AVILION, BRAICH TALOG, TREGARTH, BANGOR, LL57 4PD - £347,500

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

AVILION is a very large extended detached house of 170m², built sometime between 1900 and 1929, which could now be worth an estimated £528,356. It was last sold for £347,500 in September 2011, which was around 75% above the average September 2011 detached price in the Gwynedd local authority area. The most recent EPC inspection was July 2011, where the current energy rating was D, and the potential energy rating was D.

AVILION Sold Prices

Land registry data shows three sales for AVILION since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Gwynedd local authority area for the corresponding sale date. Two of the three AVILION sales were for above the average price, whilst one was 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
2011 23 SEP	£347,500	£198,327	75% above HPI
2006 22 SEP	£250,000	£199,187	26% above HPI
2000 19 MAY	£68,500	£76,819	11% below HPI

AVILION 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 three AVILION sales between May 2000 and September 2011 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 2006 sale was for 26% above the HPI. So the extrapolation line tracks at 26% above the HPI over time, until the September 2011 sale, where it rises to 75% above the HPI. The line then continues to track at 75% above the HPI.

What might AVILION be worth now?

AVILION might now be worth an estimated £528,356.

This is based on house price inflation of 52%, between September 2011 and February 2025, 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 52% inflationary increase is applied to the most recent sale price for AVILION of £347,500 on 23rd September 2011. For the value to have increased from £347,500 to £528,356 over the fourteen years and seven months to February 2025, the following assumptions must hold true:

• The value of AVILION has moved in line with the HPI for detached houses in the Gwynedd local authority area.
• The September 2011 sale price of £347,500 represented a fair market value for the property.
• The size, condition, and specification of AVILION has not materially changed since September 2011.

How Large is AVILION?

AVILION is 170m², which includes three extensions, according to the EPC inspection conducted in July 2011. This puts it in the largest 20% of detached houses houses in Tregarth, based on EPC data. The below chart shows the distribution of detached houses houses by size in Tregarth, and where AVILION lies on this distribution: 82% of detached houses houses are smaller than AVILION, and 18% of houses are larger. Note that EPC data is not available for all properties in Tregarth.

AVILION: Plot and Title Map

AVILION sits on a plot of roughly 0.274 of an acre, or 1,107m². The below map shows the location of AVILION, 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 AVILION). 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 AVILION?

AVILION is located on BRAICH TALOG in TREGARTH, in the LL57 postcode district. The below map shows the position of AVILION on BRAICH TALOG.