TREFIN, PENRALLT, LLANGEFNI, LL77 7NL - £108,000

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

TREFIN is a midsized extended detached house of 118m², built sometime between 1950 and 1966, which could now be worth an estimated £250,139. It was last sold for £108,000 in September 2003, which was around 17% below the average September 2003 detached price in the Isle of Anglesey local authority area. The most recent EPC inspection was June 2013, where the current energy rating was E, and the potential energy rating was C.

TREFIN Sold Prices

Land registry data shows two sales for TREFIN since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Isle of Anglesey local authority area for the corresponding sale date. Both of the two TREFIN sales were for below 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
2003 9 SEP	£108,000	£130,520	17% below HPI
1996 16 SEP	£52,000	£56,689	8% below HPI

TREFIN Price Paid vs. HPI Average

The below graph shows the average detached house price in the Isle of Anglesey local authority area over time, sourced from the HPI. The two TREFIN sales from September 1996 and September 2003 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 September 1996 sale was for 8% below the HPI. So the extrapolation line tracks at 8% below the HPI over time, until the September 2003 sale, where it falls to 17% below the HPI. The line then continues to track at 17% below the HPI.

What might TREFIN be worth now?

TREFIN might now be worth an estimated £250,139.

This is based on house price inflation of 131.6%, between September 2003 and December 2024, for detached houses, in the Isle of Anglesey local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 131.6% inflationary increase is applied to the most recent sale price for TREFIN of £108,000 on 9th September 2003. For the value to have increased from £108,000 to £250,139 over the twenty years and nine months to December 2024, the following assumptions must hold true:

• The value of TREFIN has moved in line with the HPI for detached houses in the Isle of Anglesey local authority area.
• The September 2003 sale price of £108,000 represented a fair market value for the property.
• The size, condition, and specification of TREFIN has not materially changed since September 2003.

How Large is TREFIN?

TREFIN is 118m², which includes one extension, according to the EPC inspection conducted in June 2013. This puts it in the largest 50% of detached houses houses in Llangefni, based on EPC data. The below chart shows the distribution of detached houses houses by size in Llangefni, and where TREFIN lies on this distribution: 57% of detached houses houses are smaller than TREFIN, and 42% of houses are larger. Note that EPC data is not available for all properties in Llangefni.

TREFIN: Plot and Title Map

TREFIN sits on a plot of roughly 0.124 of an acre, or 500m². The below map shows the location of TREFIN, 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 TREFIN). 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 TREFIN?

TREFIN is located on PENRALLT in LLANGEFNI, in the LL77 postcode district. The below map shows the position of TREFIN on PENRALLT.