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.
21 DOWNSIDE AVENUE is a small detached house of 90m², built sometime between 1930 and 1949, which could now be worth an estimated £432,583. It was last sold for £375,000 in August 2020, which was around 4% above the average August 2020 detached price in the Southampton local authority area. The most recent EPC inspection was January 2020, where the current energy rating was D, and the potential energy rating was B.
Land registry data shows five sales for 21 DOWNSIDE AVENUE since 1st January 1995. The below table shows the price paid for the five sales, along with the average detached price in the Southampton local authority area for the corresponding sale date. Most of the five 21 DOWNSIDE AVENUE sales were 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 |
---|---|---|---|
2020 28 AUG | £375,000 | £359,054 | ![]() 4% above HPI |
2016 25 NOV | £315,000 | £333,073 | ![]() 5% below HPI |
2006 15 DEC | £220,000 | £243,588 | ![]() 10% below HPI |
2001 12 MAR | £140,000 | £144,859 | ![]() 3% below HPI |
1996 20 DEC | £70,000 | £82,636 | ![]() 15% below HPI |
The below graph shows the average detached house price in the Southampton local authority area over time, sourced from the HPI. The five 21 DOWNSIDE AVENUE sales between December 1996 and August 2020 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 November 2016 sale was for 5% below the HPI. So the extrapolation line tracks at 5% below the HPI over time, until the August 2020 sale, where it rises to 4% above the HPI. The line then continues to track at 4% above the HPI.
21 DOWNSIDE AVENUE might now be worth an estimated £432,583.
This is based on house price inflation of 15.4%, between August 2020 and July 2025, for detached houses, in the Southampton local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 15.4% inflationary increase is applied to the most recent sale price for 21 DOWNSIDE AVENUE of £375,000 on 28th August 2020. For the value to have increased from £375,000 to £432,583 over the five years and one month to July 2025, the following assumptions must hold true:
21 DOWNSIDE AVENUE is 90m² according to the EPC inspection conducted in January 2020. This puts it in the smallest 40% of detached houses houses in Southampton, based on EPC data. The below chart shows the distribution of detached houses houses by size in Southampton, and where 21 DOWNSIDE AVENUE lies on this distribution: 34% of detached houses houses are smaller than 21 DOWNSIDE AVENUE, and 65% of houses are larger. Note that EPC data is not available for all properties in Southampton.
21 DOWNSIDE AVENUE sits on a plot of roughly 0.066 of an acre, or 269m². The below map shows the location of 21 DOWNSIDE 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 21 DOWNSIDE 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.
21 DOWNSIDE AVENUE is located in SOUTHAMPTON, in the SO19 postcode district. The below map shows the position of No. 21 on DOWNSIDE AVENUE.
Most recent sales first: