Treglum Mill Cottage is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 11 January 1989. Mill house. 1 related planning application.

Treglum Mill Cottage

WRENN ID
inner-mantel-sable
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
11 January 1989
Type
Mill house
Address
Treglum Mill Cottage, Tresmeer
OS grid reference
SX 231 869
Coordinates
50.65566, -4.50381
Source
Historic England listing

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

Description

Treglum Mill Cottage is a former mill house, now a private residence, dating from around the mid-18th century. It is constructed of stone rubble and features a rag slate roof with gable ends and stone rubble end stacks. The building has a two-room layout with a cross passage, heated by end stacks, with the larger room likely serving as the hall-kitchen on the right side. A rear outshut was added in the 19th century. The exterior is two storeys high and has a slightly asymmetrical three-window front. There is a 19th-century part-glazed door located to the left of the centre, flanked by two 2-light casements on the ground floor, with two similar casements and a central blocked window above on the upper floor. The interior has not been inspected.

Local climate

Treglum Mill Cottage sits in a wetter-than-average part of the UK, with an average of 1,040 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 87% 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.
  • 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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