Y GILWEN, MAESINCLA LANE, CAERNARFON, LL55 1DD - £227,500

The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.

Y GILWEN is a very large extended detached house of 314m², built sometime before 1900, which could now be worth an estimated £378,396. It was last sold for £227,500 in October 2004, which was around 25% above the average October 2004 detached price in the Gwynedd local authority area. The most recent EPC inspection was August 2022, where the current energy rating was E, and the potential energy rating was B.

Y GILWEN Sold Prices

Land registry data shows three sales for Y GILWEN 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 Y GILWEN 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
2004 29 OCT	£227,500	£181,296	25% above HPI
1999 7 DEC	£81,000	£72,669	11% above HPI
1996 27 SEP	£48,000	£60,632	21% below HPI

Y GILWEN 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 Y GILWEN sales between September 1996 and October 2004 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 December 1999 sale was for 11% above the HPI. So the extrapolation line tracks at 11% above the HPI over time, until the October 2004 sale, where it rises to 25% above the HPI. The line then continues to track at 25% above the HPI.

What might Y GILWEN be worth now?

Y GILWEN might now be worth an estimated £378,396.

This is based on house price inflation of 66.3%, between October 2004 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 66.3% inflationary increase is applied to the most recent sale price for Y GILWEN of £227,500 on 29th October 2004. For the value to have increased from £227,500 to £378,396 over the 21 years and eight months to February 2025, the following assumptions must hold true:

• The value of Y GILWEN has moved in line with the HPI for detached houses in the Gwynedd local authority area.
• The October 2004 sale price of £227,500 represented a fair market value for the property.
• The size, condition, and specification of Y GILWEN has not materially changed since October 2004.

How Large is Y GILWEN?

Y GILWEN is 314m², which includes two extensions, according to the EPC inspection conducted in August 2022. This puts it in the largest 10% of detached houses houses in Caernarfon, based on EPC data. The below chart shows the distribution of detached houses houses by size in Caernarfon, and where Y GILWEN lies on this distribution: More than 99% of detached houses houses are smaller than Y GILWEN, and less than 1% of houses are larger. Note that EPC data is not available for all properties in Caernarfon.

Y GILWEN: Plot and Title Map

Y GILWEN sits on a plot of roughly 0.260 of an acre, or 1,052m². The below map shows the location of Y GILWEN, 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 Y GILWEN). 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 Y GILWEN?

Y GILWEN is located on MAESINCLA LANE in CAERNARFON, in the LL55 postcode district. The below map shows the position of Y GILWEN on MAESINCLA LANE.