Coal Duty Obelisk in Front Yard of Number 137 is a Grade II listed building in the Broxbourne local planning authority area, England. First listed on 8 November 1983. Monument.
Coal Duty Obelisk in Front Yard of Number 137
- WRENN ID
- idle-basalt-fen
- Grade
- II
- Local Planning Authority
- Broxbourne
- Constituency
- Broxbourne MP: Lewis Cocking (Con)
- Country
- England
- Date first listed
- 8 November 1983
- Type
- Monument
- Address
- Coal Duty Obelisk in Front Yard of Number 137, High Road
- OS grid reference
- TL 364 052
- Coordinates
- 51.72914, -0.02518
- Source
- Historic England listing
Description
The Coal Duty Obelisk located in the front yard of number 137 on High Road in Wormley was erected in 1861 to mark the boundary of the London coal duty. It is one of seven such obelisks in the district. The obelisk is made of painted cast iron and stands approximately one and a half metres high. It features a square post with a flat pyramid top, chamfered corners, and roll-moulded necking. On its surface, there is a raised shield displaying a painted cross, which represents the arms of the City of London.
Local climate
Coal Duty Obelisk in Front Yard of Number 137 sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 97% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 63% 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.
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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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