Treswallock Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 11 November 1987. Farmhouse. 2 related planning applications.

Treswallock Farmhouse

WRENN ID
tilted-step-vetch
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
11 November 1987
Type
Farmhouse
Address
Treswallock Farmhouse, St. Breward, PL30 4PL
OS grid reference
SX 104 780
Coordinates
50.5713, -4.67754
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Farmhouse. It likely originated in the 17th century and was remodelled around the mid-19th century. The farmhouse is built of local stone rubble with granite quoins. It has a rag slate roof with gable ends, with a catslide roof extending over an outshot addition. Stone rubble end stacks are visible on the east and west gable ends, with a rendered brick stack to the rear wing on the south side. The plan is an “L” shape, with the north front range featuring a two-room and cross-passage layout. According to an earlier survey by Norden around 1584, the site contained a house of considerable importance, and it’s possible the farmhouse incorporates elements of those earlier structures. The ground rises to the west of the front elevation. A rear wing of two rooms adjoins the lower left-hand room, heated by a stack. A circa 19th century outshot extends across the front (north) elevation, apparently in two builds, with a straight joint towards the west. A circa 19th century outshot extension is also located on the lower east gable end. The front elevation features plank doors near the centre and 19th and 20th century casement windows. The rear (south) elevation has an asymmetrical two-window front with late 19th or early 20th century six-pane and four-pane sashes on the ground floor and a 4-pane sash in a gabled half dormer and a four-pane sash to the right. The west elevation of the rear wing includes a two-light casement, a four-panel door, and a 20th-century window to the right, with a 1-light casement and a circa 19th century 20-pane sash window above. The interior was inaccessible during a 1986 survey, and the original layout remains uncertain.

Local climate

Treswallock Farmhouse sits in a wetter-than-average part of the UK, with an average of 1,050 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.

It experiences an average of 11 freeze-thaw cycles a year, fewer than 90% of listed buildings. Of these, 5 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 — 1 transaction since 2002
  • Related listed building consents — 2 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
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