28, THURNALL AVENUE, ROYSTON, SG8 9ER - £430,000

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.

28 THURNALL AVENUE is a very small extended semi-detached house of 80m², built sometime between 1983 and 1990, which could now be worth an estimated £450,459. It was last sold for £430,000 in April 2024, which was around 2% below the average April 2024 semi-detached price in the North Hertfordshire local authority area. The most recent EPC inspection was January 2024, where the current energy rating was C, and the potential energy rating was B.

28 THURNALL AVENUE Sold Prices

Land registry data shows three sales for 28 THURNALL 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 North Hertfordshire local authority area for the corresponding sale date. All of the three 28 THURNALL 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
2024 19 APR	£430,000	£438,594	2% below HPI
2013 25 APR	£219,000	£254,191	14% below HPI
2003 6 AUG	£169,000	£192,596	12% below HPI

28 THURNALL AVENUE Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the North Hertfordshire local authority area over time, sourced from the HPI. The three 28 THURNALL AVENUE sales between August 2003 and April 2024 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 April 2013 sale was for 14% below the HPI. So the extrapolation line tracks at 14% below the HPI over time, until the April 2024 sale, where it rises to 2% below the HPI. The line then continues to track at 2% below the HPI.

What might 28 THURNALL AVENUE be worth now?

28 THURNALL AVENUE might now be worth an estimated £450,459.

This is based on house price inflation of 4.8%, between April 2024 and July 2025, for semi-detached houses, in the North Hertfordshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 4.8% inflationary increase is applied to the most recent sale price for 28 THURNALL AVENUE of £430,000 on 19th April 2024. For the value to have increased from £430,000 to £450,459 over the nine months to July 2025, the following assumptions must hold true:

• The value of 28 THURNALL AVENUE has moved in line with the HPI for semi-detached houses in the North Hertfordshire local authority area.
• The April 2024 sale price of £430,000 represented a fair market value for the property.
• The size, condition, and specification of 28 THURNALL AVENUE has not materially changed since April 2024.

How Large is 28 THURNALL AVENUE?

28 THURNALL AVENUE is 80m², which includes one extension, according to the EPC inspection conducted in January 2024. This puts it in the smallest 10% of semi-detached houses houses in Royston, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Royston, and where 28 THURNALL AVENUE lies on this distribution: 7% of semi-detached houses houses are smaller than 28 THURNALL AVENUE, and 92% of houses are larger. Note that EPC data is not available for all properties in Royston.

28 THURNALL AVENUE: Plot and Title Map

28 THURNALL AVENUE sits on a plot of roughly 0.098 of an acre, or 395m². The below map shows the location of 28 THURNALL 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 28 THURNALL 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 28 THURNALL AVENUE?

28 THURNALL AVENUE is located in ROYSTON, in the SG8 postcode district. The below map shows the position of No. 28 on THURNALL AVENUE.