Walnut Tree Farmhouse is a Grade II listed building in the North Hertfordshire local planning authority area, England. First listed on 27 May 1968. Farmhouse. 6 related planning applications.

Walnut Tree Farmhouse

WRENN ID
empty-courtyard-evening
Grade
II
Local Planning Authority
North Hertfordshire
Constituency
Hitchin MP: Alistair Strathern (Lab)
Country
England
Date first listed
27 May 1968
Type
Farmhouse
Address
Walnut Tree Farmhouse, Walnut Tree Road, Pirton, SG5 3PX
OS grid reference
TL 148 314
Coordinates
51.96948, -0.3296
Source
Historic England listing

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

Description

Walnut Tree Farmhouse is a farmhouse that originated with a south wing in the 16th century, while the main range was built in two phases during the late 17th century. An extension at the rear was added in the 18th century and features four gables, incorporating an existing stair tower. The south wing is timber-framed and cased in brick at the front, with the frame exposed on the side and red brick infill. The main range is constructed of red brick. The front roof slopes are covered with old red tiles, while the rear is finished with slate.

This large house is two stories high with attics and is three windows wide, featuring a north gable facing the roadside to the west. The south end has a two-story L-plan 16th-century wing that is now used for storage. This wing includes a two-bay hall range with an external chimney on the rear wall and a two-bay south cross-wing that projects only to the rear. The structure showcases jowled posts, straight tension braces, and clasped-purlin roofs.

The planning and straight joint indicate that the southern third of the main house, adjoining the south block, was initially built as a single-cell block with an internal south gable chimney and a stair tower that projects to the rear. There is also a narrow two-story hipped-roof porch that projects to the front, featuring a south gable parapet. A symmetrical block was later added to the north, complete with an internal chimney, a lobby entry, a matching porch, a rear stair tower, and a north gable parapet.

The floors are supported by chamfered and ogee stopped cross-beams. The west front is now illuminated by three triple-sash windows with segmental arches on each floor. Older flush box sash windows and blocked windows feature flat gauged arches. The front also has a chamfered plinth and a plat band. A tall central chimney has recesses that create the appearance of parallel square shafts, complemented by a large square chimney on the south gable.

The two-story lower rear extension has four gables plus one and features sash windows with three-over-six panes. Inside, the rooms are tall, and a passage has been constructed through the large internal chimney from the entrance to the rear stair. The panelled parlour at the north end includes bolection moulded panelling and two-panel doors, while the chamber above has painted marbling on similar panelling.

Local climate

Walnut Tree Farmhouse sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 88% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 81% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, fewer than 51% of listed buildings. Of these, 16 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 1997
  • 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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  2. Farmbuildings Fronting Road at Walnut Tree Farm Grade II 37 m
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  4. 7, Walnut Tree Road Grade II 225 m
  5. Docwra Manor Grade II 271 m
  6. South-East Barn at No 1 (Elm Tree Farm) Grade II 275 m
  7. Three Gables Grade II* 276 m
  8. Church of St Mary (C of E) Grade I 278 m
  9. Elm Tree Farmhouse Grade II 294 m
  10. Ivy Cottage Grade II 331 m