Oldhay Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 23 November 1988. Farmhouse. 3 related planning applications.
Oldhay Farmhouse
- WRENN ID
- endless-slate-tarn
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- North Cornwall MP: Ben Maguire (LD)
- Country
- England
- Date first listed
- 23 November 1988
- Type
- Farmhouse
- Address
- Oldhay Farmhouse, Altarnun, PL15 7RN
- OS grid reference
- SX 237 821
- Coordinates
- 50.61258, -4.49246
- Source
- Historic England listing
Description
Oldhay Farmhouse is probably of 17th-century origin, although it has been altered in the 19th and 20th centuries. It is a stone farmhouse with large granite quoins and a slate roof with gable ends. The house has stone end stacks and projecting stone lateral stacks with set-offs and a cloam oven projection. The original layout is uncertain due to subsequent alterations; the rear wing has been shortened by approximately 2 metres. The overall plan is 'L' shaped, with the front range containing two rooms and a central entrance, and the wing to the left containing a further two rooms, both heated by side lateral stacks. A 19th-century outshut is located to the rear of the right-hand side, partly remodelled in the 20th century. The ground slopes down to the right, and there is a cellar beneath the right-hand room. The front elevation has three windows, appearing almost symmetrical, with dressed stone arches to the ground-floor openings. A 20th-century plank door is located near the centre, flanked by two 20th-century 2-light casements, with three similar casements above. The left-hand room and rear wing have 20th-century floor joists. The left-hand fireplace has a chamfered granite surround, and on the right is a second fireplace opening containing a flat horizontal slate slab pierced with two round holes, approximately 6 inches in diameter, and a small grate below. The fireplace in the room directly behind has chamfered granite jambs, and the fireplace in the rear room of the left-hand wing is partly blocked. The first floor was not inspected.
Local climate
Oldhay 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 4 transactions since 2009
- Related listed building consents — 3 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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