TYN LLAIN, GWALCHMAI, HOLYHEAD, LL65 4RE - £385,000

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.

TYN LLAIN is a very large extended detached house of 217m², built sometime before 1900. It was last sold for £385,000 in June 2025, which was around 20% above the average June 2025 detached price in the Isle of Anglesey local authority area. The most recent EPC inspection was March 2025, where the current energy rating was D, and the potential energy rating was C.

TYN LLAIN Sold Prices

Land registry data shows three sales for TYN LLAIN since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Isle of Anglesey local authority area for the corresponding sale date. Two of the three TYN LLAIN 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
2025 4 JUN	£385,000	£320,487	20% above HPI
2018 18 MAY	£262,500	£224,998	17% above HPI
2008 8 FEB	£176,000	£210,681	16% below HPI

TYN LLAIN 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 three TYN LLAIN sales between February 2008 and June 2025 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 May 2018 sale was for 17% above the HPI. So the extrapolation line tracks at 17% above the HPI over time, until the June 2025 sale, where it rises to 20% above the HPI. The line then continues to track at 20% above the HPI.

How Large is TYN LLAIN?

TYN LLAIN is 217m², which includes four extensions, according to the EPC inspection conducted in March 2025. This puts it in the largest 10% of detached houses houses in Gwalchmai, based on EPC data. The below chart shows the distribution of detached houses houses by size in Gwalchmai, and where TYN LLAIN lies on this distribution: 97% of detached houses houses are smaller than TYN LLAIN, and 3% of houses are larger. Note that EPC data is not available for all properties in Gwalchmai.

TYN LLAIN: Plot and Title Map

TYN LLAIN sits on a plot of roughly 0.209 of an acre, or 846m². The below map shows the location of TYN LLAIN, 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 TYN LLAIN). 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 TYN LLAIN?

TYN LLAIN is located in GWALCHMAI, in the LL65 postcode district. The below map shows the position of TYN LLAIN in GWALCHMAI.