Carthew Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 8 November 1999. Farmhouse. 5 related planning applications.

Carthew Farmhouse

WRENN ID
carved-keep-tallow
Grade
II
Local Planning Authority
Cornwall
Constituency
St Austell and Newquay MP: Noah Law (Lab)
Country
England
Date first listed
8 November 1999
Type
Farmhouse
Address
Carthew Farmhouse, Treverbyn
OS grid reference
SX 003 559
Coordinates
50.36904, -4.80926
Source
Historic England listing

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

Description

Carthew Farmhouse is a farmhouse built around the 1840s. It is constructed of granite rubble with granite dressings and features a bitumen-grouted rag slate roof that has projecting eaves supported by shaped brackets. The building has deep dressed granite end stacks and a double-depth plan with two rooms facing the garden front. There is a central rear entrance leading into a stair hall, along with another entrance located to the center left.

The farmhouse is two storeys high, plus an attic that is lit from the gables. The front of the house is symmetrical with three windows. All openings are topped with flat arches and have 20th-century horned sash windows that include glazing bars. The symmetrical rear also has three windows, with a central round-arched stair window featuring a fanlight head. The end walls contain central windows, and the left-hand return wall has a central doorway. The interior has not been inspected.

Local climate

Carthew Farmhouse receives an average of 960 mm of rain a year. This makes it wetter than 74% 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 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 0.3°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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  • No EPC on record for this property
  • Sale history — 1 transaction since 2024
  • Related listed building consents — 5 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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Nearby listed buildings

  1. Wash House Parallel to Rear of Carthew Farmhouse Grade II 9 m
  2. Saw House in Top Yard North of Carthew Farmhouse Grade II 49 m
  3. Carthew Mill, Mill Cottage and Number 2 Grade II 262 m
  4. Carthew Cottage Grade II 408 m
  5. Wash House to South of Carthew Cottage Grade II 412 m
  6. Milestone in Front of the Wheal Martyn China Clay Museum (Museum Not Included) Grade II 574 m
  7. Carbean Farmhouse Grade II 676 m
  8. Milestone at Sx 200 566 Grade II 1.1 km
  9. Crow South East of Higher Biscovillack Farmhouse (Farmhouse Not Included) Grade II 1.5 km
  10. Church of St Peter Grade II 1.8 km