11, COSGROVE AVENUE, LEIGH-ON-SEA, SS9 3TZ - £555,000

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

11 COSGROVE AVENUE is a small detached house of 108m², built sometime between 1950 and 1966. It was last sold for £555,000 in May 2019, which was around 4% above the average May 2019 detached price in the Southend-on-Sea local authority area. The most recent EPC inspection was August 2016, where the current energy rating was D, and the potential energy rating was B.

11 COSGROVE AVENUE Sold Prices

Land registry data shows two sales for 11 COSGROVE AVENUE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Southend-on-Sea local authority area for the corresponding sale date. Both of the two 11 COSGROVE AVENUE 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
2019 3 MAY	£555,000	£532,065	4% above HPI
2017 10 JUL	£570,000	£506,655	13% above HPI

11 COSGROVE AVENUE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Southend-on-Sea local authority area over time, sourced from the HPI. The two 11 COSGROVE AVENUE sales from July 2017 and May 2019 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 July 2017 sale was for 13% above the HPI. So the extrapolation line tracks at 13% above the HPI over time, until the May 2019 sale, where it falls to 4% above the HPI. The line then continues to track at 4% above the HPI.

What might 11 COSGROVE AVENUE be worth now?

11 COSGROVE AVENUE might now be worth an estimated £645,994.

This is based on house price inflation of 16.4%, between May 2019 and December 2024, for detached houses, in the Southend-on-Sea local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 16.4% inflationary increase is applied to the most recent sale price for 11 COSGROVE AVENUE of £555,000 on 3rd May 2019. For the value to have increased from £555,000 to £645,994 over the four years and five months to December 2024, the following assumptions must hold true:

• The value of 11 COSGROVE AVENUE has moved in line with the HPI for detached houses in the Southend-on-Sea local authority area.
• The May 2019 sale price of £555,000 represented a fair market value for the property.
• The size, condition, and specification of 11 COSGROVE AVENUE has not materially changed since May 2019.

How Large is 11 COSGROVE AVENUE?

11 COSGROVE AVENUE is 108m² according to the EPC inspection conducted in August 2016. This puts it in the smallest 40% of detached houses houses in Southend-on-Sea, based on EPC data. The below chart shows the distribution of detached houses houses by size in Southend-on-Sea, and where 11 COSGROVE AVENUE lies on this distribution: 38% of detached houses houses are smaller than 11 COSGROVE AVENUE, and 61% of houses are larger. Note that EPC data is not available for all properties in Southend-on-Sea.

11 COSGROVE AVENUE: Plot and Title Map

11 COSGROVE AVENUE sits on a plot of roughly 0.102 of an acre, or 411m². The below map shows the location of 11 COSGROVE 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 11 COSGROVE 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 11 COSGROVE AVENUE?

11 COSGROVE AVENUE is located in LEIGH-ON-SEA, in the SS9 postcode district. The below map shows the position of No. 11 on COSGROVE AVENUE.