Treroose Old Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 23 November 1988. Farmhouse.

Treroose Old Farmhouse

WRENN ID
keen-flue-hawk
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
23 November 1988
Type
Farmhouse
Address
Treroose Old Farmhouse, Laneast
OS grid reference
SX 235 839
Coordinates
50.62866, -4.49653
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Farmhouse. Constructed around the late 16th to early 17th century, with alterations in the 19th and 20th centuries, and later additions to the rear, likely from the 19th and 20th centuries. The building is of rendered stone rubble with a slate roof featuring ridge tiles and gable ends. It has a gable end stack with a brick shaft on the left side, and an axial stack on the right with a granite ashlar shaft and cornice. The original plan was of three rooms and a cross passage. The lower end room is on the left, heated by the gable end stack. The hall is to the right of the passage, with an axial stack at the right end, and it may have originally been a two-room plan. There is a small, unheated upper end room to the right, and there may have been an original back-to-back fireplace related to the hall’s axial stack. A single-storey, unheated outshut extends along the entire rear, and a single-storey lean-to is at the left end, both dating to the 19th or early 20th century.

The exterior presents an asymmetrical three-window front over two storeys. The first floor has three 20th-century casement windows. The ground floor features 20th-century windows to the left and right, and to the end on the right. A window to the right of the passage entrance was rebuilt around the 18th century, with a flat granite arch and keystone. A half-glazed 20th-century door is set into a gabled 20th-century porch, leading to the passage. A single-storey lean-to with a slate roof and a plank door is located at the left end. A two-light window with a granite, chamfered surround and mullion, a hood mould, and 19th-century six-pane glazing is present at first floor on the right end. The rear features a single-storey outshut with a slate roof, casements, a 20th-century porch, and a door.

Inside, a wide passage runs along the right side, featuring a 19th-century straight staircase. The passage has 19th-century ceiling beams. A step leads up to the hall, which has an axial fireplace with granite jambs and lintel, and a 20th-century range. The front window has a splayed reveal, and a step rises to the upper end room, accessed via a plank door. The lower end room has a 20th-century fireplace. The roof space is inaccessible but is said to contain one early truss, which is roughly hewn and pegged.

Local climate

Treroose Old 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.

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