Thy Marghas is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 7 February 1974. House. 2 related planning applications.
Thy Marghas
- WRENN ID
- gaunt-kitchen-alder
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- St Ives MP: Andrew George (LD)
- Country
- England
- Date first listed
- 7 February 1974
- Type
- House
- Address
- Thy Marghas, South Cliff, Penzance, TR19 6QX
- OS grid reference
- SW 469 263
- Coordinates
- 50.08307, -5.53922
- Source
- Historic England listing
Description
Thy Marghas is an early 19th-century building situated on South Cliff in Mousehole. It is constructed of stuccoed and roughcast rubble, with a slate hipped roof. The building is two storeys high with a basement. The harbour front features a two-storey square bay window and a small casement window to the right, alongside a two-storey lean-to extension. The street front has two sash windows with glazing bars on the first floor, and a modern bow window on the ground floor. A side entrance is present. The building is included on the list for group value, forming part of a group with the Lobster Pot Cafe and House.
Local climate
Thy Marghas sits in a wetter-than-average part of the UK, with an average of 970 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 1 freeze-thaw cycle a year, fewer than 99% of listed buildings. 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 2001
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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