Hempnall House is a Grade II listed building in the South Norfolk local planning authority area, England. First listed on 24 July 1992. House. 5 related planning applications.

Hempnall House

WRENN ID
iron-pewter-acorn
Grade
II
Local Planning Authority
South Norfolk
Constituency
South Norfolk MP: Ben Goldsborough (Lab)
Country
England
Date first listed
24 July 1992
Type
House
Address
Hempnall House, NR15 2NU
OS grid reference
TM 242 925
Coordinates
52.48445, 1.30147
Source
Historic England listing

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

Description

Hempnall House is a house dating to the late 16th century, with a 17th-century extension and a front pile added in 1871, along with later additions. The original rear section has a timber frame faced with colour-washed brick, and a fishscale slate roof, with concrete tiles to the rear pitch. It is rectangular in plan, with an off-centre axial stack. The east gable-end is of 19th-century brick with a crowstepped parapet. It has two storeys and an attic to the east of the stack, with scattered casement windows, including one surviving ovolo-moulded mullion window. The east gable-end features two sash windows beneath skewback arches. Two modern outshuts are located to the north. Inside, there are two queen-post trusses to the west of the stack, and two bays east of the stack with upper crucks. The 1871 front pile is of gault brick with a slate roof, with a symmetrical three-bay plan and a projecting enclosed central porch. It has a pair of stacks to the rear wall, two storeys, and tripartite sashes with vertical glazing bars and horns underneath skewback arches to the side bays. A panelled front door includes a rectangular fanlight, set within a plain doorcase with a hood on brackets displaying a date. Above the door is a single sash window with vertical glazing bars and horns. The porch has a crowstepped gable with obelisk kneelers and a studded globe to the apex, along with crowstepped gable-ends. It also features a guilloche-moulded median stringcourse and a moulded dentil cornice. Later extensions are located to the west.

Local climate

Hempnall 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 95% of listed buildings.

It experiences an average of 28 freeze-thaw cycles a year, fewer than 70% of listed buildings. Of these, 15 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.
  • Sale history — 2 transactions since 1999
  • Related listed building consents — 5 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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