20, ONSLOW DRIVE, SIDCUP, DA14 4PB - £545,000

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.

20 ONSLOW DRIVE is a very small extended semi-detached house of 88m², built sometime between 1930 and 1949, which could now be worth an estimated £556,508. It was last sold for £545,000 in January 2025, which was around 6% above the average January 2025 semi-detached price in the Bexley local authority area. The most recent EPC inspection was April 2022, where the current energy rating was D, and the potential energy rating was B.

20 ONSLOW DRIVE Sold Prices

Land registry data shows two sales for 20 ONSLOW DRIVE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Bexley local authority area for the corresponding sale date. One of the two 20 ONSLOW DRIVE 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
2025 31 JAN	£545,000	£516,215	6% above HPI
2012 17 AUG	£189,904	£253,420	25% below HPI

20 ONSLOW DRIVE Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Bexley local authority area over time, sourced from the HPI. The two 20 ONSLOW DRIVE sales from August 2012 and January 2025 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 2012 sale was for 25% below the HPI. So the extrapolation line tracks at 25% below the HPI over time, until the January 2025 sale, where it rises to 6% above the HPI. The line then continues to track at 6% above the HPI.

What might 20 ONSLOW DRIVE be worth now?

20 ONSLOW DRIVE might now be worth an estimated £556,508.

This is based on house price inflation of 2.1%, between January 2025 and April 2026, for semi-detached houses, in the Bexley local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 2.1% inflationary increase is applied to the most recent sale price for 20 ONSLOW DRIVE of £545,000 on 31st January 2025. For the value to have increased from £545,000 to £556,508 over the nine months to April 2026, the following assumptions must hold true:

• The value of 20 ONSLOW DRIVE has moved in line with the HPI for semi-detached houses in the Bexley local authority area.
• The January 2025 sale price of £545,000 represented a fair market value for the property.
• The size, condition, and specification of 20 ONSLOW DRIVE has not materially changed since January 2025.

How Large is 20 ONSLOW DRIVE?

20 ONSLOW DRIVE is 88m², which includes one extension, according to the EPC inspection conducted in April 2022. This puts it in the smallest 20% of semi-detached houses houses in Sidcup, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Sidcup, and where 20 ONSLOW DRIVE lies on this distribution: 11% of semi-detached houses houses are smaller than 20 ONSLOW DRIVE, and 88% of houses are larger. Note that EPC data is not available for all properties in Sidcup.

20 ONSLOW DRIVE: Plot and Title Map

20 ONSLOW DRIVE sits on a plot of roughly 0.127 of an acre, or 514m². The below map shows the location of 20 ONSLOW DRIVE, 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 ONSLOW DRIVE). 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 ONSLOW DRIVE?

20 ONSLOW DRIVE is located in SIDCUP, in the DA14 postcode district. The below map shows the position of No. 20 on ONSLOW DRIVE.