Old Thatch is a Grade II listed building in the East Hertfordshire local planning authority area, England. First listed on 22 February 1967. House. 3 related planning applications.
Old Thatch
- WRENN ID
- sharp-frieze-vermeil
- Grade
- II
- Local Planning Authority
- East Hertfordshire
- Constituency
- North East Hertfordshire MP: Chris Hinchliff (Lab)
- Country
- England
- Date first listed
- 22 February 1967
- Type
- House
- Address
- Old Thatch, High Street, Westmill, SG9 9LW
- OS grid reference
- TL 368 270
- Coordinates
- 51.92523, -0.01132
- Source
- Historic England listing
Description
Old Thatch is a house located in Westmill village, dating from the 17th century or earlier, with a west crosswing added in the 19th or 20th century. The building features a timber frame resting on a stucco sill, with the eastern end exposed, while the rear is weatherboarded and the front is roughcast. It has a half-timbered crosswing and a lean-to porch on the west side. The steep thatched roofs include a half-hipped roof on the west wing. The house is likely a two-unit end-chimney design with one and a half storeys, having been enlarged beyond the chimney. It faces north and includes a large double-window eyebrow dormer and two small-paned windows below. The west wing has a three-light casement window on each floor, and the roof slopes down over the doorway, which features a battened door. There are windows at two levels in the rear wall of the older part of the house, and a canted bay window with a thatched roof is located on the west end.
Local climate
Old Thatch 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 89% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 80% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 61% 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
- Sale history — 3 transactions since 2007
- Related listed building consents — 3 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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