Polglaze Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 4 November 1988. A C19 Farmhouse. 7 related planning applications.

Polglaze Farmhouse

WRENN ID
dusk-window-solstice
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
4 November 1988
Type
Farmhouse
Address
Polglaze Farmhouse, St. Mabyn, PL30 3DE
OS grid reference
SX 054 745
Coordinates
50.53865, -4.74666
Source
Historic England listing

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

Description

House. Dating from the early to mid-19th century, Polglaze Farmhouse is constructed of slate stone rubble with granite quoins, with slate hung on the front and side elevations. The roof is of rag slate, with hipped ends and brick end stacks. The building follows an ‘L’ shaped plan, originally comprising three rooms heated by end stacks, with a two-room and central-entrance plan to the front range, and a single-room kitchen wing to the rear left. A lean-to outshut, containing a dairy, is situated in the angle formed by the two ranges.

The two-storey front elevation is symmetrical, with three windows. A central six-panel door, dating from the 19th century, is glazed. There are two horned 16-pane sashes to the right and left of the entrance, along with three 16-pane sashes above. The sashes to the right and in the centre were likely replaced in the 20th century. A 19th-century two-light casement is located in the left-hand side wall. A 20th-century garage is attached to the right. The rear kitchen stack was rebuilt in the late 20th century.

Inside, the chimney-piece in the left-hand room has been replaced. Approximately mid-19th century panelling partitions off a stair from the left-hand room.

Local climate

Polglaze Farmhouse sits in a wetter-than-average part of the UK, with an average of 1,010 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 88% of listed buildings.

It experiences an average of 13 freeze-thaw cycles a year, fewer than 88% of listed buildings. Of these, 6 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 — 5 transactions since 2017
  • Related listed building consents — 7 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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