HouseMarketBook

SA31, Carmarthen and Johnstown, Carmarthenshire

Postcode district in Carmarthenshire · 544 sales in the last 24 months, 429 with a floor area counted

Median price per square metre, last 24 months£2,400429 sales · £223 per sq ft · up 1% on a year ago

Prices per square metre in SA31 are up 1% on a year ago, at a median of £2,400 (£223 per sq ft).

Half of the 429 counted sales were between £1,850 and £2,830 per square metre, and the median price paid was £220,000. HM Land Registry records 9,064 sales in this postcode district since 1995.

Median price, 24 months£220,000
£ per m², middle half£1,850 to £2,830
Sales, 24 months544429 with a floor area counted
Typical floor area89 m²

By property type

TypeSales£ / m²Middle halfMedian price
Detached154£2,710£2,410–2,970£300,000
Flat or maisonette3———
Semi-detached137£2,430£2,070–2,840£222,000
Terraced135£1,790£1,520–2,330£145,000
Counted sales over the last 24 months. A type needs 12 sales for a median; each type's median is what the fair-value check compares against in a sector.

The trend

Median £ per m² in SA31 by quarter, up 1% on a year ago
2,2502,4952,740£2,3402024 Q42026 Q3
Median £ per m² by year since 1995
5101,5052,500£2,34019952026
Each point is the median of the counted sales in that period. Older sales use the floor area on the latest certificate.

Busiest streets in SA31

By sales in the last 24 months
A street needs 12 counted sales for a median of its own; a dash means it has fewer.

Year by year

Counted sales
YearSalesMedian priceMedian £ / m²
2026134£205,500£2,340
2025238£228,800£2,500
2024202£189,300£2,150
2023191£177,000£2,040
2022255£195,000£2,090
2021348£174,000£1,960
2020246£160,000£1,840
2019254£155,800£1,670
2018255£157,000£1,640
2017291£145,000£1,580
2016284£151,000£1,600
2015203£145,000£1,580
The last 12 years; the chart above runs from 1995.

Sales to September 2026 · HM Land Registry price paid data · MHCLG energy certificates · ONS postcode directory · medians of counted sales over 24 months · typical floor area 89 m² · change on a year ago +1% · An index-based comparison of sold prices, not a valuation.