Thornhill House is a Grade II* listed building in the Dorset local planning authority area, England. First listed on 4 October 1960. Country house. 21 related planning applications.
Thornhill House
- WRENN ID
- kindled-chimney-soot
- Grade
- II*
- Local Planning Authority
- Dorset
- Constituency
- North Dorset MP: Simon Hoare (Con)
- Country
- England
- Date first listed
- 4 October 1960
- Type
- Country house
- Address
- Thornhill House, Stalbridge, DT10 2SH
- OS grid reference
- ST 740 149
- Coordinates
- 50.93372, -2.37066
- Source
- Historic England listing
Description
Thornhill House is a country house dating back to approximately 1730, with alterations made in the late 18th century and the 19th century. It was likely built for the painter Thornhill, possibly by Thornhill himself. The house is rendered with ashlar dressings and has a hipped stone slate roof. It is two storeys high with an attic.
The north facade is designed in a Palladian style and is symmetrical, arranged as a 1:3:1 composition. All windows are wooden sash windows with glazing bars. The central three bays project slightly and feature rusticated quoins and a pediment. The central doorway has a rusticated surround with a large keystone. Above the doorway is a flat entablature supported on consoles. The central bay on the first floor has a large round-headed window flanked by Doric pilasters supporting a moulded archivolt with a keystone. Swags of drapery are positioned above the upper floor windows in bays 2 and 4. Rectangular panels are situated above the upper floor windows in bays 1 and 5, and the pediment contains a bull’s eye window. The eaves overhang and are finished with a moulded cornice.
The east facade is of seven bays, with ashlar quoins and a projecting central bay from the 19th century, constructed of squared dressed stone. The arrangement is 1:2:1:2:1. Bays 1, 4, and 7 project from the facade, presenting hipped gables. At ground floor level, bays 1 and 7 have wooden sashes with glazing bars set under segmental arches with stone labels. Bays 2, 3, 5, and 6 have 19th-century ‘Tudor Perpendicular’ three-light stone mullioned windows with hollow chamfers. On the first floor, all windows except bays 4 and 5 have wooden sashes with glazing bars within moulded ashlar surrounds and square stone labels. Bay 5 contains a 20th-century casement window without glazing bars. The central bay has a mullioned and transomed ashlar stone window with horizontal glazing bars in a moulded ashlar surround with a square label. There are 19th-century hipped dormers with three-light wooden casements and glazing bars above each bay. The central double plank door is set under a four-centred ashlar arch, with moulded ashlar surrounds and a square label.
Internally, the house has been significantly altered, including the addition of a staircase and stair hall. The first-floor library contains a fireplace from around 1730 with caryatid jambs, possibly designed by Thornhill himself. Some rooms have moulded skirtings, dado rails, and cornices, alongside late 18th-century features such as a door and fireplaces.
Local climate
Thornhill House receives an average of 830 mm of rain a year. This makes it wetter than 55% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 65% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% of listed buildings. Of these, 12 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 2014
- Related listed building consents — 21 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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