11, TREM Y CASTELL, CAERPHILLY, CF83 1TH - £88,500

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

11 TREM Y CASTELL is a very small detached house of 74m², built sometime between 1996 and 2002, which could now be worth an estimated £361,609. It was last sold for £88,500 in August 2000, which was around 16% above the average August 2000 detached price in the Caerphilly local authority area. The most recent EPC inspection was March 2014, where the current energy rating was D, and the potential energy rating was B.

11 TREM Y CASTELL Sold Prices

Land registry data shows two sales for 11 TREM Y CASTELL since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Caerphilly local authority area for the corresponding sale date. Both of the two 11 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
2000 8 AUG	£88,500	£76,077	16% above HPI
1996 25 OCT	£74,995	£67,306	11% above HPI

11 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 two 11 TREM Y CASTELL sales from October 1996 and August 2000 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 1996 sale was for 11% above the HPI. So the extrapolation line tracks at 11% above the HPI over time, until the August 2000 sale, where it rises to 16% above the HPI. The line then continues to track at 16% above the HPI.

What might 11 TREM Y CASTELL be worth now?

11 TREM Y CASTELL might now be worth an estimated £361,609.

This is based on house price inflation of 308.6%, between August 2000 and February 2025, for detached houses, in the Caerphilly local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 308.6% inflationary increase is applied to the most recent sale price for 11 TREM Y CASTELL of £88,500 on 8th August 2000. For the value to have increased from £88,500 to £361,609 over the 25 years and six months to February 2025, the following assumptions must hold true:

• The value of 11 TREM Y CASTELL has moved in line with the HPI for detached houses in the Caerphilly local authority area.
• The August 2000 sale price of £88,500 represented a fair market value for the property.
• The size, condition, and specification of 11 TREM Y CASTELL has not materially changed since August 2000.

How Large is 11 TREM Y CASTELL?

11 TREM Y CASTELL is 74m² according to the EPC inspection conducted in March 2014. This puts it in the smallest 20% of detached houses houses in Caerphilly, based on EPC data. The below chart shows the distribution of detached houses houses by size in Caerphilly, and where 11 TREM Y CASTELL lies on this distribution: 11% of detached houses houses are smaller than 11 TREM Y CASTELL, and 88% of houses are larger. Note that EPC data is not available for all properties in Caerphilly.

11 TREM Y CASTELL: Plot and Title Map

11 TREM Y CASTELL sits on a plot of roughly 0.092 of an acre, or 374m². The below map shows the location of 11 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 11 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 11 TREM Y CASTELL?

11 TREM Y CASTELL is located in CAERPHILLY, in the CF83 postcode district. The below map shows the position of No. 11 on TREM Y CASTELL.