21, BUTLER AVENUE, HARROW, HA1 4EJ - £543,125

Based on the January 2025 Price Paid Data (released on 3rd March 2025), the December 2024 House Price Index (released on 19th February 2025), and the January 2025 Energy Performance of Buildings Data (released on 27th February 2025). Sources

21 BUTLER AVENUE is a large detached house of 172m², built sometime between 1900 and 1929, which could now be worth an estimated £925,247. It was last sold for £543,125 in June 2012, which was around 22% below the average June 2012 detached price in the Harrow local authority area. The most recent EPC inspection was August 2010, where the current energy rating was F, and the potential energy rating was E.

21 BUTLER AVENUE Sold Prices

Land registry data shows two sales for 21 BUTLER AVENUE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Harrow local authority area for the corresponding sale date. Both of the two 21 BUTLER AVENUE 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
2012 12 JUN	£543,125	£693,130	22% below HPI
1999 2 SEP	£290,000	£313,569	8% below HPI

21 BUTLER AVENUE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Harrow local authority area over time, sourced from the HPI. The two 21 BUTLER AVENUE sales from September 1999 and June 2012 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 September 1999 sale was for 8% below the HPI. So the extrapolation line tracks at 8% below the HPI over time, until the June 2012 sale, where it falls to 22% below the HPI. The line then continues to track at 22% below the HPI.

What might 21 BUTLER AVENUE be worth now?

21 BUTLER AVENUE might now be worth an estimated £925,247.

This is based on house price inflation of 70.4%, between June 2012 and December 2024, for detached houses, in the Harrow local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 70.4% inflationary increase is applied to the most recent sale price for 21 BUTLER AVENUE of £543,125 on 12th June 2012. For the value to have increased from £543,125 to £925,247 over the eleven years and six months to December 2024, the following assumptions must hold true:

• The value of 21 BUTLER AVENUE has moved in line with the HPI for detached houses in the Harrow local authority area.
• The June 2012 sale price of £543,125 represented a fair market value for the property.
• The size, condition, and specification of 21 BUTLER AVENUE has not materially changed since June 2012.

How Large is 21 BUTLER AVENUE?

21 BUTLER AVENUE is 172m² according to the EPC inspection conducted in August 2010. This puts it in the largest 40% of detached houses houses in Harrow, based on EPC data. The below chart shows the distribution of detached houses houses by size in Harrow, and where 21 BUTLER AVENUE lies on this distribution: 70% of detached houses houses are smaller than 21 BUTLER AVENUE, and 30% of houses are larger. Note that EPC data is not available for all properties in Harrow.

21 BUTLER AVENUE: Plot and Title Map

21 BUTLER AVENUE sits on a plot of roughly 0.096 of an acre, or 387m². The below map shows the location of 21 BUTLER 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 21 BUTLER 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 21 BUTLER AVENUE?

21 BUTLER AVENUE is located in HARROW, in the HA1 postcode district. The below map shows the position of No. 21 on BUTLER AVENUE.