Orchard Outbuilding at Somerton Castle is a Grade I listed building in the North Kesteven local planning authority area, England. First listed on 23 August 1967. A Medieval Ancient monument.
Orchard Outbuilding at Somerton Castle
- WRENN ID
- watchful-vestry-juniper
- Grade
- I
- Local Planning Authority
- North Kesteven
- Constituency
- Sleaford and North Hykeham MP: Dr Caroline Johnson (Con)
- Country
- England
- Date first listed
- 23 August 1967
- Type
- Ancient monument
- Period
- Medieval
- Address
- Orchard Outbuilding at Somerton Castle, Castle Lane, Boothby Graffoe
- OS grid reference
- SK 954 588
- Coordinates
- 53.11812, -0.57512
- Source
- Historic England listing
Description
The Orchard Outbuilding at Somerton Castle is a Grade I listed structure dating from the 14th century. It is the base of a circular tower that was originally located at a corner of the castle walls. The building is constructed of coursed rubble and features a circular design with a central column and stone vaulting. Surrounding the central column are 12 arches, with corbels positioned between the ribs that support the vault. Additionally, there is a small projecting chamber to the south-west, which has a pointed barrel vault. This structure is recognized as an Ancient Monument.
Local climate
Orchard Outbuilding at Somerton Castle sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 81% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 88% of listed buildings.
It experiences an average of 35 freeze-thaw cycles a year, more than 59% of listed buildings. Of these, 17 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
- No sale records on file
- No related consent applications matched
- 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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