21  Union Street

21 Union StreetHouse Prices / Wales, Carmarthenshire, Union Street, SA31 3DE

Last updated Jun 2026

Key Building Insights

21 Union Street is a residential building situated on Union Street, Carmarthen, SA31 with 2 addresses.

It ranks as the 107th largest and 98th most expensive of the 480 buildings in the SA31 area. The dominant property type is a period flat built between 1800 and 1911.

The building contains a total of 2 properties: 2 flats.

2
Properties
  • Flats

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House Pricesin 21 Union Street

Sale prices range from £78,437 for 1 bedroom Leasehold flats with a garden (419 ft2) to £96,890 for 2 bedroom Leasehold flats (667 ft2) .

Monthly rental prices range from £518 pcm for 1 bed flats to £607 pcm for 2 bed flats.

The gross rental yield is between 7.5% and 7.9%.

The average value per square foot is £166.

Average Sale Value
£87,663
Average Rental Value
£562 pcm
Average Rental Yield
7.7% /year
Average Value Per Sqft
£166 /ft2
Prices last updated 1st June 2026
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properties list title title

Property Typesin 21 Union Street

  • 2 period flats built between 1800 and 1911
  • period flat (2)
Energy Efficiency

Energy Efficiencyof properties in 21 Union Street

  • Energy Performance Certificate (EPC) surveys conducted for 2 properties.
  • The dominant rating is D.
  • A (0)
  • E (0)
  • B (0)
  • F (0)
  • C (0)
  • G (0)
  • D (2)
  • No EPC (0)
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Schools Nearby

Schools Nearby

      More reading links
      Source: Ofsted 2026
      Public Transport Nearby

      Public Transport Nearby

      The closest station to 21, Union Street, Carmarthen, SA31 3DE is Carmarthen station, which is 1.0 kilometres away.

      • 1.0
        km
        Carmarthen
      • 10.4
        km
        Ferryside
      • 13.6
        km
        Kidwelly
      • 19.8
        km
        Pembrey & Burry Port
      Source: National Rail
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