TYDDYN ALYS, CWM-Y-GLO, CAERNARFON, LL55 4EA - £332,500

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

TYDDYN ALYS is a large extended detached house of 149m², built sometime before 1900, which could now be worth an estimated £447,511. It was last sold for £332,500 in November 2016, which was around 51% above the average November 2016 detached price in the Gwynedd local authority area. The most recent EPC inspection was June 2016, where the current energy rating was F, and the potential energy rating was B.

TYDDYN ALYS Sold Prices

Land registry data shows two sales for TYDDYN ALYS since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Gwynedd local authority area for the corresponding sale date. Both of the two TYDDYN ALYS 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
2016 25 NOV	£332,500	£219,981	51% above HPI
1998 12 JAN	£105,000	£65,464	60% above HPI

TYDDYN ALYS Price Paid vs. HPI Average

The below graph shows the average detached house price in the Gwynedd local authority area over time, sourced from the HPI. The two TYDDYN ALYS sales from January 1998 and November 2016 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 January 1998 sale was for 60% above the HPI. So the extrapolation line tracks at 60% above the HPI over time, until the November 2016 sale, where it falls to 51% above the HPI. The line then continues to track at 51% above the HPI.

What might TYDDYN ALYS be worth now?

TYDDYN ALYS might now be worth an estimated £447,511.

This is based on house price inflation of 34.6%, between November 2016 and December 2024, for 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 34.6% inflationary increase is applied to the most recent sale price for TYDDYN ALYS of £332,500 on 25th November 2016. For the value to have increased from £332,500 to £447,511 over the seven years and eleven months to December 2024, the following assumptions must hold true:

• The value of TYDDYN ALYS has moved in line with the HPI for detached houses in the Gwynedd local authority area.
• The November 2016 sale price of £332,500 represented a fair market value for the property.
• The size, condition, and specification of TYDDYN ALYS has not materially changed since November 2016.

How Large is TYDDYN ALYS?

TYDDYN ALYS is 149m², which includes two extensions, according to the EPC inspection conducted in June 2016. This puts it in the largest 30% of detached houses houses in Llanrug, based on EPC data. The below chart shows the distribution of detached houses houses by size in Llanrug, and where TYDDYN ALYS lies on this distribution: 76% of detached houses houses are smaller than TYDDYN ALYS, and 22% of houses are larger. Note that EPC data is not available for all properties in Llanrug.

TYDDYN ALYS: Plot and Title Map

TYDDYN ALYS sits on a plot of roughly 4.5 acres, or 18,226m². The below map shows the location of TYDDYN ALYS, 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 TYDDYN ALYS). 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.

Where is TYDDYN ALYS?

TYDDYN ALYS is located in CWM-Y-GLO, in the LL55 postcode district. The below map shows the position of TYDDYN ALYS in CWM-Y-GLO.