Garden Terrace Walls, Steps and Pergola Immediately South West of Heyle is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 17 June 1988. Garden terrace structure. 2 related planning applications.
Garden Terrace Walls, Steps and Pergola Immediately South West of Heyle
- WRENN ID
- stranded-corbel-violet
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Camborne and Redruth MP: Perran Moon (Lab)
- Country
- England
- Date first listed
- 17 June 1988
- Type
- Garden terrace structure
- Address
- Garden Terrace Walls, Steps and Pergola Immediately South West of Heyle, Mawnan, TR11 5LD
- OS grid reference
- SW 761 269
- Coordinates
- 50.10033, -5.13209
- Source
- Historic England listing
Description
The garden terrace walls, steps, and pergola located immediately southwest of Heyle were built around 1914-1919. Although the architect is not known, original drawings are reportedly held by the owner. The house and garden were designed for Mr. and Miss Cooper, who were siblings. The structure features shale rubble walls topped with slate, slate treads for the steps, and granite posts for the pergola.
The garden terraces are positioned to the west of the house, at the left end of the main range. The top terrace includes a large rectangular lawn, with a path below that features a pergola made of roughly hewn granite monolith posts on the outer side and slate piers on the inner side. The granite posts are set on a retaining wall that leads down to a narrow terrace, which has a grass path. At the eastern end of this path, there is a flight of steps with integrated curved seats on either side, providing access to the terrace surrounding the house. At the western end of the path, a pair of squat circular piers leads to another flight of steps that connect all the terraces. At the bottom of these steps, the flanking walls curve out into squat terminal piers topped with granite bosses. On the left side of the lower terrace, a tall boundary wall encloses a small rectangular pond or well. The terraces in front of the house are formed by earth banks without any revetments.
Local climate
Garden Terrace Walls, Steps and Pergola Immediately South West of Heyle receives an average of 870 mm of rain a year. This makes it wetter than 63% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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.
- No sale records on file
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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- 5 Terrace with Pools and Steps, Steps Up to House, Garden Retaining Walls, End Pavilions and Gazebo and Steps at West End at Number 2 (Mavins End and Mavins House)
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