Garden Walls, Gate-Piers, Gate and Summer House to South of Trethinna Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 23 November 1988. Garden feature.
Garden Walls, Gate-Piers, Gate and Summer House to South of Trethinna Farmhouse
- WRENN ID
- lunar-turret-honey
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- North Cornwall MP: Ben Maguire (LD)
- Country
- England
- Date first listed
- 23 November 1988
- Type
- Garden feature
- Address
- Garden Walls, Gate-Piers, Gate and Summer House to South of Trethinna Farmhouse, Altarnun
- OS grid reference
- SX 248 825
- Coordinates
- 50.6164, -4.47719
- Source
- Historic England listing
Description
The garden walls, gate-piers, gate, and summer house located to the south of Trethinna Farmhouse are likely from the 18th century and mid-19th century. The low stone rubble walls, topped with flat slate coping, enclose the garden in front of the farmhouse. There is a pair of granite ashlar gate-piers from around the 18th century, which are square in shape and topped with pyramid caps, flanking a pair of similar gate-piers that are probably from the mid-19th century. In the corner formed by the walls on the front and left side of the garden, there is a small summer house from the mid-19th century. This summer house is open-fronted and features a slate corbelled roof made from large slabs of slate, with a rendered top. It has two timber posts at the front with ogee stops at the top and bottom, and trellis panels on either side of the central entrance.
Local climate
Garden Walls, Gate-Piers, Gate and Summer House to South of Trethinna Farmhouse sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.
It experiences an average of 16 freeze-thaw cycles a year, fewer than 84% of listed buildings. Of these, 7 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
- No related consent applications matched
- 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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