4, HAY WAINS, WOOLMER GREEN, KNEBWORTH, SG3 6HW - £585,000

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 HAY WAINS is a very small detached house of 94m², built sometime between 2003 and 2006, which could now be worth an estimated £596,028. It was last sold for £585,000 in January 2024, which was around 36% below the average January 2024 detached price in the Welwyn Hatfield local authority area. The most recent EPC inspection was October 2017, where the current energy rating was D, and the potential energy rating was B.

4 HAY WAINS Sold Prices

Land registry data shows four sales for 4 HAY WAINS since 1^st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the Welwyn Hatfield local authority area for the corresponding sale date. All of the four 4 HAY WAINS 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 12 JAN	£585,000	£920,607	36% below HPI
2018 3 JUL	£486,000	£833,270	42% below HPI
2004 28 OCT	£305,000	£461,720	34% below HPI
2003 4 SEP	£304,950	£436,395	30% below HPI

4 HAY WAINS 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 four 4 HAY WAINS sales between September 2003 and January 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 July 2018 sale was for 42% below the HPI. So the extrapolation line tracks at 42% below the HPI over time, until the January 2024 sale, where it rises to 36% below the HPI. The line then continues to track at 36% below the HPI.

What might 4 HAY WAINS be worth now?

4 HAY WAINS might now be worth an estimated £596,028.

This is based on house price inflation of 1.9%, between January 2024 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 1.9% inflationary increase is applied to the most recent sale price for 4 HAY WAINS of £585,000 on 12th January 2024. For the value to have increased from £585,000 to £596,028 over the eleven months to February 2025, the following assumptions must hold true:

• The value of 4 HAY WAINS has moved in line with the HPI for detached houses in the Welwyn Hatfield local authority area.
• The January 2024 sale price of £585,000 represented a fair market value for the property.
• The size, condition, and specification of 4 HAY WAINS has not materially changed since January 2024.

How Large is 4 HAY WAINS?

4 HAY WAINS is 94m² according to the EPC inspection conducted in October 2017. This puts it in the smallest 20% of detached houses houses in Woolmer Green, based on EPC data. The below chart shows the distribution of detached houses houses by size in Woolmer Green, and where 4 HAY WAINS lies on this distribution: 18% of detached houses houses are smaller than 4 HAY WAINS, and 82% of houses are larger. Note that EPC data is not available for all properties in Woolmer Green.

4 HAY WAINS: Plot and Title Map

4 HAY WAINS sits on a plot of roughly 0.055 of an acre, or 224m². The below map shows the location of 4 HAY WAINS, 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 HAY WAINS). 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 HAY WAINS?

4 HAY WAINS is located in WOOLMER GREEN, in the SG3 postcode district. The below map shows the position of No. 4 on HAY WAINS.