Based on the January 2025 Price Paid Data (released on 3rd March 2025), the December 2024 House Price Index (released on 19th February 2025), and the January 2025 Energy Performance of Buildings Data (released on 27th February 2025). Sources
28 MAES GERDDI is a small semi-detached house of 70m², built sometime between 1967 and 1975. It was last sold for £175,000 in March 2017, which was around 25% above the average March 2017 semi-detached price in the Gwynedd local authority area. The most recent EPC inspection was July 2012, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows two sales for 28 MAES GERDDI since 1st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Gwynedd local authority area for the corresponding sale date. Both of the two 28 MAES GERDDI 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 |
---|---|---|---|
2017 17 MAR | £175,000 | £140,389 | ![]() 25% above HPI |
2013 12 FEB | £135,000 | £130,428 | ![]() 4% above HPI |
The below graph shows the average semi-detached house price in the Gwynedd local authority area over time, sourced from the HPI. The two 28 MAES GERDDI sales from February 2013 and March 2017 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 2013 sale was for 4% above the HPI. So the extrapolation line tracks at 4% above the HPI over time, until the March 2017 sale, where it rises to 25% above the HPI. The line then continues to track at 25% above the HPI.
28 MAES GERDDI might now be worth an estimated £246,943.
This is based on house price inflation of 41.1%, between March 2017 and December 2024, for semi-detached houses, in the Gwynedd local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 41.1% inflationary increase is applied to the most recent sale price for 28 MAES GERDDI of £175,000 on 17th March 2017. For the value to have increased from £175,000 to £246,943 over the six years and three months to December 2024, the following assumptions must hold true:
28 MAES GERDDI is 70m² according to the EPC inspection conducted in July 2012. This puts it in the smallest 30% of semi-detached houses houses in Porthmadog, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Porthmadog, and where 28 MAES GERDDI lies on this distribution: 29% of semi-detached houses houses are smaller than 28 MAES GERDDI, and 67% of houses are larger. Note that EPC data is not available for all properties in Porthmadog.
28 MAES GERDDI sits on a plot of roughly 0.045 of an acre, or 183m². The below map shows the location of 28 MAES GERDDI, 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 28 MAES GERDDI). 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.
28 MAES GERDDI is located in PORTHMADOG, in the LL49 postcode district. The below map shows the position of No. 28 on MAES GERDDI.
Most recent sales first: