High Canons is a Grade II listed building in the Hertsmere local planning authority area, England. First listed on 12 August 1985. Country house. 1 related planning application.

High Canons

WRENN ID
burning-spindle-stoat
Grade
II
Local Planning Authority
Hertsmere
Constituency
Hertsmere MP: Sir Oliver Dowden (Con)
Country
England
Date first listed
12 August 1985
Type
Country house
Address
High Canons, Shenley
OS grid reference
TQ 208 990
Coordinates
51.67743, -0.25389
Source
Historic England listing

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

Description

High Canons is a country house built around 1800, with extensions added in 1806 and later alterations made in the 20th century. The house is constructed of brick, which is stuccoed and whitewashed, and features slate hipped roofs. The overall shape is nearly rectangular with a half H layout, where the arms have been extended later.

The building has two storeys and a five-bay front. It includes a large ground floor tetrastyle prostyle Tuscan porch with round-headed windows and pilasters on the returns. The entrance has an architrave and is flanked by pilaster strips on the first floor. The windows are architraved glazing bar sashes, with those on the ground floor being taller. There is a plinth, a continuous mutule cornice, and a coped parapet, with a small step back from the central three bays. The house has two cross axial stacks.

On the right return, there are five bays with glazing bar sashes featuring gauged brick flat arched heads. Relieving arches create a blind arcade with an impost band on the ground floor, and there is a cross axial stack to the left of centre. The left return, or garden front, has four bays. The ground floor features a projecting Tuscan loggia, which is octastyle in antis, with French windows. The first floor has glazing bar sashes, and there is a triple stack with a single base and cornice at the centre front.

At the rear, there are two slightly later and lower extensions, each with three bays. To the left, there is a repositioned verandah with a coved roof supported by cast-iron colonnettes, which contains two recesses with pilastered jambs. The ground floor has a central French window with glazing bar sashes. The triple stacks are similar to those on the main block. There is also a further conservatory extension and stables attached to the right extension, featuring a segmental arch over the carriage entrance. The interior has been remodelling in the 20th century.

Local climate

High Canons 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 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 87% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% 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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  • No EPC on record for this property
  • No sale records on file
  • Related listed building consents — 1 application
  • 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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