Barn on West Side of Yard at Northwood Preparatory School is a Grade II listed building in the Three Rivers local planning authority area, England. First listed on 17 December 1979. Barn. 1 related planning application.

Barn on West Side of Yard at Northwood Preparatory School

WRENN ID
upper-trefoil-grove
Grade
II
Local Planning Authority
Three Rivers
Constituency
South West Hertfordshire MP: Mr Gagan Mohindra (Con)
Country
England
Date first listed
17 December 1979
Type
Barn
Address
Barn on West Side of Yard at Northwood Preparatory School, Sandy Lodge Lane, Batchworth
OS grid reference
TQ 082 939
Coordinates
51.63375, -0.4373
Source
Historic England listing

Also on this page: related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The building is a barn located on the west side of the yard at Northwood Preparatory School, originally constructed in the 17th century and altered around 1980. It features a timber frame with a brick base and is weatherboarded with a tiled roof. The barn consists of five bays, with a central gabled midstrey and a roof that is hipped to the north. To the south, there is a two-storey former granary that spans two bays. Vertical fixed windows and rooflights were added during the 1980 alterations. Inside, the southern end has been converted into offices, while the original frame and walling have been retained. The interior includes straight braces to the tie beams, angled queen struts clasping the purlins, inserted collars, and curved braces in the granary.

Local climate

Barn on West Side of Yard at Northwood Preparatory School sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 93% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 91% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% of listed buildings. Of these, 13 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • No EPC on record for this property
  • No sale records on file
  • Related listed building consents — 1 application
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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