Grade II listed · Three Rivers

London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill

London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill is a Grade II listed building in Three Rivers, first listed on 3 October 1985. It is one of 331 Grade II entries among 348 listed buildings in Three Rivers; 35% of Three Rivers’s current entries were listed before it.

List entry
Field	Value
Name	London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill
Grade	Grade II — special interest
List entry number	1101565
Date first listed	3 October 1985
Local planning authority	Three Rivers
Location	51.61319, -0.40396 (map)
Official record	Historic England list entry 1101565

Planning works on this listed building?

Planium checks which consents Three Rivers will require for your works on London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill, lists what the heritage statement must cover and drafts the application text.

Ask Planium what consent you need

What the grade means for works

Grade II buildings are of special interest and make up over 90% of listed buildings in England. Most alterations, extensions and many internal changes still need listed building consent from the council.

The protection covers the whole building, inside and out, plus fixtures and attached structures. Typical works that need consent: replacing windows or doors, removing walls or historic fabric, changing roof coverings, installing solar panels or external insulation, and adding extensions.

Listed buildings near London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill

Name	Grade	Distance
Coal Duty Boundary Post Outside the Lodge on East Side of Road	II	7 m
Admiralty House	II	332 m
Lodge to Admiralty House	II	446 m
The Glade	II	468 m
Greenfields School	II	890 m
Upland Court	II	1.4 km
London Coal Duty Marker on County Boundary on West Railway Embankment About 270 Metres South of Road	II	1.8 km
Oxhey Chapel	II*	1.8 km
Hamper Mill House	II	2.4 km
The Old Cottage	II	2.4 km

Frequently asked questions

Is London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill listed?

Yes. London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill is on the National Heritage List for England as a Grade II listed building, list entry number 1101565, first listed on 3 October 1985. The full list entry with its description and map is on Historic England’s website.

Do I need consent for works to London Coal Duty Marker on County Boundary Where Road Meets Potter Street Hill?

Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Three Rivers, in addition to any planning permission or building regulations approval. Like-for-like repairs often do not, but confirm with the council’s conservation officer before you start.

Source: National Heritage List for England, © Historic England 2026, via planning.data.gov.uk. Contains Ordnance Survey data © Crown copyright and database right. Licensed under the Open Government Licence v3.0. Retrieved 12 October 2026. Local authority assigned from the list entry point. This page is a summary — the legal record is the official list entry.