Duncan Cottage is a Grade II listed building in the Bath and North East Somerset local planning authority area, England. First listed on 5 August 1975. House. 6 related planning applications.

Duncan Cottage

WRENN ID
gentle-vestry-moth
Grade
II
Local Planning Authority
Bath and North East Somerset
Constituency
Bath MP: Wera Hobhouse (LD)
Country
England
Date first listed
5 August 1975
Type
House
Address
Duncan Cottage, 24, Sion Hill, BA1 2UL
OS grid reference
ST 739 659
Coordinates
51.39228, -2.37576
Source
Historic England listing

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

Description

Duncan Cottage is a detached house built around 1800, with a later 19th-century rear left wing. It is constructed from limestone ashlar and features a slate roof with moulded stacks at the returns. The exterior is two storeys high and has a symmetrical three-window front. A prostyle Tuscan porch is adorned with lead ornaments and thin iron railings, leading to a balustraded balcony above. The entrance has a six-panel door that is half-glazed, with late 19th-century cut-glass upper panels inside. The building has a coped parapet, a slightly-returned cornice, and a first-floor sill band. The horned late 19th-century plate glass sash windows have painted reveals. A French window in the centre of the first floor opens onto the roof of the porch. Additionally, there is a French window on the first floor of the left return that opens onto the roof of the single-storey left wing, which features a coped parapet and cornice below late 19th-century cast iron railings. The left return of this later wing, along with the rear, borders the east side of Sion Hill. The interior has not been inspected.

Local climate

Duncan Cottage receives an average of 860 mm of rain a year. This makes it wetter than 60% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 64% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 15 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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  • No EPC on record for this property
  • Sale history — 1 transaction since 2003
  • Related listed building consents — 6 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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  10. 38, Sion Hill Grade II 111 m