How much is Gwylfa, Old St Clears Road, Johnstown, Carmarthen, Dyfed, SA31 3HL worth?
Estimated value — November 2026
£253,000
Likely range £139,000 – £345,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale January 1996
25%
confidence
Low
Typically within 19% of the sale price
Property details
Semi-detached house
Old St Clears Road · Carmarthen · SA31 3HL
Address
- District
- Carmarthen
- County
- Dyfed
Value over time
- Modelled value
- Projected
- Likely range (80%)
- Today's estimate
Drawn through each of this property's recorded sales and ending at today's estimate, with the UK House Price Index for its area and property type filling in the months between. The shaded band is where four in five prices fell when we tested this line against real sales of similar homes; it widens the further a month is from a recorded sale, and today it matches the likely range above.
View as a table
| Year | Modelled value | Likely range |
|---|---|---|
| 2000 | £62,326 | £50,111 – £74,251 |
| 2001 | £69,424 | £54,737 – £83,478 |
| 2002 | £87,399 | £67,744 – £105,490 |
| 2003 | £114,128 | £87,027 – £138,407 |
| 2004 | £151,291 | £113,261 – £184,629 |
| 2005 | £160,500 | £117,703 – £197,684 |
| 2006 | £178,605 | £128,536 – £221,441 |
| 2007 | £188,243 | £132,950 – £235,751 |
| 2008 | £160,957 | £112,459 – £203,038 |
| 2009 | £162,860 | £112,232 – £207,407 |
| 2010 | £157,911 | £107,512 – £203,215 |
| 2011 | £153,927 | £103,511 – £198,941 |
| 2012 | £144,385 | £108,399 – £173,427 |
| 2013 | £149,788 | £110,248 – £181,697 |
| 2014 | £157,322 | £113,476 – £192,707 |
| 2015 | £158,990 | £112,336 – £196,640 |
| 2016 | £165,736 | £114,661 – £206,954 |
| 2017 | £174,348 | £118,050 – £219,781 |
| 2018 | £179,571 | £118,941 – £228,500 |
| 2019 | £189,034 | £122,424 – £242,790 |
| 2020 | £202,682 | £128,277 – £262,728 |
| 2021 | £222,128 | £137,311 – £290,577 |
| 2022 | £255,016 | £153,884 – £336,631 |
| 2023 | £242,491 | £142,753 – £322,981 |
| 2024 | £247,900 | £142,285 – £333,133 |
| 2025 | £251,864 | £140,850 – £341,454 |
| 2026 | £253,000 | £139,000 – £345,000 |
Sale history
Mortgage calculator
£1,358
Estimated monthly repayment
£227,700
Loan amount
£261,132
Total interest
£488,832
Total repayable
A guide only, based on a capital repayment mortgage held at a constant interest rate for the full term. Not a mortgage offer or financial advice.
Related properties
- Goscar, Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£168,000 · 2017£277,000
- Lynthorpe, Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£54,500 · 1998£242,000
- The Nook, Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£40,000 · 1998£195,000
- 15 Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£127,500 · 2017£219,000
- 14 Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£120,000 · 2013£214,000
- Caeberys, Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£230,000 · 2019£341,000
- 17 Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£133,500 · 2019£189,000
- Woodbine Cottages, 6, Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£412,500 · 2023£124,000
- Johnstown Filling Station, Old St Clears Road, Johnstown, Carmarthen, Carmarthenshire, SA31 3HL£208,999 · 2021—
About this property
Gwylfa, Old St Clears Road, Johnstown, Carmarthen, Dyfed, SA31 3HL is a semi-detached house on Old St Clears Road in Carmarthen, Dyfed. Stede's estimated value for November 2026 is £253,000. Four in five similar homes sold within their likely range when tested; for this property that range is £139,000 to £345,000. It combines its own last sale brought up to date with the House Price Index (75%) and recent sales of 69 similar homes in the same postcode sector (25%). The confidence score is 25 out of 100 (low): estimates like this one are typically within 19% of the eventual sale price.
It last sold in January 1996 for £49,000. The current estimate is 416% higher than that price. The current owner has held it for about 30 years.
The modelled value is up 1% over the past year and up 12% over the past five years.
Among 8 nearby properties Stede tracks in the SA31 area, estimated values run from £124,000 to £341,000. This semi-detached house's £253,000 sits toward the upper end of that range.
Common questions
How much is Gwylfa, Old St Clears Road, Johnstown, Carmarthen, Dyfed, SA31 3HL worth?
Stede estimates Gwylfa, Old St Clears Road, Johnstown, Carmarthen, Dyfed, SA31 3HL is worth £253,000 as of November 2026, within a likely range of £139,000 to £345,000. The estimate is generated automatically from recorded sale prices of this and similar nearby homes and the UK House Price Index, and is not a formal valuation.
When did Gwylfa, Old St Clears Road, Johnstown, Carmarthen, Dyfed, SA31 3HL last sell?
It last sold in January 1996 for £49,000.
What type of property is Gwylfa, Old St Clears Road, Johnstown, Carmarthen, Dyfed, SA31 3HL?
It is recorded as a Semi-detached house on Old St Clears Road in the SA31 postcode area.
How reliable is this estimate?
The confidence score is 25 out of 100 (low). Tested against real sales of similar homes, estimates like this one are typically within 19% of the sale price, and four in five sold within their likely range. The figure is a data model, not a RICS valuation or Home Report, and should not be used for mortgage or legal decisions.
How does Stede calculate this estimate?
It combines its own last sale brought up to date with the House Price Index (75%) and recent sales of 69 similar homes in the same postcode sector (25%). Each piece of evidence gets the share that proved most accurate when tested against real sales of similar homes, and the same testing sets the likely range and confidence. Full detail is on the methodology page.
How we got this figure
We weighed the evidence below, giving each piece the share that proved most accurate when we tested it against real sales of similar homes. The likely range and confidence come from testing the same method against 1,827 real sales of similar homes.
- Its sale in January 1996, brought up to today with the House Price Index£259,49375%
- 69 similar homes sold recently in the same postcode sector£232,08125%
Estimate £253,000, likely £139,000 – £345,000
Read the full methodology and data sources →