Haydown Farmhouse is a Grade II listed building in the Test Valley local planning authority area, England. First listed on 27 November 1984. Farmhouse. 1 related planning application.

Haydown Farmhouse

WRENN ID
half-casement-thunder
Grade
II
Local Planning Authority
Test Valley
Constituency
Romsey and Southampton North MP: Caroline Nokes (Con)
Country
England
Date first listed
27 November 1984
Type
Farmhouse
Address
Haydown Farmhouse, Farley Street, Nether Wallop, SO20 8EQ
OS grid reference
SU 293 375
Coordinates
51.13664, -1.58119
Source
Historic England listing

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

Description

Haydown Farmhouse is a farmhouse dating from the early 16th century, with a floor inserted in the 17th century, encased in brick in the 18th century, and altered in the 20th century. It features a timber frame with colourwashed brick infill and encasing, topped with an old plain tile roof. The building is two storeys high and consists of four bays from the 16th century, with an 18th-century wing at the rear of the left bay and a 20th-century bay to its left. The roadside elevation is brick, featuring an 18th-century three-light segmental-headed leafed casement window in the right bay and another three-light casement window in an eyebrow dormer above the third bay from the right. In the bay between, where a door would typically be, there is a two-light segmental-headed casement. The roof is hipped steeply to the right, with a large ridge stack positioned over where the door would have been. The timber frame is exposed on the first floor at the ends and on the far side, and internally, there is an exposed beam end of the inserted floor above the tie. The farmhouse also contains 17th-century fireplaces made of reused dressed stone.

Local climate

Haydown Farmhouse receives an average of 780 mm of rain a year. This makes it drier than 62% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 59% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 62% of listed buildings. Of these, 12 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
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  • 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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  6. Old Cottage Grade II 434 m
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  8. Brewery House Grade II 492 m
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