48A, HARMER GREEN LANE, WELWYN, AL6 0AT - £1,885,000

Based on the December 2024 Price Paid Data (released on 29th January 2025), the November 2024 House Price Index (released on 15th January 2025), and the December 2024 Energy Performance of Buildings Data (released on 31st January 2025). Sources

48A HARMER GREEN LANE is a very large extended detached house of 353m², built sometime from 2007 onwards. It was last sold for £1,885,000 in October 2018, which was around 130% above the average October 2018 detached price in the Welwyn Hatfield local authority area. The most recent EPC inspection was August 2018, where the current energy rating was C, and the potential energy rating was B.

48A HARMER GREEN LANE Sold Prices

Land registry data shows two sales for 48A HARMER GREEN LANE 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 48A HARMER GREEN 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
2018 5 OCT	£1,885,000	£819,800	130% above HPI
2008 28 APR	£905,000	£501,300	81% above HPI

48A HARMER GREEN LANE 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 48A HARMER GREEN LANE sales from April 2008 and October 2018 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 2008 sale was for 81% above the HPI. So the extrapolation line tracks at 81% above the HPI over time, until the October 2018 sale, where it rises to 130% above the HPI. The line then continues to track at 130% above the HPI.

How Large is 48A HARMER GREEN LANE?

48A HARMER GREEN LANE is 353m², which includes one extension, according to the EPC inspection conducted in August 2018. This puts it in the largest 10% of detached houses in Welwyn Garden City, based on EPC data. The below chart shows the distribution of detached houses by size in Welwyn Garden City, and where 48A HARMER GREEN LANE lies on this distribution: 99% of detached houses are smaller than 48A HARMER GREEN LANE, and 1% of houses are larger. Note that EPC data is not available for all properties in Welwyn Garden City.

48A HARMER GREEN LANE: Plot and Title Map

48A HARMER GREEN LANE sits on a plot of roughly 0.521 of an acre, or 2,109m². The below map shows the location of 48A HARMER GREEN 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 48A HARMER GREEN 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 48A HARMER GREEN LANE?

48A HARMER GREEN LANE is located in WELWYN, in the AL6 postcode district. The below map shows the position of No. 48A on HARMER GREEN LANE.