11, WINDSOR AVENUE, RADYR, CARDIFF, CF15 8BW - £550,000

Based on the December 2024 Price Paid Data (released on 29th January 2025), the November 2024 House Price Index (released on 15th January 2025), and the December 2024 Energy Performance of Buildings Data (released on 31st January 2025). Sources

11 WINDSOR AVENUE is a very large extended detached house of 218m², built sometime between 1900 and 1929. It was last sold for £550,000 in December 2011, which was around 90% above the average December 2011 detached price in the Cardiff local authority area. The most recent EPC inspection was September 2009, where the current energy rating was D, and the potential energy rating was C.

11 WINDSOR AVENUE Sold Prices

Land registry data shows four sales for 11 WINDSOR 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 Cardiff local authority area for the corresponding sale date. All of the four 11 WINDSOR 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
2011 9 DEC	£550,000	£290,236	90% above HPI
2006 7 MAR	£485,000	£272,932	78% above HPI
2004 22 OCT	£500,000	£273,561	83% above HPI
1996 18 JUL	£175,000	£93,717	87% above HPI

11 WINDSOR AVENUE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Cardiff local authority area over time, sourced from the HPI. The four 11 WINDSOR AVENUE sales between July 1996 and December 2011 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 March 2006 sale was for 78% above the HPI. So the extrapolation line tracks at 78% above the HPI over time, until the December 2011 sale, where it rises to 90% above the HPI. The line then continues to track at 90% above the HPI.

How Large is 11 WINDSOR AVENUE?

11 WINDSOR AVENUE is 218m², which includes two extensions, according to the EPC inspection conducted in September 2009. This puts it in the largest 10% of detached houses in Cardiff, based on EPC data. The below chart shows the distribution of detached houses by size in Cardiff, and where 11 WINDSOR AVENUE lies on this distribution: 93% of detached houses are smaller than 11 WINDSOR AVENUE, and 7% of houses are larger. Note that EPC data is not available for all properties in Cardiff.

11 WINDSOR AVENUE: Plot and Title Map

11 WINDSOR AVENUE sits on a plot of roughly 0.146 of an acre, or 592m². The below map shows the location of 11 WINDSOR 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 11 WINDSOR 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 11 WINDSOR AVENUE?

11 WINDSOR AVENUE is located in RADYR, in the CF15 postcode district. The below map shows the position of No. 11 on WINDSOR AVENUE.