Grade II* listed · Westminster

Gwydyr House (Welsh Office)

Gwydyr House (Welsh Office) is a Grade II* listed building in Westminster, first listed on 5 February 1970. It is one of 373 Grade II* entries among 3,996 listed buildings in Westminster; 27% of Westminster’s current entries were listed before it.

List entry
Field	Value
Name	Gwydyr House (Welsh Office)
Grade	Grade II* — particularly important, more than special interest
List entry number	1066107
Date first listed	5 February 1970
Local planning authority	Westminster
Location	51.50414, -0.12584 (map)
Official record	Historic England list entry 1066107

Planning works on this listed building?

Planium checks which consents Westminster will require for your works on Gwydyr House (Welsh Office), 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 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 Gwydyr House (Welsh Office)

Name	Grade	Distance
Royal United Services Institute	II*	19 m
Statue of Field Marshal Earl Haig	II*	32 m
Banqueting House	I	48 m
Ministry of Defence, Containing Sixteenth Century Undercroft and Historic Rooms Numbers 13, 24, 25, 27 and 79	I	69 m
Dover House Scottish Office	I	79 m
Statue of the Eighth Duke of Devonshire	II	82 m
Treasury Buildings Treasury Buildings (Cabinet Office and Privy Council Office)	I	83 m
Cadiz Memorial	II	101 m
Forecourt Railings, Gates and Guardhouses to Horseguards	I	106 m
Statue of Field Marshal Earl Roberts	II	114 m

Frequently asked questions

Is Gwydyr House (Welsh Office) listed?

Yes. Gwydyr House (Welsh Office) is on the National Heritage List for England as a Grade II* listed building, list entry number 1066107, first listed on 5 February 1970. The full list entry with its description and map is on Historic England’s website.

Do I need consent for works to Gwydyr House (Welsh Office)?

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.