20, MARTINGALE, BENFLEET, SS7 3DP - £550,000

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

20 MARTINGALE is a large detached house of 158m², built sometime between 1983 and 1990, which could now be worth an estimated £694,635. It was last sold for £550,000 in February 2017, which was around 44% above the average February 2017 detached price in the Castle Point local authority area. The most recent EPC inspection was October 2016, where the current energy rating was D, and the potential energy rating was B.

20 MARTINGALE Sold Prices

Land registry data shows five sales for 20 MARTINGALE since 1^st January 1995. The below table shows the price paid for the five sales, along with the average detached price in the Castle Point local authority area for the corresponding sale date. All of the five 20 MARTINGALE 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
2017 17 FEB	£550,000	£380,683	44% above HPI
2008 4 AUG	£417,500	£261,571	60% above HPI
2003 5 DEC	£346,250	£222,549	56% above HPI
1999 30 APR	£181,000	£100,121	81% above HPI
1996 29 FEB	£120,000	£75,739	58% above HPI

20 MARTINGALE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Castle Point local authority area over time, sourced from the HPI. The five 20 MARTINGALE sales between February 1996 and February 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 August 2008 sale was for 60% above the HPI. So the extrapolation line tracks at 60% above the HPI over time, until the February 2017 sale, where it falls to 44% above the HPI. The line then continues to track at 44% above the HPI.

What might 20 MARTINGALE be worth now?

20 MARTINGALE might now be worth an estimated £694,635.

This is based on house price inflation of 26.3%, between February 2017 and December 2024, for detached houses, in the Castle Point local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 26.3% inflationary increase is applied to the most recent sale price for 20 MARTINGALE of £550,000 on 17th February 2017. For the value to have increased from £550,000 to £694,635 over the six years and two months to December 2024, the following assumptions must hold true:

• The value of 20 MARTINGALE has moved in line with the HPI for detached houses in the Castle Point local authority area.
• The February 2017 sale price of £550,000 represented a fair market value for the property.
• The size, condition, and specification of 20 MARTINGALE has not materially changed since February 2017.

How Large is 20 MARTINGALE?

20 MARTINGALE is 158m² according to the EPC inspection conducted in October 2016. This puts it in the largest 30% of detached houses houses in Thundersley, based on EPC data. The below chart shows the distribution of detached houses houses by size in Thundersley, and where 20 MARTINGALE lies on this distribution: 78% of detached houses houses are smaller than 20 MARTINGALE, and 21% of houses are larger. Note that EPC data is not available for all properties in Thundersley.

20 MARTINGALE: Plot and Title Map

20 MARTINGALE sits on a plot of roughly 0.088 of an acre, or 356m². The below map shows the location of 20 MARTINGALE, 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 20 MARTINGALE). 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 20 MARTINGALE?

20 MARTINGALE is located in BENFLEET, in the SS7 postcode district. The below map shows the position of No. 20 on MARTINGALE.