Lock House No 68 on Grand Union Canal is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 2 December 1986. Canal lock keeper's house. 2 related planning applications.

Lock House No 68 on Grand Union Canal

WRENN ID
heavy-entrance-rye
Grade
II
Local Planning Authority
Dacorum
Constituency
South West Hertfordshire MP: Mr Gagan Mohindra (Con)
Country
England
Date first listed
2 December 1986
Type
Canal lock keeper's house
Address
Lock House No 68 on Grand Union Canal, Red Lion Lane, Kings Langley
OS grid reference
TL 068 045
Coordinates
51.72973, -0.45404
Source
Historic England listing

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

Description

Lock House No. 68 is a canal lock keeper's house dating from the early 19th century, built for the Grand Junction Canal Company, which became the Grand Union Canal through amalgamation in 1929. The house is constructed of colourwashed brick and features a hipped slate roof. It is two storeys tall and two windows wide, facing east. The upper windows are small, with recessed sashes that have three-over-three panes and segmental arches. To the left of the door is a taller window of a similar style. On the right, there is a canted bay window with sash windows that have two-over-two panes. The half-glazed panelled door has been renewed. The house is positioned next to the lock, with a half storey below the level of the lock walkway due to the embankment, and it has a rear extension on the flat.

Local climate

Lock House No 68 on Grand Union Canal sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 54% of listed buildings. Of these, 15 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
  • No sale records on file
  • 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
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