The Round House is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 26 January 1987. Gazebo. 1 related planning application.
The Round House
- WRENN ID
- little-balcony-bone
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- South East Cornwall MP: Anna Gelderd (Lab)
- Country
- England
- Date first listed
- 26 January 1987
- Type
- Gazebo
- Address
- The Round House, Lower Anderton Road, Millbrook, PL10 1DP
- OS grid reference
- SX 430 521
- Coordinates
- 50.34852, -4.20744
- Source
- Historic England listing
Description
The Round House is a circa 1830 gazebo, originally part of Tregenna, which has been converted into a house. A 20th-century addition extends to the rear. The building is constructed of slatestone rubble with brick dressings, and has a hipped slate roof with a brick stack and cap on the rear slope.
The plan is octagonal, originally comprising a single room, with a winder stair to one side and an integral single-storey service wing. A single-storey addition of the 20th century is located to the rear left.
The two-storey front elevation features pointed arched two-light casements with four panes in the upper and lower sections and brick surrounds. A blocked former door opening is on the left side. A brick band course runs around the building. The first floor has curved triangular single-light windows on each side. The integral service wing to the right has a pointed arched casement to the front and two 20th-century three-light casements to the right side. It has a gable end to the rear and a slate ridge coping with trefoils. A single-storey 20th-century addition is present to the rear left, with an entrance on the right.
The octagonal front room contains a winder stair with turned balusters and a four-panelled door with a triangular head. The first-floor room is open to the roof, displaying principal rafters, a row of lapped tie beams and purlins.
The Round House occupies a prominent position on the edge of a creek.
Local climate
The Round House 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 89% of listed buildings.
It experiences an average of 9 freeze-thaw cycles a year, fewer than 91% 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 0.3°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 — 1 transaction since 2013
- Related listed building consents — 1 application
- 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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