St Winnow School is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 28 August 1987. A C17 School. 7 related planning applications.

St Winnow School

WRENN ID
winding-tin-moss
Grade
II
Local Planning Authority
Cornwall
Constituency
South East Cornwall MP: Anna Gelderd (Lab)
Country
England
Date first listed
28 August 1987
Type
School
Address
St Winnow School, Polscoe Road, Lostwithiel, PL22 0RA
OS grid reference
SX 116 598
Coordinates
50.40804, -4.65259
Source
Historic England listing

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

Description

The building is a school, dated 1850, and incorporating an earlier structure, with classroom additions dating from around 1880 and 1890. More recent alterations and additions have also been made. It is said to have been a benefaction from the Foster family of Lostwithiel. The school is built of random slatestone rubble with granite dressings and has slate roofs with gable ends and raised coped verges, including a gable end stack to the left end of the main hall. One granite door head, probably of 17th-century origin, has been re-used in the building.

The main hall is a two-storey structure of five bays, with a porch. Attached to the rear right is a classroom addition with a gable end. A short rear wing, part of a former building and heated by a brick ridge stack, is located at the left end of the main hall.

The left end of the main hall has a two-light granite casement and a gabled porch with a doorway featuring a four-centred hollow-chamfered arch. It contains C20 double doors, along with an inner four-centred arched doorway with a studded original door. To the right of the porch is a two-light and a three-light granite casement, separated by a buttress. At the right end is a wide four-centred arched granite doorway, incorporating a re-used head with a four-centred arch and leaves in the spandrels, hollow-moulded jambs, and double studded doors set beneath a hood mould. A two-light granite casement and a breather are positioned to the right of the gable end of the hall. The left gable end showcases diagonal buttresses and a large three-light mullion and transom window, hollow-chamfered, with a hood mould, above a datestone that reads “St Winnow School Rebuilt AD 1850,” with an additional blind breather above. The rear wing of the main hall to the left features a gable end and diagonal buttress; the outer side has a doorway with re-used granite jambs, with a C20 window inserted, and the rear gable end has a two-light granite casement at ground floor and two single lights with granite lintels at first floor.

Attached to the rear right side of the main hall is a classroom extension, extending to the right beyond the building’s main body. A C20 slatestone porch is set in the angle to the main hall. The front has a three-light chamfered granite casement, and the gable end has a stack and a single-storey attached privy. The rear features a three-light and a two-light chamfered granite casements.

Attached to the rear centre of the main hall, with a gable end to the rear, is a second classroom addition, with a gable end and tall chamfered granite mullion and transom windows with a breather at the apex, raised coped verges and kneelers. A C20 brick lean-to exists on the outer side.

The classrooms were formerly open to the roof, but now have suspended ceilings.

Local climate

St Winnow School 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 80% 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 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 0.2°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 — 2 transactions since 2020
  • 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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