Trebyan Forge is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 15 April 1988. Forge. 1 related planning application.
Trebyan Forge
- WRENN ID
- pitched-gargoyle-storm
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- North Cornwall MP: Ben Maguire (LD)
- Country
- England
- Date first listed
- 15 April 1988
- Type
- Forge
- Address
- Trebyan Forge, Lanhydrock, PL30 5AE
- OS grid reference
- SX 080 632
- Coordinates
- 50.4373, -4.70495
- Source
- Historic England listing
Description
Trebyan Forge is a late 19th-century forge located in Lanhydrock. It is constructed from squared granite rubble with granite quoins and features a hipped slate roof with ridge tiles. The building has a stack at the left end and another at the rear, both with brick shafts.
The forge was purpose-built for the Lanhydrock estate and includes a main range with a stack for the furnace at the left end and a stack at the rear right. There is also a small store room located at the rear right and a front left wing designated for shoeing horses.
The exterior is a tall single-storey structure, with double doors raised in height on the front right and a window on the right side. The front wing has a door with an overlight on the inner side and a large multi-pane window on the left side. The rear features a large window and a single-storey attached store room with a plank door and a six-pane light. A large ventilator with a hipped roof is positioned over the main forge.
Inside, the forge remains fully operational with all original fittings intact. The stack at the left end contains a fireplace with granite sides and a brick hood, along with a stone hearth and a granite anvil block. The shoeing room has a cobbled floor, and the roof dates from the 19th century. This forge is an unusual survival, retaining its original purpose and fittings.
Local climate
Trebyan Forge sits in a wetter-than-average part of the UK, with an average of 990 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.
It experiences an average of 10 freeze-thaw cycles a year, fewer than 91% of listed buildings. Of these, 4 follow 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 — 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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