Portreath Harbour Including Slipway to South South West is a Grade II listed building in the Cornwall local planning authority area, England. Harbour. 2 related planning applications.
Portreath Harbour Including Slipway to South South West
- WRENN ID
- ragged-iron-thistle
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Camborne and Redruth MP: Perran Moon (Lab)
- Country
- England
- Type
- Harbour
- OS grid reference
- SW 654 455
- Coordinates
- 50.2628, -5.29218
- Source
- Historic England listing
Description
Portreath Harbour, built between 1760 and the 1860s, is constructed from killas and slate rubble, with dressed granite blocks. It comprises an outer harbour and two basins aligned on a north-west/south-east axis. The harbour's curved sides are formed by excavated natural rock. A short bullnose on the north side has a flight of steps secured by iron staples on its outer face. The south side features a long, curved pier, primarily of large dressed granite blocks, with lower sections showing earlier vertically-set rubble masonry. A gated slipway on the south-south-west side likely dates to the 1860s.
At the inner end, a short passage with slotted sides leads to the "new basin," begun in 1800 and designed to accommodate up to 25 vessels. This basin is rectangular, approximately 280 feet long and 95 feet wide, with side walls of large killas and slate rubble, interspersed with dressed granite blocks, and a recessed flight of steps at the north-west corner. Another passage opens into the "inner basin," constructed in 1846 and measuring approximately 200 feet long and 100 feet wide. This basin has side walls of large dressed granite blocks, a flight of steps at the north-west corner, and a slipway at the centre of the inner end.
The harbour's development was driven by the Basset family, facilitating the import of coal and the export of copper and tin ores, and was linked to inland mining areas by a tramroad connected to the Portreath Incline.
Local climate
Portreath Harbour Including Slipway to South South West receives an average of 880 mm of rain a year. This makes it wetter than 65% 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 5 freeze-thaw cycles a year, fewer than 97% of listed buildings. Of these, 2 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 — 4 transactions since 2015
- 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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- 3 Harbour Walls Comprising Walls to South of North Quay, to East of the Strand and to North of South Quay, Slips and Pier on North East of South Quay
- 4 Harbour Walls, Pier, Quay and Slips
- 5 Charlestown Harbour, comprising the inner dock and quays; outer basin and piers; eastern breakwater; and the eastern wall
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