Barn at Folly Farm is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 29 May 1986. Barn.
Barn at Folly Farm
- WRENN ID
- cold-sandstone-marsh
- Grade
- II
- Local Planning Authority
- Dacorum
- Constituency
- Harpenden and Berkhamsted MP: Victoria Collins (LD)
- Country
- England
- Date first listed
- 29 May 1986
- Type
- Barn
- Address
- Barn at Folly Farm, Tring
- OS grid reference
- SP 941 141
- Coordinates
- 51.81766, -0.63612
- Source
- Historic England listing
Description
The barn at Folly Farm is a 17th-century structure built with a timber frame, featuring dark weatherboarding and a steeply pitched old red tile roof. It is a tall, four-bay barn that faces north and includes a gabled porch located in the second bay from the west. There are mortices present for a former partition that once divided off the eastern bay. The barn has jowled posts with unjowled mid-bay posts, and a mid-height rail that is tenoned in-line, along with straight braces connecting to the tie-beams.
The roof is constructed with clasped purlins, having two purlins on each slope. It features a high upper collar with very long queen-struts that rise from the tie-beam, creating a central opening that is convenient for filling the top of the barn. Spur-collars from the queen-struts support the lower clasped purlin, which has a short queen-strut under the joint. The porch has double doors, and there is a winnowing door in the south wall opposite, along with high pitching doors in the adjacent bays. The wallplate displays squint-butted scarf joints, each secured with two edge pegs, while the purlins have single splayed scarf joints over the principals.
Local climate
Barn at Folly Farm 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 77% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 79% of listed buildings.
It experiences an average of 38 freeze-thaw cycles a year, more than 72% of listed buildings. Of these, 18 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
- Sale history — 1 transaction since 2003
- No related consent applications matched
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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