House prices in Johnstown
Median value — November 2026
£250,000
Modelled from 598 properties Stede tracks in Johnstown
Market snapshot
£250,000
Median value
£260,294
Average value
28
Sales in the last 12 months
+1%
Change over the past year
Value over time
- Modelled value
- Projected
Modelled month by month from the UK House Price Index, averaged across every property type Stede tracks here.
View as a table
| Year | Modelled value |
|---|---|
| 2000 | £58,469 |
| 2001 | £65,274 |
| 2002 | £82,048 |
| 2003 | £107,200 |
| 2004 | £141,985 |
| 2005 | £151,444 |
| 2006 | £168,775 |
| 2007 | £179,304 |
| 2008 | £153,154 |
| 2009 | £155,539 |
| 2010 | £151,569 |
| 2011 | £147,967 |
| 2012 | £139,626 |
| 2013 | £144,674 |
| 2014 | £152,296 |
| 2015 | £154,401 |
| 2016 | £161,609 |
| 2017 | £170,215 |
| 2018 | £175,358 |
| 2019 | £184,286 |
| 2020 | £199,581 |
| 2021 | £219,736 |
| 2022 | £252,068 |
| 2023 | £239,739 |
| 2024 | £245,565 |
| 2025 | £249,289 |
| 2026 | £250,000 |
Property types
- Detached house53%£278,000
- Semi-detached house26%£238,000
- Mid-terrace house16%£173,000
- Property4%£341,500
- Flat / Maisonette2%£134,000
Recent sales
- 74 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NR£253,000 · 2026£258,000
- 22 Heol Morfa Brenin, Johnstown, Carmarthen, Carmarthenshire, SA31 3PA£242,500 · 2026£268,000
- 9 Glantawelan, Johnstown, Carmarthen, Carmarthenshire, SA31 3JA£259,950 · 2026£264,000
- 23 Glantawelan, Johnstown, Carmarthen, Carmarthenshire, SA31 3JA£337,500 · 2026£355,000
- 25 Lon Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3NJ£225,000 · 2026£233,000
- 36 Lon Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3NJ£235,000 · 2026£236,000
- 3 Plas Ystrad, Johnstown, Carmarthen, Carmarthenshire, SA31 3PH£125,000 · 2026£133,000
- 17 Pondside, Johnstown, Carmarthen, Carmarthenshire, SA31 3HU£182,500 · 2026£198,000
Addresses in Johnstown
- 11 Ystrad Drive, Johnstown, Carmarthen, Carmarthenshire, SA31 3PG£240,000 · 2025£254,000
- 110 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£144,000 · 2016£233,000
- 112 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£225,000 · 2025£243,000
- 12 Allt Ioan, Johnstown, Carmarthen, Carmarthenshire, SA31 3SB£150,000 · 2010£249,000
- 12 Cilddewi Park, Johnstown, Carmarthen, Carmarthenshire, SA31 3HP£138,000 · 2005£222,000
- 12 Coed Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3PJ£145,000 · 2022£159,000
- 12 Glantawelan, Johnstown, Carmarthen, Carmarthenshire, SA31 3JA£265,000 · 2025£253,000
- 12 Heol Morfa Brenin, Johnstown, Carmarthen, Carmarthenshire, SA31 3PA£65,000 · 2014£151,000
- 12 Lon Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3NJ£145,000 · 2006£221,000
- 12 Parc Starling, Johnstown, Carmarthen, Carmarthenshire, SA31 3HX£255,000 · 2019£368,000
- 12 Parc Yr Odyn, Johnstown, Carmarthen, Carmarthenshire, SA31 3SE£47,000 · 2000£154,000
- 12 Pen Y Cae, Johnstown, Carmarthen, Carmarthenshire, SA31 3SD£123,000 · 2002£318,000
- 12 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN£224,500 · 2025£239,000
- 12 Plas Y Ddol, Johnstown, Carmarthen, Carmarthenshire, SA31 3PL£146,000 · 2012£271,000
- 12 Ystrad Drive, Johnstown, Carmarthen, Carmarthenshire, SA31 3PG£142,500 · 2020£195,000
- 120 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£156,000 · 2005£262,000
- 122 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£160,000 · 2007£256,000
- 124 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£172,000 · 2019£262,000
- 126 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£260,000 · 2026£276,000
- 13 Cilddewi Park, Johnstown, Carmarthen, Carmarthenshire, SA31 3HP£153,500 · 2008£225,000
- 13 Cwm Ystrad Parc, Johnstown, Carmarthen, Carmarthenshire, SA31 3NZ£135,000 · 2003£297,000
- 13 Cwm Ystrad Park, Johnstown, Carmarthen, Carmarthenshire, SA31 3NZ£240,000 · 2025£251,000
- 13 Glan Yr Ystrad, Johnstown, Carmarthen, Carmarthenshire, SA31 3NY£121,500 · 2017£186,000
