Garden House and Walls and Gates of Adjoining Walled Gardens is a Grade II listed building in the North Hertfordshire local planning authority area, England. First listed on 27 May 1968. House. 2 related planning applications.

Garden House and Walls and Gates of Adjoining Walled Gardens

WRENN ID
last-obsidian-oak
Grade
II
Local Planning Authority
North Hertfordshire
Constituency
Hitchin MP: Alistair Strathern (Lab)
Country
England
Date first listed
27 May 1968
Type
House
Address
Garden House and Walls and Gates of Adjoining Walled Gardens, SG4 8BP
OS grid reference
TL 191 217
Coordinates
51.88192, -0.27036
Source
Historic England listing

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

Description

The garden house, along with its surrounding walls and gates of the adjoining walled gardens, dates primarily from the 18th century, with the house itself likely constructed around 1770, reportedly for the head gardener. It is built of red brick, with the west front and south end having a roughcast finish. The roof is steeply pitched and covered in slate.

The house is a two-story, three-window symmetrical structure in a Strawberry Hill Gothic style, facing west and overlooking large walled gardens to the rear which step up the slope to the north. The garden walls are approximately 3 metres high and buttressed, with a wrought iron double gate on the south side featuring a concave pointed overthrow.

The house features a plat-band, an arched and coved eaves cornice running around the entire building, and end chimneys. A projecting central bay on the west front has an ogee-headed window above, flanked by windows with quatrefoil heads. Painted heads and Y-tracery detail the end windows. Ground floor windows have pointed heads, and the front door features a pointed head design set within a rectangular label mould. The rear (east) side, facing the garden, is of red brick and has windows with pointed heads and two-light leaded casements. There’s a central four-light window on the first floor with an ogee head above a pointed doorway.

Local climate

Garden House and Walls and Gates of Adjoining Walled Gardens sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 82% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 76% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 17 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 — 8 transactions since 1999
  • Related listed building consents — 2 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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