9, OLD FRENCH HORN LANE, HATFIELD, AL10 8AH - £500,000

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.

9 OLD FRENCH HORN LANE is a very large semi-detached house of 187m², built sometime between 2003 and 2006, which could now be worth an estimated £939,664. It was last sold for £500,000 in April 2008, which was around 79% above the average April 2008 semi-detached price in the Welwyn Hatfield local authority area. The most recent EPC inspection was January 2025, where the current energy rating was B, and the potential energy rating was A.

9 OLD FRENCH HORN LANE Sold Prices

Land registry data shows two sales for 9 OLD FRENCH HORN LANE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average semi-detached price in the Welwyn Hatfield local authority area for the corresponding sale date. Both of the two 9 OLD FRENCH HORN LANE 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
2008 4 APR	£500,000	£278,724	79% above HPI
2004 29 JUN	£310,000	£244,451	27% above HPI

9 OLD FRENCH HORN LANE Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Welwyn Hatfield local authority area over time, sourced from the HPI. The two 9 OLD FRENCH HORN LANE sales from June 2004 and April 2008 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 June 2004 sale was for 27% above the HPI. So the extrapolation line tracks at 27% above the HPI over time, until the April 2008 sale, where it rises to 79% above the HPI. The line then continues to track at 79% above the HPI.

What might 9 OLD FRENCH HORN LANE be worth now?

9 OLD FRENCH HORN LANE might now be worth an estimated £939,664.

This is based on house price inflation of 87.9%, between April 2008 and March 2025, for semi-detached houses, in the Welwyn Hatfield local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 87.9% inflationary increase is applied to the most recent sale price for 9 OLD FRENCH HORN LANE of £500,000 on 4th April 2008. For the value to have increased from £500,000 to £939,664 over the seventeen years and one month to March 2025, the following assumptions must hold true:

• The value of 9 OLD FRENCH HORN LANE has moved in line with the HPI for semi-detached houses in the Welwyn Hatfield local authority area.
• The April 2008 sale price of £500,000 represented a fair market value for the property.
• The size, condition, and specification of 9 OLD FRENCH HORN LANE has not materially changed since April 2008.

How Large is 9 OLD FRENCH HORN LANE?

9 OLD FRENCH HORN LANE is 187m² according to the EPC inspection conducted in January 2025. This puts it in the largest 20% of semi-detached houses houses in Hatfield, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Hatfield, and where 9 OLD FRENCH HORN LANE lies on this distribution: 89% of semi-detached houses houses are smaller than 9 OLD FRENCH HORN LANE, and 11% of houses are larger. Note that EPC data is not available for all properties in Hatfield.

9 OLD FRENCH HORN LANE: Plot and Title Map

9 OLD FRENCH HORN LANE sits on a plot of roughly 0.112 of an acre, or 454m². The below map shows the location of 9 OLD FRENCH HORN LANE, 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 9 OLD FRENCH HORN LANE). 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 9 OLD FRENCH HORN LANE?

9 OLD FRENCH HORN LANE is located in HATFIELD, in the AL10 postcode district. The below map shows the position of No. 9 on OLD FRENCH HORN LANE.