North Grove Lock House is a Grade II listed building in the Three Rivers local planning authority area, England. First listed on 3 October 1985. Lock cottage. 1 related planning application.

North Grove Lock House

WRENN ID
cold-rubblework-nettle
Grade
II
Local Planning Authority
Three Rivers
Constituency
South West Hertfordshire MP: Mr Gagan Mohindra (Con)
Country
England
Date first listed
3 October 1985
Type
Lock cottage
Address
North Grove Lock House, Watford Road, Abbots Langley, WD4 8QP
OS grid reference
TL 079 012
Coordinates
51.69945, -0.43897
Source
Historic England listing

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

Description

North Grove Lock House is a lock cottage located on the Grand Union Canal at Lock No. 71, dating from the early 19th century. The building is constructed of pale buff face brick, featuring gauged buff brick soldier course lintels above the windows. It has a hipped slated roof and is split level with two storeys, one of which faces the lock. The front has two bays and includes masonry steps leading up to a solid central door entrance. There are S-brackets supporting a cantilevered hood over the door that breaks the main roofline. The flanking windows consist of single-light timber casements and double-light casements, all set back from the wall. The eaves display exposed rafters. At the rear, there are two chimney stacks topped with three-course oversailing and finished with cream clay pots. The left return and rear also have two storeys and feature two-light casements. The interior has not been inspected, but the building was restored in the early 21st century.

Local climate

North Grove Lock House 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 86% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 85% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% 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 — 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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