Flag House is a Grade II listed building in the Buckinghamshire local planning authority area, England. House. 2 related planning applications.
Flag House
- WRENN ID
- final-doorway-lake
- Grade
- II
- Local Planning Authority
- Buckinghamshire
- Constituency
- Chesham and Amersham MP: Sarah Green (LD)
- Country
- England
- Type
- House
- Address
- Flag House, High Street, Chalfont St. Giles, HP8 4QF
- OS grid reference
- SU 991 935
- Coordinates
- 51.63237, -0.56919
- Source
- Historic England listing
Description
Flag House is a 17th-century building, significantly altered in the late 18th and early 19th centuries. It is located on the south-east side of the High Street in Chalfont St Giles and has an L-shaped plan. The building is primarily red brick, originally covering a timber frame, although the timber frame is visible in the gable end facing the street. The roof is tiled, with brick bands delineating the storeys. A small attic window is set into the framing, and there are 2-light, camber-arched casement windows on the ground floor, dating to the 19th century. The west side has 2-light casements on both floors. A plain door provides access to the front. A single-storey wing, added in the early 19th century at a right angle to the west side, contains a 3-light wood casement and a plain door under a common lintel. A weather-boarded lean-to, with an old tile roof and set on a brick base, extends from the east side. An external brick chimney stack is located at the rear. Internally, exposed studding is visible on the former west external wall. Upstairs, there is a chamfered wall plate. The attic rafters are largely encased, but two purlins and a collar are exposed. Parts of a partition wall are also visible.
Local climate
Flag House sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 88% 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 31 freeze-thaw cycles a year, fewer than 61% 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 4 transactions since 1995
- Related listed building consents — 2 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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