Grade II* listed · Cornwall

Merthen

Merthen is a Grade II* listed building in Cornwall, first listed on 10 July 1957. It is one of 583 Grade II* entries among 12,596 listed buildings in Cornwall; 5% of Cornwall’s current entries were listed before it.

List entry
FieldValue
NameMerthen
GradeGrade II* — particularly important, more than special interest
List entry number1142128
Date first listed10 July 1957
Local planning authorityCornwall
Location50.09421, -5.17923 (map)
Official recordHistoric England list entry 1142128

Planning works on this listed building?

Planium checks which consents Cornwall will require for your works on Merthen, lists what the heritage statement must cover and drafts the application text.

What the grade means for works

Grade II* buildings are particularly important buildings of more than special interest — about 5.8% of listed buildings. Applications for listed building consent are notified to Historic England.

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 Merthen

Frequently asked questions

Is Merthen listed?
Yes. Merthen is on the National Heritage List for England as a Grade II* listed building, list entry number 1142128, first listed on 10 July 1957. The full list entry with its description and map is on Historic England’s website.
Do I need consent for works to Merthen?
Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Cornwall, 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.