King Johns Palace is a Grade II* listed building in the Slough local planning authority area, England. First listed on 11 August 1952. Palace. 4 related planning applications.
King Johns Palace
- WRENN ID
- errant-stronghold-pearl
- Grade
- II*
- Local Planning Authority
- Slough
- Constituency
- Windsor MP: Jack Rankin (Con)
- Country
- England
- Date first listed
- 11 August 1952
- Type
- Palace
- Address
- King Johns Palace, 1-6, Park Street, Colnbrook with Poyle, SL3 0JF
- OS grid reference
- TQ 028 769
- Coordinates
- 51.48239, -0.5207
- Source
- Historic England listing
Description
King John’s Palace is a circa 1600 range of buildings with later alterations and a modern section, situated on a courtyard plan. A parallel barn faces the road. The building features a central elliptical archway extending to the eaves. It is two storeys and attics high, with a timber-framed appearance on a stone plinth. The front elevation has four two-storey bays, featuring many-paned modern wooden casement windows. A moulded wooden bressumer is jettied to the right of the archway. The front is plastered, displaying remnants of wide rustication. The archway is moulded with a key block, beneath a rough wooden entablature supporting a tiled roof. Three gabled dormers and three chimneys (the right-hand one having a T-plan) are visible. Two doors are located to the left of the archway, while numbers 2 enters under the arch and number 1 is accessed from a modern extension to the rear. To the left is a tall red-brick wall containing an elliptical central arch with a stone archivolt and a wrought-iron gate with a crested capping. Within the courtyard to the south-east is a timber-framed wing with three gables, along with a lower one-and-a-half storey wing featuring one dormer and five windows, most of which are modern diamond lattice casements. There are three doorways, including those for numbers 5 and 6.
Local climate
King Johns Palace sits in a drier-than-average part of the UK, with an average of 700 mm of rain a year. This makes it drier than 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.
It experiences an average of 29 freeze-thaw cycles a year, fewer than 68% 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 — 17 transactions since 1998
- Related listed building consents — 4 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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