St John's Priory is a Grade II listed building in the Somerset local planning authority area, England. First listed on 18 March 1986. Detached house.

St John's Priory

WRENN ID
swift-stronghold-mist
Grade
II
Local Planning Authority
Somerset
Constituency
Glastonbury and Somerton MP: Sarah Dyke (LD)
Country
England
Date first listed
18 March 1986
Type
Detached house
Address
St John's Priory, Greenway Road, Castle Cary
OS grid reference
ST 639 325
Coordinates
51.09114, -2.51643
Source
Historic England listing

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

Description

St. John's Priory, also known as Florida House, is a detached house built in 1877 for J S Donne, a member of the Flax Mills family, and designed by Charles Bell. The building is constructed from Doulting and Bath stone ashlar and features a plain clay tile roof with coped gables and ornamental ashlar chimney stacks. It has two storeys and an attic, with a three-bay south elevation that includes a plinth and polychrome stonework. The sash windows have glazing bars and a semi-circular arch design.

The first bay features a single-storey projecting square bay window with a flat roof, open balustrade, and corner ball finials, consisting of 1+3+1 lights. Above, there are three windows grouped in a decorative false gable on a real gable, which has a segmented arched pediment at the top, adorned with a ball finial. The second bay has an open porch recess with heavy doors in a semi-circular arch supported by non-classical columns, beneath a dentilled string and carved spandrils. Above this, there is a plain single window, followed by a tower that includes a rectangular window at attic level and a belvedere with three semi-circular arched windows on each face, topped with a lead-covered bell-hip roof featuring a wrought-iron finial and weathervane. The third bay has single windows, with the lower window under a string hood and the upper window under a carved semi-circular arch, leading to a false gable with a semi-circular pediment and ball finial.

The west elevation consists of five bays that match the south elevation. The first bay features an angled bay window on both levels under a lean-to hipped roof against an ornamental coped gable, with 1+2+1 windows. The second bay has a single upper window and is blank below, while bays three and five each have segmental pedimented false gables above. The fourth bay has a projecting chimney stack extending from the first level. There are later extensions to the north and east that are not of special interest. Although the interior has not been seen, a mantlepiece and recess by Reid and Co is illustrated in The Builder from 19th May 1888. The building is now the Priory of the Sisters of Jesus Crucified.

Local climate

St John's Priory 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 65% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 14 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 2017
  • 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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