Our Data Sources
17, Mostyn Avenue, Carmarthen has no records in the Land Registry and a single entry in the EPC database dated December 2015.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate 17, Mostyn Avenue, Carmarthen would be worth £474,790, with a potential rental value of £1,649 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £420,528, with a rental value of £1,461 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
17, Mostyn Avenue, Carmarthen occupies a 672 m2 plot as recorded by HM Land Registry.
Of the 15 other houses in this postcode, 13 have recorded plot sizes, and this one ranks as the 2nd largest.
Energy Efficiency
17, Mostyn Avenue, Carmarthen has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 22 Dec 2015.
The property is connected to mains gas and has mostly double glazing. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 18 sales of comparable properties within 1.6 kilometres of 17, Mostyn Avenue, Carmarthen since 2009.
Most recently, 17, Ffordd Y Briallu, Carmarthen, SA31 2JU, a freehold house, sold at £416,000 on the 20th January 2026.
Read more about house prices in SA31.
- Sold Jan 2026£416,000 | 4 Bed House17, Ffordd Y Briallu, Carmarthen, SA31 2JU17, Ffordd Y Briallu, Carmarthen, SA31 2JU
- Sold Aug 2025£420,000 | 4 Bed HouseTy'R Orsaf, Park Close, Carmarthen, SA31 2JRTy'R Orsaf, Park Close, Carmarthen, SA31 2JR
- Sold Aug 2023£440,000 | 4 Bed House86, Abergwili Road, Carmarthen, SA31 2HJ86, Abergwili Road, Carmarthen, SA31 2HJ
- Sold Jul 2023£380,000 | 4 Bed HouseOakfield, Springfield Road, Carmarthen, SA31 1DZOakfield, Springfield Road, Carmarthen, SA31 1DZ
- Sold Mar 2023£395,000 | 4 Bed House16, Parc Y Neuadd, Carmarthen, SA31 2DF16, Parc Y Neuadd, Carmarthen, SA31 2DF
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 £330,177, ranging from £260,618 to £439,488.
- 9 Dolgwili Road
5 Bed House | 21 m | Est. Value: £372,141
- 8 Coed Y Neuadd
3 Bed House | 41 m | Est. Value: £275,657
- 9 Coed Y Neuadd
3 Bed House | 45 m | Est. Value: £274,042
- 14 Mostyn Avenue
4 Bed House | 45 m | Est. Value: £336,977
- 10 Dolgwili Road
4 Bed House | 47 m | Est. Value: £260,618
Location Comparison
Our analysis of the public data ranks 17, Mostyn Avenue, Carmarthen as the 8th largest and the 6th most expensive of the 15 addresses on Mostyn Avenue, Carmarthen, SA31.
Against the SA31 postcode district average, it is £203k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Carmarthen|2.3 km away
- Ferryside|12.6 km away
- Kidwelly|15.2 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
