TREFARTHEN, MYNYDD MECHELL, AMLWCH, LL68 0TE - £129,575

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

TREFARTHEN is a small extended detached house of 93m², built sometime before 1900, which could now be worth an estimated £212,509. It was last sold for £129,575 in October 2009, which was around 33% below the average October 2009 detached price in the Isle of Anglesey local authority area. The most recent EPC inspection was April 2009, where the current energy rating was F, and the potential energy rating was E.

TREFARTHEN Sold Prices

Land registry data shows two sales for TREFARTHEN 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 TREFARTHEN 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
2009 29 OCT	£129,575	£191,990	33% below HPI
1999 29 OCT	£64,000	£71,899	11% below HPI

TREFARTHEN 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 TREFARTHEN sales from October 1999 and October 2009 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 1999 sale was for 11% below the HPI. So the extrapolation line tracks at 11% below the HPI over time, until the October 2009 sale, where it falls to 33% below the HPI. The line then continues to track at 33% below the HPI.

What might TREFARTHEN be worth now?

TREFARTHEN might now be worth an estimated £212,509.

This is based on house price inflation of 64%, between October 2009 and February 2025, 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 64% inflationary increase is applied to the most recent sale price for TREFARTHEN of £129,575 on 29th October 2009. For the value to have increased from £129,575 to £212,509 over the sixteen years and eight months to February 2025, the following assumptions must hold true:

• The value of TREFARTHEN has moved in line with the HPI for detached houses in the Isle of Anglesey local authority area.
• The October 2009 sale price of £129,575 represented a fair market value for the property.
• The size, condition, and specification of TREFARTHEN has not materially changed since October 2009.

How Large is TREFARTHEN?

TREFARTHEN is 93m², which includes one extension, according to the EPC inspection conducted in April 2009. This puts it in the smallest 30% of detached houses houses in Mynydd Mechell, based on EPC data. The below chart shows the distribution of detached houses houses by size in Mynydd Mechell, and where TREFARTHEN lies on this distribution: 27% of detached houses houses are smaller than TREFARTHEN, and 73% of houses are larger. Note that EPC data is not available for all properties in Mynydd Mechell.

TREFARTHEN: Plot and Title Map

TREFARTHEN sits on a plot of roughly 0.492 of an acre, or 1,993m². The below map shows the location of TREFARTHEN, 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 TREFARTHEN). 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 TREFARTHEN?

TREFARTHEN is located in MYNYDD MECHELL, in the LL68 postcode district. The below map shows the position of TREFARTHEN in MYNYDD MECHELL.