18, THE WARREN, CARSHALTON, SM5 4EH - £1,470,000

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

18 THE WARREN is a very large extended detached house of 415m², built sometime between 1991 and 1995, which could now be worth an estimated £1,651,856. It was last sold for £1,470,000 in March 2021, which was around 66% above the average March 2021 detached price in the Sutton local authority area. The most recent EPC inspection was August 2020, where the current energy rating was C, and the potential energy rating was B.

18 THE WARREN Sold Prices

Land registry data shows two sales for 18 THE WARREN since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Sutton local authority area for the corresponding sale date. One of the two 18 THE WARREN sales was for above the average price, whilst the other 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
2021 5 MAR	£1,470,000	£886,968	66% above HPI
2017 16 OCT	£780,000	£852,083	8% below HPI

18 THE WARREN Price Paid vs. HPI Average

The below graph shows the average detached house price in the Sutton local authority area over time, sourced from the HPI. The two 18 THE WARREN sales from October 2017 and March 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 October 2017 sale was for 8% below the HPI. So the extrapolation line tracks at 8% below the HPI over time, until the March 2021 sale, where it rises to 66% above the HPI. The line then continues to track at 66% above the HPI.

What might 18 THE WARREN be worth now?

18 THE WARREN might now be worth an estimated £1,651,856.

This is based on house price inflation of 12.4%, between March 2021 and February 2025, for detached houses, in the Sutton local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 12.4% inflationary increase is applied to the most recent sale price for 18 THE WARREN of £1,470,000 on 5th March 2021. For the value to have increased from £1,470,000 to £1,651,856 over the four years and one month to February 2025, the following assumptions must hold true:

• The value of 18 THE WARREN has moved in line with the HPI for detached houses in the Sutton local authority area.
• The March 2021 sale price of £1,470,000 represented a fair market value for the property.
• The size, condition, and specification of 18 THE WARREN has not materially changed since March 2021.

How Large is 18 THE WARREN?

18 THE WARREN is 415m², which includes two extensions, according to the EPC inspection conducted in August 2020. This puts it in the largest 10% of detached houses houses in London, based on EPC data. The below chart shows the distribution of detached houses houses by size in London, and where 18 THE WARREN lies on this distribution: 97% of detached houses houses are smaller than 18 THE WARREN, and 3% of houses are larger. Note that EPC data is not available for all properties in London.

18 THE WARREN: Plot and Title Map

18 THE WARREN sits on a plot of roughly 0.380 of an acre, or 1,539m². The below map shows the location of 18 THE WARREN, 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 THE WARREN). 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 THE WARREN?

18 THE WARREN is located in CARSHALTON, in the SM5 postcode district. The below map shows the position of No. 18 on THE WARREN.