PENTIRE, NEWPORT ROAD, CASTLETON, CARDIFF, CF3 2UR - £420,000

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.

PENTIRE is a small detached house of 164m², built sometime between 1930 and 1949, which could now be worth an estimated £437,321. It was last sold for £420,000 in June 2025, which was around 8% above the average June 2025 detached price in the Newport local authority area. The most recent EPC inspection was September 2019, where the current energy rating was F, and the potential energy rating was C.

PENTIRE Sold Prices

Land registry data shows three sales for PENTIRE since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Newport local authority area for the corresponding sale date. Two of the three PENTIRE 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 6 JUN	£420,000	£387,601	8% above HPI
2023 17 FEB	£390,000	£386,281	1% above HPI
2021 29 JAN	£250,000	£327,197	24% below HPI

PENTIRE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Newport local authority area over time, sourced from the HPI. The three PENTIRE sales between January 2021 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 February 2023 sale was for 1% above the HPI. So the extrapolation line tracks at 1% above the HPI over time, until the June 2025 sale, where it rises to 8% above the HPI. The line then continues to track at 8% above the HPI.

What might PENTIRE be worth now?

PENTIRE might now be worth an estimated £437,321.

This is based on house price inflation of 4.1%, between June 2025 and April 2026, for detached houses, in the Newport local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 4.1% inflationary increase is applied to the most recent sale price for PENTIRE of £420,000 on 6th June 2025. For the value to have increased from £420,000 to £437,321 over the one year and two months to April 2026, the following assumptions must hold true:

• The value of PENTIRE has moved in line with the HPI for detached houses in the Newport local authority area.
• The June 2025 sale price of £420,000 represented a fair market value for the property.
• The size, condition, and specification of PENTIRE has not materially changed since June 2025.

How Large is PENTIRE?

PENTIRE is 164m² according to the EPC inspection conducted in September 2019. This puts it in the smallest 40% of detached houses houses in Castleton, based on EPC data. The below chart shows the distribution of detached houses houses by size in Castleton, and where PENTIRE lies on this distribution: 39% of detached houses houses are smaller than PENTIRE, and 61% of houses are larger. Note that EPC data is not available for all properties in Castleton.

PENTIRE: Plot and Title Map

PENTIRE sits on a plot of roughly 0.190 of an acre, or 768m². The below map shows the location of PENTIRE, 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 PENTIRE). 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 PENTIRE?

PENTIRE is located on NEWPORT ROAD in CASTLETON, in the CF3 postcode district. The below map shows the position of PENTIRE on NEWPORT ROAD.