Clayton Tunnel North Portal Tunnel Cottage is a Grade II listed building in the South Downs National Park local planning authority area, England. First listed on 11 May 1983. A Victorian Tunnel cottage. 1 related planning application.

Clayton Tunnel North Portal Tunnel Cottage

WRENN ID
twisted-chamber-rowan
Grade
II
Local Planning Authority
South Downs National Park
Constituency
Mid Sussex MP: Alison Bennett (LD)
Country
England
Date first listed
11 May 1983
Type
Tunnel cottage
Address
Clayton Tunnel North Portal Tunnel Cottage, Clayton Hill, Pyecombe, Mid Sussex, BN6 9PQ
OS grid reference
TQ 298 140
Coordinates
50.91148, -0.15448
Source
Historic England listing

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

Description

The Clayton Tunnel North Portal Tunnel Cottage is part of the original layout of the London-Brighton Railway and dates from 1841. It is situated over the north end of Clayton Tunnel. The pointed arch of the tunnel is flanked by octagonal turrets that feature imitation machicolation, a castellated parapet, and loop lights. Above the arch, the cottage has one storey and two windows set back behind a parapet. Originally constructed of white brick, it has a hipped slate roof. On each side of the turrets, there are flanking walls that end in lower octagonal turrets. Sir John Rennie was the chief engineer for the London-Brighton railway line.

Local climate

Clayton Tunnel North Portal Tunnel Cottage receives an average of 830 mm of rain a year. This makes it wetter than 54% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 88% of listed buildings.

It experiences an average of 14 freeze-thaw cycles a year, fewer than 86% of listed buildings. Of these, 7 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.
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  • Related listed building consents — 1 application
  • 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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