4, HARMER DELL, WELWYN, AL6 0BE - £1,145,000

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.

4 HARMER DELL is a very large extended detached house of 248m², built sometime between 1976 and 1982, which could now be worth an estimated £1,260,322. It was last sold for £1,145,000 in October 2019, which was around 34% above the average October 2019 detached price in the Welwyn Hatfield local authority area. The most recent EPC inspection was August 2016, where the current energy rating was C, and the potential energy rating was C.

4 HARMER DELL Sold Prices

Land registry data shows two sales for 4 HARMER DELL since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Welwyn Hatfield local authority area for the corresponding sale date. Both of the two 4 HARMER DELL 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
2019 25 OCT	£1,145,000	£852,136	34% above HPI
1996 27 SEP	£330,000	£172,645	91% above HPI

4 HARMER DELL Price Paid vs. HPI Average

The below graph shows the average detached house price in the Welwyn Hatfield local authority area over time, sourced from the HPI. The two 4 HARMER DELL sales from September 1996 and October 2019 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 1996 sale was for 91% above the HPI. So the extrapolation line tracks at 91% above the HPI over time, until the October 2019 sale, where it falls to 34% above the HPI. The line then continues to track at 34% above the HPI.

What might 4 HARMER DELL be worth now?

4 HARMER DELL might now be worth an estimated £1,260,322.

This is based on house price inflation of 10.1%, between October 2019 and February 2025, for 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 10.1% inflationary increase is applied to the most recent sale price for 4 HARMER DELL of £1,145,000 on 25th October 2019. For the value to have increased from £1,145,000 to £1,260,322 over the six years and eight months to February 2025, the following assumptions must hold true:

• The value of 4 HARMER DELL has moved in line with the HPI for detached houses in the Welwyn Hatfield local authority area.
• The October 2019 sale price of £1,145,000 represented a fair market value for the property.
• The size, condition, and specification of 4 HARMER DELL has not materially changed since October 2019.

How Large is 4 HARMER DELL?

4 HARMER DELL is 248m², which includes two extensions, according to the EPC inspection conducted in August 2016. This puts it in the largest 10% of detached houses houses in Welwyn Garden City, based on EPC data. The below chart shows the distribution of detached houses houses by size in Welwyn Garden City, and where 4 HARMER DELL lies on this distribution: 95% of detached houses houses are smaller than 4 HARMER DELL, and 5% of houses are larger. Note that EPC data is not available for all properties in Welwyn Garden City.

4 HARMER DELL: Plot and Title Map

4 HARMER DELL sits on a plot of roughly 0.404 of an acre, or 1,633m². The below map shows the location of 4 HARMER DELL, 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 4 HARMER DELL). 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 4 HARMER DELL?

4 HARMER DELL is located in WELWYN, in the AL6 postcode district. The below map shows the position of No. 4 on HARMER DELL.