St John's House is a Grade I listed building in the South Downs National Park local planning authority area, England. First listed on 6 March 1967. A Medieval House.
St John's House
- WRENN ID
- riven-baluster-fog
- Grade
- I
- Local Planning Authority
- South Downs National Park
- Constituency
- Winchester MP: Dr Danny Chambers (LD)
- Country
- England
- Date first listed
- 6 March 1967
- Type
- House
- Period
- Medieval
- Address
- St John's House, Warnford Park, Winchester
- OS grid reference
- SU 622 226
- Coordinates
- 50.99984, -1.11359
- Source
- Historic England listing
Description
St John's House is a medieval hall in ruins, dating from the 13th century. The structure features walls made of flint with stone dressings, including a plinth and four lower window openings with chamfered reveals. There is a wider cill for a hall window, a hall doorway, and a low doorway leading to a cellar. The hall is supported by four columns on octagonal bases, with one column complete and half-columns set against the walls at the end of each arcade. It is a rectangular aisled hall consisting of three bays, with a west end cellar that may have been located below a solar. The walls remain unevenly preserved to the cill height of the hall, and there is a jamb of a doorway leading to the solar. The thickening of the cellar walls indicates the possibility of vaulting.
Local climate
St John's House receives an average of 800 mm of rain a year. This makes it drier than 56% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 53% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 58% of listed buildings. Of these, 13 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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