17, PORTSDOWN AVENUE, LONDON, NW11 0NH - £1,400,000

Based on the September 2024 Price Paid Data (released on 28th October 2024), the August 2024 House Price Index (released on 16th October 2024), and the September 2024 Energy Performance of Buildings Data (released on 31st October 2024). Sources

17 PORTSDOWN AVENUE is a midsized detached house of 161m², built sometime between 1930 and 1949. It was last sold for £1,400,000 in February 2021, which was around 10% above the average February 2021 detached price in the Barnet local authority area. The most recent EPC inspection was April 2016, where the current energy rating was E, and the potential energy rating was C.

17 PORTSDOWN AVENUE Sold Prices

Land registry data shows four sales for 17 PORTSDOWN AVENUE since 1^st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the Barnet local authority area for the corresponding sale date. Two of the four 17 PORTSDOWN AVENUE sales were for above the average price, whilst one 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
2021 1 FEB	£1,400,000	£1,271,584	10% above HPI
2016 19 DEC	£1,300,000	£1,196,164	9% above HPI
1997 25 JUN	£250,000	£249,775	Close to HPI
1995 29 SEP	£174,000	£218,003	20% below HPI

17 PORTSDOWN AVENUE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Barnet local authority area over time, sourced from the HPI. The four 17 PORTSDOWN AVENUE sales between September 1995 and February 2021 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 December 2016 sale was for 9% above the HPI. So the extrapolation line tracks at 9% above the HPI over time, until the February 2021 sale, where it rises to 10% above the HPI. The line then continues to track at 10% above the HPI.

How Large is 17 PORTSDOWN AVENUE?

17 PORTSDOWN AVENUE is 161m² according to the EPC inspection conducted in April 2016. This puts it in the largest 50% of detached houses in London, based on EPC data. The below chart shows the distribution of detached houses by size in London, and where 17 PORTSDOWN AVENUE lies on this distribution: 59% of detached houses are smaller than 17 PORTSDOWN AVENUE, and 40% of houses are larger. Note that EPC data is not available for all properties in London.

17 PORTSDOWN AVENUE: Plot and Title Map

17 PORTSDOWN AVENUE sits on a plot of roughly 0.086 of an acre, or 349m². The below map shows the location of 17 PORTSDOWN 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 17 PORTSDOWN 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 17 PORTSDOWN AVENUE?

17 PORTSDOWN AVENUE is located in LONDON, in the NW11 postcode district. The below map shows the position of No. 17 on PORTSDOWN AVENUE.