Garden Walls, Gates and Bollards to Cannon Hall is a Grade II listed building in the Camden local planning authority area, England. First listed on 14 May 1974. Garden structure.

Garden Walls, Gates and Bollards to Cannon Hall

WRENN ID
broken-cinder-lark
Grade
II
Local Planning Authority
Camden
Constituency
Hampstead and Highgate MP: Tulip Siddiq (Lab)
Country
England
Date first listed
14 May 1974
Type
Garden structure
Address
Garden Walls, Gates and Bollards to Cannon Hall, Cannon Place, NW3 1EJ
OS grid reference
TQ 265 861
Coordinates
51.56025, -0.17523
Source
Historic England listing

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

Description

The garden walls, gates, and bollards at Cannon Hall date back to the 18th century, with some parts rebuilt in 1990 due to storm damage. The walls are made of brown brick and feature shallow buttresses and brick coping. The main entrance on the north side was rebuilt in the late 20th century, consisting of brown brick piers with red brick dressings and a stone cornice, topped with 20th-century stone figures that replaced earlier urns. It includes 20th-century wrought-iron gates and an early 19th-century overthrow with a lamp-holder and a reproduction lamp. The main entrance is flanked by brick walls with moulded brick coping and carriage entrance gates.

Outside the gates on the pavement, there are two cast-iron cannons from the late 18th century that serve as bollards. The east (garden) entrance features a segmental-arched gateway with a wooden door, flanked by brick piers set into the wall and topped with stone balls. To the right of this entrance, there is a small cast-iron cannon used as a bollard.

Local climate

Garden Walls, Gates and Bollards to Cannon Hall sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 98% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 66% of listed buildings. Of these, 13 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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  • 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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