Little Trethinna is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 15 May 1985. House. 4 related planning applications.
Little Trethinna
- WRENN ID
- long-quoin-claret
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- North Cornwall MP: Ben Maguire (LD)
- Country
- England
- Date first listed
- 15 May 1985
- Type
- House
- Address
- Little Trethinna, Altarnun, PL15 7SY
- OS grid reference
- SX 248 826
- Coordinates
- 50.61715, -4.47698
- Source
- Historic England listing
Description
Little Trethinna is a house dating to the late 16th or early 17th century. It is constructed of stone rubble with a slate roof and gable ends. A stone rubble end stack is located on the left-hand side, while the right-hand side has a brick shaft for its end stack. The house is built on a sloping site, with the ground rising to the left. The original plan is uncertain, and the interior was not accessible for inspection in 1987. The house appears to be divided into two sections; the left-hand side has an entrance on the right and a room to the left heated by an end stack, while the right-hand side has an entrance to the left and the adjacent room is heated by another end stack. A small room lies between the two entrances, and it is unclear which was the original entrance. Attached to the lower right-hand end is a further range, a one-room plan with an entrance, likely a later 19th-century addition. The front facade is asymmetrical, a four-window arrangement with entrances positioned to the left and right of centre, featuring plank doors and dressed stone arches. A small one-light casement window is also present. To the left is a two-light casement, and to the right a 19th-century two-light casement within an opening originally holding a granite two-light mullion window; the surround of the mullioned window remains. Above the window lintel is inscribed "RICHARD HAVCRE." Four two-light casement windows are on the first floor. The interior remains inaccessible but is likely to contain several interesting features.
Local climate
Little Trethinna 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 3 transactions since 2003
- Related listed building consents — 4 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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- Lower Trethinna Cottage
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- Garden Walls, Gate-Piers, Gate and Summer House to South of Trethinna Farmhouse
- Trerithick and Garden Walls to Front
- Bridge Directly South of Trewen Mill
- Trewen Mill
- Trerithick Bridge
- Innyside Farmhouse
- Church of St Michael