PEN Y GARTH, RED HILL, MOUNT ROAD, ST ASAPH, LL17 0DF - £410,000

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.

PEN Y GARTH is a very large extended detached house of 209m², built sometime between 1950 and 1966, which could now be worth an estimated £467,137. It was last sold for £410,000 in June 2021, which was around 78% above the average June 2021 detached price in the Denbighshire local authority area. The most recent EPC inspection was November 2025, where the current energy rating was D, and the potential energy rating was C.

PEN Y GARTH Sold Prices

Land registry data shows two sales for PEN Y GARTH since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Denbighshire local authority area for the corresponding sale date. Both of the two PEN Y GARTH 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
2021 1 JUN	£410,000	£230,264	78% above HPI
1997 30 APR	£93,000	£60,814	53% above HPI

PEN Y GARTH Price Paid vs. HPI Average

The below graph shows the average detached house price in the Denbighshire local authority area over time, sourced from the HPI. The two PEN Y GARTH sales from April 1997 and June 2021 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 1997 sale was for 53% above the HPI. So the extrapolation line tracks at 53% above the HPI over time, until the June 2021 sale, where it rises to 78% above the HPI. The line then continues to track at 78% above the HPI.

What might PEN Y GARTH be worth now?

PEN Y GARTH might now be worth an estimated £467,137.

This is based on house price inflation of 13.9%, between June 2021 and October 2025, for detached houses, in the Denbighshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 13.9% inflationary increase is applied to the most recent sale price for PEN Y GARTH of £410,000 on 1st June 2021. For the value to have increased from £410,000 to £467,137 over the three years and eight months to October 2025, the following assumptions must hold true:

• The value of PEN Y GARTH has moved in line with the HPI for detached houses in the Denbighshire local authority area.
• The June 2021 sale price of £410,000 represented a fair market value for the property.
• The size, condition, and specification of PEN Y GARTH has not materially changed since June 2021.

How Large is PEN Y GARTH?

PEN Y GARTH is 209m², which includes two extensions, according to the EPC inspection conducted in November 2025. This puts it in the largest 10% of detached houses houses in St Asaph, based on EPC data. The below chart shows the distribution of detached houses houses by size in St Asaph, and where PEN Y GARTH lies on this distribution: 92% of detached houses houses are smaller than PEN Y GARTH, and 7% of houses are larger. Note that EPC data is not available for all properties in St Asaph.

Where is PEN Y GARTH?

PEN Y GARTH, RED HILL is located on MOUNT ROAD in ST ASAPH, in the LL17 postcode district. The below map shows the position of PEN Y GARTH, RED HILL on MOUNT ROAD.