Six Tunnels Farmhouse is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 19 March 1987. Farmhouse. 6 related planning applications.

Six Tunnels Farmhouse

WRENN ID
twelfth-lead-gilt
Grade
II
Local Planning Authority
Dacorum
Constituency
Harpenden and Berkhamsted MP: Victoria Collins (LD)
Country
England
Date first listed
19 March 1987
Type
Farmhouse
Address
Six Tunnels Farmhouse, Gaddesden Row, Great Gaddesden, HP2 6HW
OS grid reference
TL 043 134
Coordinates
51.80976, -0.48805
Source
Historic England listing

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

Description

Six Tunnels Farmhouse is a farmhouse that dates from the early 17th century or possibly earlier. The southern part of the building is brick cased from the 18th century, while the northern wing was brick cased in the 19th century. The southern part of the walls was rebuilt after bomb damage in the 20th century. The farmhouse is constructed of red brick and has a tile roof, with a wooden eaves cornice on the southern part that has been renewed.

This irregular two-storey house faces west and features a southern part that includes a hall, which likely originally extended further to the west. There is an eastern crosswing that projects to the south, containing a cellar below and an external chimney on the eastern wall. This section has hipped roofs, wide casement windows, and exposed old ceiling beams. Extending to the north is a double-pile range that appears to be from the 19th century but has much older origins. At the junction of the two parts, there is a lobby entrance next to a very large and tall chimney made of narrow red bricks, which terminates in six tall octagonal shafts with corbelled caps. The name of the farm, "Six Tunnels," is derived from a verbal corruption of "funnels."

Local climate

Six Tunnels Farmhouse 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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  • No EPC on record for this property
  • No sale records on file
  • Related listed building consents — 6 applications
  • 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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