40, HARMER GREEN LANE, WELWYN, AL6 0AT - £1,726,000

Based on the August 2024 Price Paid Data (released on 27th September 2024), the July 2024 House Price Index (released on 18th September 2024), and the August 2024 Energy Performance of Buildings Data (released on 3rd October 2024). Sources

40 HARMER GREEN LANE is a very large extended detached house of 385m², built sometime between 1930 and 1949. It was last sold for £1,726,000 in December 2021, which was around 89% above the average December 2021 detached price in the Welwyn Hatfield local authority area. The most recent EPC inspection was March 2018, where the current energy rating was C, and the potential energy rating was C.

40 HARMER GREEN LANE Sold Prices

Land registry data shows five sales for 40 HARMER GREEN LANE since 1^st January 1995. The below table shows the price paid for the five sales, along with the average detached price in the Welwyn Hatfield local authority area for the corresponding sale date. All of the five 40 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
2021 3 DEC	£1,726,000	£911,443	89% above HPI
2010 30 JUL	£1,240,000	£533,184	133% above HPI
2004 30 APR	£950,000	£439,445	116% above HPI
2002 30 APR	£632,500	£345,379	83% above HPI
1997 7 AUG	£412,500	£201,310	105% above HPI

40 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 five 40 HARMER GREEN LANE sales between August 1997 and December 2021 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 2010 sale was for 133% above the HPI. So the extrapolation line tracks at 133% above the HPI over time, until the December 2021 sale, where it falls to 89% above the HPI. The line then continues to track at 89% above the HPI.

How Large is 40 HARMER GREEN LANE?

40 HARMER GREEN LANE is 385m², which includes two extensions, according to the EPC inspection conducted in March 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 40 HARMER GREEN LANE lies on this distribution: 99% of detached houses are smaller than 40 HARMER GREEN LANE, and 1% of houses are larger. Note that EPC data is not available for all properties in Welwyn Garden City.

40 HARMER GREEN LANE: Plot and Title Map

40 HARMER GREEN LANE sits on a plot of roughly 0.505 of an acre, or 2,044m². The below map shows the location of 40 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 40 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 40 HARMER GREEN LANE?

40 HARMER GREEN LANE is located in WELWYN, in the AL6 postcode district. The below map shows the position of No. 40 on HARMER GREEN LANE.