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.
21 CARTER KNOWLE AVENUE is a large extended semi-detached house of 161m², built sometime between 1950 and 1966, which could now be worth an estimated £474,300. It was last sold for £150,000 in November 2002, which was around 103% above the average November 2002 semi-detached price in the Sheffield local authority area. The most recent EPC inspection was February 2023, where the current energy rating was C, and the potential energy rating was C.
Land registry data shows two sales for 21 CARTER KNOWLE AVENUE since 1st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Sheffield local authority area for the corresponding sale date. Both of the two 21 CARTER KNOWLE 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 |
|---|---|---|---|
2002 29 NOV | £150,000 | £73,956 | 103% above HPI |
1999 25 OCT | £85,000 | £50,187 | 69% above HPI |
The below graph shows the average semi-detached house price in the Sheffield local authority area over time, sourced from the HPI. The two 21 CARTER KNOWLE AVENUE sales from October 1999 and November 2002 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 October 1999 sale was for 69% above the HPI. So the extrapolation line tracks at 69% above the HPI over time, until the November 2002 sale, where it rises to 103% above the HPI. The line then continues to track at 103% above the HPI.

21 CARTER KNOWLE AVENUE might now be worth an estimated £474,300.
This is based on house price inflation of 216.2%, between November 2002 and August 2025, for semi-detached houses, in the Sheffield local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 216.2% inflationary increase is applied to the most recent sale price for 21 CARTER KNOWLE AVENUE of £150,000 on 29th November 2002. For the value to have increased from £150,000 to £474,300 over the 23 years and three months to August 2025, the following assumptions must hold true:
21 CARTER KNOWLE AVENUE is 161m², which includes two extensions, according to the EPC inspection conducted in February 2023. This puts it in the largest 30% of semi-detached houses houses in Sheffield, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Sheffield, and where 21 CARTER KNOWLE AVENUE lies on this distribution: 78% of semi-detached houses houses are smaller than 21 CARTER KNOWLE AVENUE, and 21% of houses are larger. Note that EPC data is not available for all properties in Sheffield.

21 CARTER KNOWLE AVENUE sits on a plot of roughly 0.106 of an acre, or 428m². The below map shows the location of 21 CARTER KNOWLE 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 CARTER KNOWLE 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.

21 CARTER KNOWLE AVENUE is located in SHEFFIELD, in the S11 postcode district. The below map shows the position of No. 21 on CARTER KNOWLE AVENUE.

Most recent sales first: