Grade II listed · Westminster

Mary Sumner House

Mary Sumner House is a Grade II listed building in Westminster, first listed on 23 March 2000. It is one of 3,418 Grade II entries among 3,996 listed buildings in Westminster; 95% of Westminster’s current entries were listed before it.

List entry
FieldValue
NameMary Sumner House
GradeGrade II — special interest
List entry number1380170
Date first listed23 March 2000
Local planning authorityWestminster
Location51.49674, -0.12871 (map)
Official recordHistoric England list entry 1380170

Planning works on this listed building?

Planium checks which consents Westminster will require for your works on Mary Sumner House, 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 Mary Sumner House

Frequently asked questions

Is Mary Sumner House listed?
Yes. Mary Sumner House is on the National Heritage List for England as a Grade II listed building, list entry number 1380170, first listed on 23 March 2000. The full list entry with its description and map is on Historic England’s website.
Do I need consent for works to Mary Sumner House?
Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Westminster, 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.