18, TREM Y CASTELL, CAERPHILLY, CF83 1TH - £207,000

Based on the December 2024 Price Paid Data (released on 29th January 2025), the November 2024 House Price Index (released on 15th January 2025), and the December 2024 Energy Performance of Buildings Data (released on 31st January 2025). Sources

18 TREM Y CASTELL is a midsized extended detached house of 103m², built sometime between 1996 and 2002. It was last sold for £207,000 in October 2007, which was around 7% above the average October 2007 detached price in the Caerphilly local authority area. The most recent EPC inspection was April 2024, where the current energy rating was B, and the potential energy rating was B.

18 TREM Y CASTELL Sold Prices

Land registry data shows three sales for 18 TREM Y CASTELL since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Caerphilly local authority area for the corresponding sale date. All of the three 18 TREM Y CASTELL sales were for above 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
2007 23 OCT	£207,000	£193,263	7% above HPI
2002 12 APR	£115,000	£90,469	27% above HPI
1996 29 NOV	£81,495	£69,027	18% above HPI

18 TREM Y CASTELL Price Paid vs. HPI Average

The below graph shows the average detached house price in the Caerphilly local authority area over time, sourced from the HPI. The three 18 TREM Y CASTELL sales between November 1996 and October 2007 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 April 2002 sale was for 27% above the HPI. So the extrapolation line tracks at 27% above the HPI over time, until the October 2007 sale, where it falls to 7% above the HPI. The line then continues to track at 7% above the HPI.

How Large is 18 TREM Y CASTELL?

18 TREM Y CASTELL is 103m², which includes one extension, according to the EPC inspection conducted in April 2024. This puts it in the smallest 50% of detached houses in Caerphilly, based on EPC data. The below chart shows the distribution of detached houses by size in Caerphilly, and where 18 TREM Y CASTELL lies on this distribution: 44% of detached houses are smaller than 18 TREM Y CASTELL, and 55% of houses are larger. Note that EPC data is not available for all properties in Caerphilly.

18 TREM Y CASTELL: Plot and Title Map

18 TREM Y CASTELL sits on a plot of roughly 0.049 of an acre, or 198m². The below map shows the location of 18 TREM Y CASTELL, 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 18 TREM Y CASTELL). 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 18 TREM Y CASTELL?

18 TREM Y CASTELL is located in CAERPHILLY, in the CF83 postcode district. The below map shows the position of No. 18 on TREM Y CASTELL.