Our Data Sources
18, St. Nons Avenue, Carmarthen has 2 entries in the Land Registry , most recently in June 2022 and a single entry in the EPC database dated February 2026.
We combine this information with that 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
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, St. Nons Avenue, Carmarthen is in very good condition we estimate a sale value of £264,288 and a rental value of £1,323 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £234,083 and a rental value of £1,172 per month.
Plot Size
According to data from HM Land Registry, 18, St. Nons Avenue, Carmarthen sits on a plot of 289 m2.
We have plot size data on 25 out of 27 other houses in the postcode and 18, St. Nons Avenue, Carmarthen sits on the 5th largest plot.
Energy Efficiency
18, St. Nons Avenue, Carmarthen has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 18 Feb 2026.
The property is connected to mains gas and has high performance glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
According to HM Land Registry, 18, St. Nons Avenue, Carmarthen was last sold on 9th June 2022 for £231,000 and was recorded as a freehold house.
The property has had 2 sales since 1995.
Since June 2022, the market for similar properties has risen by 18.1%.
- Sold Jun 2022£231,000
- Sold Feb 2015£160,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 122 sales of properties similar to 18, St. Nons Avenue, Carmarthen within a radius of 580 metres over the last 2 years.
The most recent example is 30, St. Nons Avenue, Carmarthen, SA31 3DL, a freehold house which sold for £75,362 on the 11th August 2025.
Read more about house prices in SA31.
- Sold Aug 2025£75,362 | 3 Bed House30, St. Nons Avenue, Carmarthen, SA31 3DL30, St. Nons Avenue, Carmarthen, SA31 3DL
- Sold May 2025£255,000 | 3 Bed House21, St. Nons Avenue, Carmarthen, SA31 3DJ21, St. Nons Avenue, Carmarthen, SA31 3DJ
- Sold Mar 2025£250,000 | 3 Bed House32, St. Nons Avenue, Carmarthen, SA31 3DL32, St. Nons Avenue, Carmarthen, SA31 3DL
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
St. Nons Avenue, Carmarthen, SA31 has a total of 46 addresses. According to our analysis of all the public data, 18, St. Nons Avenue, Carmarthen is the 29th largest and the 20th most expensive property on the street.
When compared to the postcode district it is £6k more expensive than the average property in SA31.
More reading links
Schools Nearby
Public Transport Nearby
- Carmarthen|1.0 km away
- Ferryside|10.5 km away
- Kidwelly|13.7 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.
