355, BLACKFEN ROAD, SIDCUP, DA15 9NJ - £372,500

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.

355 BLACKFEN ROAD is a very small semi-detached house of 89m², built sometime between 1930 and 1949, which could now be worth an estimated £455,975. It was last sold for £372,500 in November 2018, which was around 14% below the average November 2018 semi-detached price in the Bexley local authority area. The most recent EPC inspection was June 2026, where the current energy rating was D, and the potential energy rating was C.

355 BLACKFEN ROAD Sold Prices

Land registry data shows three sales for 355 BLACKFEN ROAD since 1^st January 1995. The below table shows the price paid for the three sales, along with the average semi-detached price in the Bexley local authority area for the corresponding sale date. All of the three 355 BLACKFEN ROAD 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
2018 12 NOV	£372,500	£431,043	14% below HPI
2013 2 AUG	£225,000	£264,280	15% below HPI
1995 12 MAY	£78,000	£79,483	2% below HPI

355 BLACKFEN ROAD 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 three 355 BLACKFEN ROAD sales between May 1995 and November 2018 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 2013 sale was for 15% below the HPI. So the extrapolation line tracks at 15% below the HPI over time, until the November 2018 sale, where it rises to 14% below the HPI. The line then continues to track at 14% below the HPI.

What might 355 BLACKFEN ROAD be worth now?

355 BLACKFEN ROAD might now be worth an estimated £455,975.

This is based on house price inflation of 22.4%, between November 2018 and May 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 22.4% inflationary increase is applied to the most recent sale price for 355 BLACKFEN ROAD of £372,500 on 12th November 2018. For the value to have increased from £372,500 to £455,975 over the eight years and six months to May 2026, the following assumptions must hold true:

• The value of 355 BLACKFEN ROAD has moved in line with the HPI for semi-detached houses in the Bexley local authority area.
• The November 2018 sale price of £372,500 represented a fair market value for the property.
• The size, condition, and specification of 355 BLACKFEN ROAD has not materially changed since November 2018.

How Large is 355 BLACKFEN ROAD?

355 BLACKFEN ROAD is 89m² according to the EPC inspection conducted in June 2026. This puts it in the smallest 20% of semi-detached houses houses in London, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in London, and where 355 BLACKFEN ROAD lies on this distribution: 12% of semi-detached houses houses are smaller than 355 BLACKFEN ROAD, and 88% of houses are larger. Note that EPC data is not available for all properties in London.

355 BLACKFEN ROAD: Plot and Title Map

355 BLACKFEN ROAD sits on a plot of roughly 0.094 of an acre, or 381m². The below map shows the location of 355 BLACKFEN ROAD, 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 355 BLACKFEN ROAD). 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 355 BLACKFEN ROAD?

355 BLACKFEN ROAD is located in SIDCUP, in the DA15 postcode district. The below map shows the position of No. 355 on BLACKFEN ROAD.