Grade II listed · Buckinghamshire

Mill House, Thornborough Mill

Mill House, Thornborough Mill is a Grade II listed building in Buckinghamshire, first listed on 6 March 1978. It is one of 5,438 Grade II entries among 5,867 listed buildings in Buckinghamshire; 38% of Buckinghamshire’s current entries were listed before it.

List entry
FieldValue
NameMill House, Thornborough Mill
GradeGrade II — special interest
List entry number1232250
Date first listed6 March 1978
Local planning authorityBuckinghamshire
Location52.01174, -0.93056 (map)
Official recordHistoric England list entry 1232250

Planning works on this listed building?

Planium checks which consents Buckinghamshire will require for your works on Mill House, Thornborough Mill, lists what the heritage statement must cover and drafts the application text.

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 Mill House, Thornborough Mill

Frequently asked questions

Is Mill House, Thornborough Mill listed?
Yes. Mill House, Thornborough Mill is on the National Heritage List for England as a Grade II listed building, list entry number 1232250, first listed on 6 March 1978. The full list entry with its description and map is on Historic England’s website.
Do I need consent for works to Mill House, Thornborough Mill?
Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Buckinghamshire, 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.