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.
18 GELLI DEG is a very small terraced house of 64m², built sometime between 2007 and 2011, which could now be worth an estimated £192,976. It was last sold for £167,250 in January 2022, which was around 14% above the average January 2022 terraced price in the Swansea local authority area. The most recent EPC inspection was November 2025, where the current energy rating was C, and the potential energy rating was B.
Land registry data shows four sales for 18 GELLI DEG since 1st January 1995. The below table shows the price paid for the four sales, along with the average terraced price in the Swansea local authority area for the corresponding sale date. All of the four 18 GELLI DEG 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 |
|---|---|---|---|
2022 17 JAN | £167,250 | £146,961 | 14% above HPI |
2016 19 FEB | £126,000 | £105,690 | 19% above HPI |
2012 14 DEC | £115,000 | £97,620 | 18% above HPI |
2006 13 SEP | £119,995 | £105,909 | 13% above HPI |
The below graph shows the average terraced house price in the Swansea local authority area over time, sourced from the HPI. The four 18 GELLI DEG sales between September 2006 and January 2022 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 February 2016 sale was for 19% above the HPI. So the extrapolation line tracks at 19% above the HPI over time, until the January 2022 sale, where it falls to 14% above the HPI. The line then continues to track at 14% above the HPI.

18 GELLI DEG might now be worth an estimated £192,976.
This is based on house price inflation of 15.4%, between January 2022 and May 2026, for terraced houses, in the Swansea local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 15.4% inflationary increase is applied to the most recent sale price for 18 GELLI DEG of £167,250 on 17th January 2022. For the value to have increased from £167,250 to £192,976 over the three years and eight months to May 2026, the following assumptions must hold true:
18 GELLI DEG is 64m² according to the EPC inspection conducted in November 2025. This puts it in the smallest 10% of terraced houses houses in Swansea, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Swansea, and where 18 GELLI DEG lies on this distribution: 4% of terraced houses houses are smaller than 18 GELLI DEG, and 96% of houses are larger. Note that EPC data is not available for all properties in Swansea.

18 GELLI DEG sits on a plot of roughly 0.041 of an acre, or 165m². The below map shows the location of 18 GELLI DEG, 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 18 GELLI DEG). 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.

18 GELLI DEG is located in FFORESTFACH, in the SA5 postcode district. The below map shows the position of No. 18 on GELLI DEG.

Most recent sales first: