South-West 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 Outbuilding.
South-West Outbuilding at Somerton Castle
- WRENN ID
- woven-pinnacle-solstice
- 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
- Outbuilding
- Period
- Medieval
- Address
- South-West Outbuilding at Somerton Castle, Castle Lane, Boothby Graffoe
- OS grid reference
- SK 953 587
- Coordinates
- 53.11751, -0.57626
- Source
- Historic England listing
Description
The south-west outbuilding at Somerton Castle is the base of a circular tower that dates back to the 14th century. It is constructed of coursed rubble and represents the lower stages of the original tower, which was situated at the corner of the castle walls. This section is now integrated with 19th-century farm buildings. The site is recognized as an Ancient Monument.
Local climate
South-West 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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