Home Park Lock is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 3 October 1985. Lock. 2 related planning applications.

Home Park Lock

WRENN ID
twelfth-glass-spring
Grade
II
Local Planning Authority
Dacorum
Constituency
South West Hertfordshire MP: Mr Gagan Mohindra (Con)
Country
England
Date first listed
3 October 1985
Type
Lock
Address
Home Park Lock, 70, Grand Union Canal, Abbots Langley, Three Rivers, WD4 8DZ
OS grid reference
TL 077 020
Coordinates
51.70705, -0.44192
Source
Historic England listing

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

Description

Lock No. 70 is a lock on the Grand Union Canal, built circa 1797 as part of the Grand Junction Canal (later the Grand Union Canal). The lock has brick walls, timber gates, and timber and iron bollards, likely cast in 1896 by the London and Lancashire Engineering Co. It measures 88 feet by 16 feet, designed to accommodate narrow boats in pairs. The structure is included on the list for its group value, alongside Home Park Lock House on Station Road. Note that the western half of the lock falls within the civil parish of King’s Langley in Dacorum Borough.

Local climate

Home Park Lock 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 3 transactions since 2007
  • 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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