8, CASTLEMAINE AVENUE, EPSOM, KT17 2RA - £965,000

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

8 CASTLEMAINE AVENUE is a very large extended detached house of 215m², built sometime between 1930 and 1949, which could now be worth an estimated £1,143,199. It was last sold for £965,000 in July 2017, which was around 20% above the average July 2017 detached price in the Epsom and Ewell local authority area. The most recent EPC inspection was May 2017, where the current energy rating was D, and the potential energy rating was C.

8 CASTLEMAINE AVENUE Sold Prices

Land registry data shows three sales for 8 CASTLEMAINE AVENUE since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Epsom and Ewell local authority area for the corresponding sale date. The three 8 CASTLEMAINE AVENUE sales were a mix of above the average price, and roughly equal to 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
2017 25 JUL	£965,000	£804,025	20% above HPI
2008 31 OCT	£625,000	£480,440	30% above HPI
2007 1 MAR	£465,000	£467,100	Close to HPI

8 CASTLEMAINE AVENUE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Epsom and Ewell local authority area over time, sourced from the HPI. The three 8 CASTLEMAINE AVENUE sales between March 2007 and July 2017 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 2008 sale was for 30% above the HPI. So the extrapolation line tracks at 30% above the HPI over time, until the July 2017 sale, where it falls to 20% above the HPI. The line then continues to track at 20% above the HPI.

What might 8 CASTLEMAINE AVENUE be worth now?

8 CASTLEMAINE AVENUE might now be worth an estimated £1,143,199.

This is based on house price inflation of 18.5%, between July 2017 and February 2025, for detached houses, in the Epsom and Ewell local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 18.5% inflationary increase is applied to the most recent sale price for 8 CASTLEMAINE AVENUE of £965,000 on 25th July 2017. For the value to have increased from £965,000 to £1,143,199 over the eight years and five months to February 2025, the following assumptions must hold true:

• The value of 8 CASTLEMAINE AVENUE has moved in line with the HPI for detached houses in the Epsom and Ewell local authority area.
• The July 2017 sale price of £965,000 represented a fair market value for the property.
• The size, condition, and specification of 8 CASTLEMAINE AVENUE has not materially changed since July 2017.

How Large is 8 CASTLEMAINE AVENUE?

8 CASTLEMAINE AVENUE is 215m², which includes one extension, according to the EPC inspection conducted in May 2017. This puts it in the largest 10% of detached houses houses in Ewell, based on EPC data. The below chart shows the distribution of detached houses houses by size in Ewell, and where 8 CASTLEMAINE AVENUE lies on this distribution: 90% of detached houses houses are smaller than 8 CASTLEMAINE AVENUE, and 9% of houses are larger. Note that EPC data is not available for all properties in Ewell.

8 CASTLEMAINE AVENUE: Plot and Title Map

8 CASTLEMAINE AVENUE sits on a plot of roughly 0.149 of an acre, or 603m². The below map shows the location of 8 CASTLEMAINE AVENUE, 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 8 CASTLEMAINE AVENUE). 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 8 CASTLEMAINE AVENUE?

8 CASTLEMAINE AVENUE is located in EPSOM, in the KT17 postcode district. The below map shows the position of No. 8 on CASTLEMAINE AVENUE.