Barn at Six Tunnels Farm, 20 Metres to North of House is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 19 March 1987. Barn.

Barn at Six Tunnels Farm, 20 Metres to North of House

WRENN ID
fossil-tallow-grove
Grade
II
Local Planning Authority
Dacorum
Constituency
Harpenden and Berkhamsted MP: Victoria Collins (LD)
Country
England
Date first listed
19 March 1987
Type
Barn
Address
Barn at Six Tunnels Farm, 20 Metres to North of House, HP2 6HW
OS grid reference
TL 043 134
Coordinates
51.80998, -0.48807
Source
Historic England listing

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

Description

The barn at Six Tunnels Farm, located 20 meters north of the house, dates back to the early 17th century. It features a timber frame, with walls and roof covered in corrugated sheeting, while the end gables are finished with dark weatherboarding. This tall, eight-bay double barn faces north and includes a surviving gabled porch on the north side, positioned at the third bay from the east. It is likely that there was another porch at the third bay from the west end. The barn showcases jowled posts, mid-height rails that are in-line, straight braces to the wallplates, squint-butted scarf joints in the wallplates, straight braces to the tie-beams, and a clasped-purlin roof supported by inclined straight queen-post trusses with straight wind-braces.

Local climate

Barn at Six Tunnels Farm, 20 Metres to North of House sits in a drier-than-average part of the UK, with an average of 730 mm of rain a year. This makes it drier than 78% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 77% of listed buildings.

It experiences an average of 36 freeze-thaw cycles a year, more than 64% of listed buildings. Of these, 17 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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  • 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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