21, CALTON AVENUE, HERTFORD, SG14 2ER - £185,000

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 CALTON AVENUE is a very small semi-detached house of 72m², built sometime between 1950 and 1966, which could now be worth an estimated £343,171. It was last sold for £185,000 in December 2009, which was around 33% below the average December 2009 semi-detached price in the East Hertfordshire local authority area. The most recent EPC inspection was June 2009, where the current energy rating was D, and the potential energy rating was C.

21 CALTON AVENUE Sold Prices

Land registry data shows three sales for 21 CALTON AVENUE since 1^st January 1995. The below table shows the price paid for the three sales, along with the average semi-detached price in the East Hertfordshire local authority area for the corresponding sale date. All of the three 21 CALTON 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
2009 23 DEC	£185,000	£276,438	33% below HPI
1997 25 JUL	£71,995	£95,433	25% below HPI
1996 29 NOV	£59,500	£87,008	32% below HPI

21 CALTON AVENUE Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the East Hertfordshire local authority area over time, sourced from the HPI. The three 21 CALTON AVENUE sales between November 1996 and December 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 July 1997 sale was for 25% below the HPI. So the extrapolation line tracks at 25% below the HPI over time, until the December 2009 sale, where it falls to 33% below the HPI. The line then continues to track at 33% below the HPI.

What might 21 CALTON AVENUE be worth now?

21 CALTON AVENUE might now be worth an estimated £343,171.

This is based on house price inflation of 85.5%, between December 2009 and December 2024, for semi-detached houses, in the East Hertfordshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 85.5% inflationary increase is applied to the most recent sale price for 21 CALTON AVENUE of £185,000 on 23rd December 2009. For the value to have increased from £185,000 to £343,171 over the fifteen years to December 2024, the following assumptions must hold true:

• The value of 21 CALTON AVENUE has moved in line with the HPI for semi-detached houses in the East Hertfordshire local authority area.
• The December 2009 sale price of £185,000 represented a fair market value for the property.
• The size, condition, and specification of 21 CALTON AVENUE has not materially changed since December 2009.

How Large is 21 CALTON AVENUE?

21 CALTON AVENUE is 72m² according to the EPC inspection conducted in June 2009. This puts it in the smallest 10% of semi-detached houses houses in Hertford, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Hertford, and where 21 CALTON AVENUE lies on this distribution: 3% of semi-detached houses houses are smaller than 21 CALTON AVENUE, and 97% of houses are larger. Note that EPC data is not available for all properties in Hertford.

21 CALTON AVENUE: Plot and Title Map

21 CALTON AVENUE sits on a plot of roughly 0.088 of an acre, or 357m². The below map shows the location of 21 CALTON 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 CALTON 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 CALTON AVENUE?

21 CALTON AVENUE is located in HERTFORD, in the SG14 postcode district. The below map shows the position of No. 21 on CALTON AVENUE.