Barn to North West of Bourne Farm House is a Grade II listed building in the Hillingdon local planning authority area, England. First listed on 22 August 1979. Barn.

Barn to North West of Bourne Farm House

WRENN ID
lunar-glass-lichen
Grade
II
Local Planning Authority
Hillingdon
Constituency
Ruislip, Northwood and Pinner MP: David Simmonds (Con)
Country
England
Date first listed
22 August 1979
Type
Barn
Address
Barn to North West of Bourne Farm House, Breakspears Road North
OS grid reference
TQ 064 897
Coordinates
51.59649, -0.46387
Source
Historic England listing

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

Description

This is a 17th century timber-framed threshing barn located to the northwest of Bourne Farm House on Breakspears Road North in Harefield. The barn is weatherboarded and features a clay tile roof. It consists of five bays, with two bays on either side of the threshing floor, which has one lipped porch entrance and one gabled entrance. The wall framing includes swell-head posts, fairly wide-set uprights, and a half rail. The roof is supported by queen post trusses with arch-braced tie beams, and there are two levels of purlins with wind braces. There are also later aisle extensions.

Local climate

Barn to North West of Bourne Farm House 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 91% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 88% of listed buildings.

It experiences an average of 28 freeze-thaw cycles a year, fewer than 69% 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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