcode district it is £32k more expensive than the average property in CF5.
More reading links
Schools Nearby
Public Transport Nearby
- Ninian Park|900 m away
- Waun-Gron Park|1.8 km away
- Cathays|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 is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
