Tregonan is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 15 November 1988. A Victorian House. 2 related planning applications.

Tregonan

WRENN ID
lost-attic-mallow
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
15 November 1988
Type
House
Period
Victorian
Address
Tregonan, St. Goran, PL26 6LR
OS grid reference
SW 988 431
Coordinates
50.25364, -4.8235
Source
Historic England listing

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

Description

House. Built in the early to mid-19th century, with later 19th and 20th-century additions and alterations. The house is constructed of slatestone rubble with brick dressings, and has a slurried slate roof with ridge tiles and gable ends. It features gable end stacks with brick shafts. Some parts of the house are rendered and slate-hung. The layout consists of a two-room plan, with a central entrance leading to a passage and a stair hall at the rear. Each room is heated by a gable end stack. A small two-storey addition, possibly a carpenter’s workshop, is situated at the right end, with an external stone stair leading to a loft. An early 20th-century addition is located to the rear left.

The front of the house is symmetrical with three windows. It has a central 20th-century glazed door, and original 19th-century 16-pane sashes with timber lintels above. The two-storey addition to the right has a hipped roof, rendered at ground floor and slate-hung above. The left end of the house is rendered and includes a 20th-century conservatory, window, and door. The right end of the addition has two 20th-century 12-pane windows on the ground floor, slate-hung above, with two small 20th-century 2-light 6-pane casement windows. The rear of the addition has an external stone stair leading to a 20th-century loft door; the upper level is slate hung. The rear of the main house has a 20th-century 3-light 6-pane casement with a timber lintel on the ground floor to the left, and a 16-pane sash and a 19th-century plate-glass and 8-pane sash window, lighting the stair, at first floor. The interior was not inspected.

Local climate

Tregonan receives an average of 910 mm of rain a year. This makes it wetter than 68% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% 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 0.2°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 — 6 transactions since 1999
  • 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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