- 13 Glantawelan, Johnstown, Carmarthen, Carmarthenshire, SA31 3JA£190,000 · 2016£288,000
- 13 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3LZ£204,000 · 2021£250,000
- 13 Lon Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3NJ£209,950 · 2016£304,000
- 13 Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HH£48,000 · 2001£161,000
- 13 Parc Starling, Johnstown, Carmarthen, Carmarthenshire, SA31 3HX£260,000 · 2022£297,000
- 13 Parc Y Ffordd, Johnstown, Carmarthen, Carmarthenshire, SA31 3HD£51,000 · 2017£83,000
- 13 Parc Yr Odyn, Johnstown, Carmarthen, Carmarthenshire, SA31 3SE£77,995 · 1998£304,000
- 13 Pen Y Cae, Johnstown, Carmarthen, Carmarthenshire, SA31 3SD£225,000 · 2014£367,000
- 13 Plas Ioan, Johnstown, Carmarthen, Carmarthenshire, SA31 3NS£114,995 · 2021£131,000
- 13 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN£182,000 · 2017£288,000
- 13 Plas Y Ddol, Johnstown, Carmarthen, Carmarthenshire, SA31 3PL£232,000 · 2025£241,000
- 13 Ystrad Drive, Johnstown, Carmarthen, Carmarthenshire, SA31 3PG£44,417 · 1998£212,000
- 134 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NN£53,250 · 1997£249,000
- 136 Llansteffan Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3NW£182,000 · 2026£195,000
- 14 Allt Ioan, Johnstown, Carmarthen, Carmarthenshire, SA31 3SB£68,500 · 2000£273,000
- 14 Coed Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3PJ£205,000 · 2024£209,000
- 14 Glan Yr Ystrad, Johnstown, Carmarthen, Carmarthenshire, SA31 3NY£90,000 · 2018£142,000
- 14 Glantawelan, Johnstown, Carmarthen, Carmarthenshire, SA31 3JA£53,650 · 1996£286,000
- 14 Heol Drindod, Johnstown, Carmarthen, Carmarthenshire, SA31 3NU£49,000 · 1997£233,000
- 14 Lon Y Plas, Johnstown, Carmarthen, Carmarthenshire, SA31 3NJ£285,000 · 2024£304,000
- 14 Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£120,000 · 2013£214,000
- 14 Parc Starling, Johnstown, Carmarthen, Carmarthenshire, SA31 3HX£197,000 · 2006£305,000
- 14 Parc Yr Odyn, Johnstown, Carmarthen, Carmarthenshire, SA31 3SE£125,000 · 2007£194,000
- 14 Pen Y Cae, Johnstown, Carmarthen, Carmarthenshire, SA31 3SD£219,000 · 2022£240,000
- 14 Plas Penwern, Johnstown, Carmarthen, Carmarthenshire, SA31 3PN£211,500 · 2025£234,000
- 14 Pondside, Johnstown, Carmarthen, Carmarthenshire, SA31 3HU£30,000 · 2001£129,000
- 14 Ystrad Drive, Johnstown, Carmarthen, Carmarthenshire, SA31 3PG£165,000 · 2007£257,000
About this area
Johnstown, in Carmarthen, is a village. Stede can model 598 properties there, from HM Land Registry Price Paid Data and the UK House Price Index.
As of November 2026, Johnstown has a median estimated value of £250,000 and an average of £260,294.
Modelled values in Johnstown are +1% over the past year and +12% over five years.
The market here is mostly detached houses, which make up 53% of the properties Stede tracks in Johnstown.
28 sales were recorded in Johnstown over the past 12 months.
Common questions
What is the average house price in Johnstown?
As of November 2026, the average estimated value is £260,294 and the median is £250,000 across 598 properties Stede tracks in Johnstown. This is not a formal market valuation.
Are house prices in Johnstown going up or down?
Modelled values in Johnstown are +1% over the past year and +12% over five years, based on the UK House Price Index.
What types of property are in Johnstown?
53% of the properties Stede tracks in Johnstown are detached houses. semi-detached houses are next most common, at 26%.
How many properties are in Johnstown?
Stede can model 598 properties in Johnstown, with 28 recorded sales in the past 12 months.
How does Stede calculate house prices for Johnstown?
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources used for every individual property valuation on Stede. Full detail is on the methodology page.
How we calculate this
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources behind every individual property valuation on Stede.
Read the full methodology and data sources →