Old Manor and Colwills is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 12 October 1984. House.

Old Manor and Colwills

WRENN ID
secret-rood-yew
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
12 October 1984
Type
House
Address
Old Manor and Colwills, St. Gennys
OS grid reference
SX 148 971
Coordinates
50.74419, -4.62583
Source
Historic England listing

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

Description

Old Manor and Colwills is a pair of houses that were formerly one house, dating from the 17th century and remodelled with restoration work completed in 1983. The building is constructed of rendered slatestone rubble and features a slate roof. The south-facing range is one room deep and has stacks at the gable ends, likely serving as the hall and kitchen, with a projecting wing at the rear, now known as Colwill's, which has a massive gable end stack, forming a T-plan.

The main range is two storeys high and has three windows, with an off-centre enclosed porch that has a gabled slate roof. The ground floor windows are 20th-century sashes with glazing bars and drip ledges. The first floor windows are similar, with the left and centre windows set under raking roofs that project slightly above the eaves line. The projecting rear wing is partly rendered, featuring renewed casement windows and one sash window, all with glazing bars. There is a horizontal sliding sash window on the left side of the first floor of the rear wing, and a small rectangular opening on the east side of the rear wing, which may have originally been a stair light.

Inside, the ground floor of the main range has chamfered ceiling beams, and there is a fireplace at the east gable end that has been reset with a granite lintel and hollow-chamfered jamb. The first floor room on the right also has a fireplace, and the roof features coupled rafters that are halved and face-pegged.

Local climate

Old Manor and Colwills 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 13 freeze-thaw cycles a year, fewer than 88% 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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  7. Cleave Grade II 891 m
  8. Lower Tresmorn Grade II 1.3 km
  9. Tremayna Methodist Chapel Grade II 1.3 km
  10. Tremayna Farmhouse Grade II 1.3 km