The Old Mill is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 20 May 1988. Millhouse and hotel. 2 related planning applications.

The Old Mill

WRENN ID
woven-spandrel-sage
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
20 May 1988
Type
Millhouse and hotel
Address
The Old Mill, St. Issey, PL27 7QT
OS grid reference
SW 918 721
Coordinates
50.51186, -4.93694
Source
Historic England listing

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

Description

The Old Mill is a millhouse and mill that has been converted into a hotel. It likely has origins from the 18th century and was extended in the early 19th century, with the mill itself probably dating from that time. The building is constructed of stone rubble and features a slate roof with gable ends and brick end stacks.

The layout of the millhouse is not entirely clear, but it includes a front range with two rooms and a central entrance, heated by end stacks, and a smaller rear wing with a similar two-room and central entrance plan, also heated by end stacks. The mill, located directly behind the house, has an overall rectangular shape and runs parallel to the front range.

In terms of exterior details, the building is two storeys high, while the mill at the rear rises to three storeys. The front range displays a symmetrical facade with two windows, featuring brick segmental arches above the openings. The ground and first floors have four-pane sash windows, and there is a central doorcase from the 19th century. The rear wing has a regular three-window front with a central entrance, which is flanked by a 20th-century stone rubble porch with a slate hipped roof. To the left of the porch is a sash window, and to the right is a large four-pane sash. On the first floor, there are two 19th-century twelve-pane sashes beside a central blind opening. The three-storey mill at the rear also has 19th-century twelve-pane sashes. The interior has not been inspected.

Local climate

The Old Mill sits in a wetter-than-average part of the UK, with an average of 990 mm of rain a year. This makes it wetter than 79% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 94% of listed buildings. Of these, 3 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 2003
  • 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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