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.
50 CARMARTHEN AVENUE is a very large extended detached house of 328m², built sometime between 1900 and 1929, which could now be worth an estimated £1,062,792. It was last sold for £595,000 in November 2009, which was around 106% above the average November 2009 detached price in the Portsmouth local authority area. The most recent EPC inspection was July 2019, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows two sales for 50 CARMARTHEN AVENUE since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Portsmouth local authority area for the corresponding sale date. Both of the two 50 CARMARTHEN 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 |
---|---|---|---|
2009 6 NOV | £595,000 | £288,908 | ![]() 106% above HPI |
2006 3 NOV | £500,000 | £284,855 | ![]() 76% above HPI |
The below graph shows the average detached house price in the Portsmouth local authority area over time, sourced from the HPI. The two 50 CARMARTHEN AVENUE sales from November 2006 and November 2009 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 2006 sale was for 76% above the HPI. So the extrapolation line tracks at 76% above the HPI over time, until the November 2009 sale, where it rises to 106% above the HPI. The line then continues to track at 106% above the HPI.
50 CARMARTHEN AVENUE might now be worth an estimated £1,062,792.
This is based on house price inflation of 78.6%, between November 2009 and February 2025, for detached houses, in the Portsmouth local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 78.6% inflationary increase is applied to the most recent sale price for 50 CARMARTHEN AVENUE of £595,000 on 6th November 2009. For the value to have increased from £595,000 to £1,062,792 over the sixteen years and nine months to February 2025, the following assumptions must hold true:
50 CARMARTHEN AVENUE is 328m², which includes three extensions, according to the EPC inspection conducted in July 2019. This puts it in the largest 10% of detached houses houses in Portsmouth, based on EPC data. The below chart shows the distribution of detached houses houses by size in Portsmouth, and where 50 CARMARTHEN AVENUE lies on this distribution: 98% of detached houses houses are smaller than 50 CARMARTHEN AVENUE, and 2% of houses are larger. Note that EPC data is not available for all properties in Portsmouth.
50 CARMARTHEN AVENUE sits on a plot of roughly 0.257 of an acre, or 1,040m². The below map shows the location of 50 CARMARTHEN 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 50 CARMARTHEN 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.
50 CARMARTHEN AVENUE is located in PORTSMOUTH, in the PO6 postcode district. The below map shows the position of No. 50 on CARMARTHEN AVENUE.
Most recent sales first: