The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.
20 HEOL BEILI GLAS is a very small terraced house of 75m², built sometime between 1950 and 1966, which could now be worth an estimated £263,174. It was last sold for £250,000 in June 2025, which was around 79% above the average June 2025 terraced price in the Carmarthenshire local authority area. The most recent EPC inspection was September 2021, where the current energy rating was D, and the potential energy rating was B.
Land registry data shows two sales for 20 HEOL BEILI GLAS since 1st January 1995. The below table shows the price paid for the two sales, along with the average terraced price in the Carmarthenshire local authority area for the corresponding sale date. Both of the two 20 HEOL BEILI GLAS sales were for above the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).
| Date | Price | HPI Price | Variation from HPI |
|---|---|---|---|
2025 18 JUN | £250,000 | £139,517 | 79% above HPI |
2021 1 OCT | £172,000 | £127,186 | 35% above HPI |
The below graph shows the average terraced house price in the Carmarthenshire local authority area over time, sourced from the HPI. The two 20 HEOL BEILI GLAS sales from October 2021 and June 2025 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the October 2021 sale was for 35% above the HPI. So the extrapolation line tracks at 35% above the HPI over time, until the June 2025 sale, where it rises to 79% above the HPI. The line then continues to track at 79% above the HPI.

20 HEOL BEILI GLAS might now be worth an estimated £263,174.
This is based on house price inflation of 5.3%, between June 2025 and May 2026, for terraced houses, in the Carmarthenshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 5.3% inflationary increase is applied to the most recent sale price for 20 HEOL BEILI GLAS of £250,000 on 18th June 2025. For the value to have increased from £250,000 to £263,174 over the one year and one month to May 2026, the following assumptions must hold true:
20 HEOL BEILI GLAS is 75m² according to the EPC inspection conducted in September 2021. This puts it in the smallest 20% of terraced houses houses in Llanelli, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Llanelli, and where 20 HEOL BEILI GLAS lies on this distribution: 11% of terraced houses houses are smaller than 20 HEOL BEILI GLAS, and 88% of houses are larger. Note that EPC data is not available for all properties in Llanelli.

20 HEOL BEILI GLAS sits on a plot of roughly 0.074 of an acre, or 301m². The below map shows the location of 20 HEOL BEILI GLAS, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 20 HEOL BEILI GLAS). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

20 HEOL BEILI GLAS is located in LLANELLI, in the SA14 postcode district. The below map shows the position of No. 20 on HEOL BEILI GLAS.

Most recent sales first: