Malthus' Summerhouse by Swimming Pool, at Haileybury and Imperial Service College is a Grade II listed building in the East Hertfordshire local planning authority area, England. Summerhouse.

Malthus' Summerhouse by Swimming Pool, at Haileybury and Imperial Service College

WRENN ID
swift-render-brook
Grade
II
Local Planning Authority
East Hertfordshire
Constituency
Broxbourne MP: Lewis Cocking (Con)
Country
England
Type
Summerhouse
Address
Malthus' Summerhouse by Swimming Pool, at Haileybury and Imperial Service College, London Road, Hertford Heath
OS grid reference
TL 359 107
Coordinates
51.77923, -0.03024
Source
Historic England listing

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

Description

Malthus' Summerhouse, located by the swimming pool at Haileybury and Imperial Service College, is an early 19th-century summerhouse. This small octagonal building features a timber frame, with the rear boarded and set on a stucco plinth. It has a pointed slate roof topped with a small finial. The summerhouse faces east down the pool and has three segmental arcaded sides supported by fluted pilasters with moulded caps. The entrance is raised by two steps, while the sides are flush panelled in timber, each with a small ungazed rectangular window framed by a moulded architrave. Inside, there is a conical boarded ceiling. This historic summerhouse was originally part of the grounds of Hailey House and is said to have been used by Reverend T. R. Malthus while writing his 'Essay on Population'. It was moved into the bath enclosure in 1936.

Local climate

Malthus' Summerhouse by Swimming Pool, at Haileybury and Imperial Service College sits in a drier-than-average part of the UK, with an average of 700 mm of rain a year. This makes it drier than 90% 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 34 freeze-thaw cycles a year, fewer than 52% 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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