Sewer Gas Lamp Outside 21 Hartley Square is a Grade II listed building in the Northumberland local planning authority area, England. First listed on 12 April 1994. Lamp.

Sewer Gas Lamp Outside 21 Hartley Square

WRENN ID
plain-rubble-violet
Grade
II
Local Planning Authority
Northumberland
Constituency
Cramlington and Killingworth MP: Emma Foody (Lab)
Country
England
Date first listed
12 April 1994
Type
Lamp
Address
Sewer Gas Lamp Outside 21 Hartley Square, Seaton Valley
OS grid reference
NZ 339 758
Coordinates
55.07566, -1.46926
Source
Historic England listing

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

Description

This is a sewer gas lamp located outside 21 Hartley Square, dating from the late 19th century. It was made by the Webb Lamp Company Limited of Birmingham and is constructed from cast iron. The lamp features a moulded base, a fluted shaft with a swept foot, ladder rests, and a circular head topped with a domed cover and finial. The base has plates displaying the maker's name and the inscription "J E WEBBS PATENT SEWER GAS DESTRUCTOR." This lamp was originally designed to use methane from sewers before coal gas became widely available.

Local climate

Sewer Gas Lamp Outside 21 Hartley Square receives an average of 770 mm of rain a year. This makes it drier than 63% 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 22 freeze-thaw cycles a year, fewer than 77% 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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  • 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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Nearby listed buildings

  1. The Delaval Arms Grade II 149 m
  2. Fort House Grade II* 250 m
  3. Bridge Over Seaton Burn on Track to Hartley West Farm Grade II 471 m
  4. Lamp Standard on North of Junction with Albert Road Grade II 800 m
  5. Seaton Sluice and Old Hartley War Memorial Grade II 859 m
  6. The Octagon Grade II 890 m
  7. Garden Wall to North of Number 10 Grade II 899 m
  8. The Dene Cottage Grade II 936 m
  9. Primrose Cottage Grade II 937 m
  10. Basin, Slip and Outlet Walls at Seaton Sluice Grade II 955 m