Grade II listed · City of London

1, King William Street

1, King William Street is a Grade II listed building in City of London, first listed on 15 May 1990. It is one of 445 Grade II entries among 613 listed buildings in City of London; 85% of City of London’s current entries were listed before it.

List entry
Field	Value
Name	1, King William Street
Grade	Grade II — special interest
List entry number	1252015
Date first listed	15 May 1990
Local planning authority	City of London
Location	51.51247, -0.08842 (map)
Official record	Historic England list entry 1252015

Planning works on this listed building?

Planium checks which consents City of London will require for your works on 1, King William Street, 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 1, King William Street

Name	Grade	Distance
Church of St Mary Woolnoth	I	42 m
Phoenix House	II	44 m
Pair of Piers and Iron Gates and Screen at Entrance to Church of St Mary Woolnoth	II	44 m
1-6, Lombard Street Ec3	II	60 m
15, Abchurch Lane Ec4	II	75 m
20, St Swithin'S Lane	II*	79 m
19, St Swithin'S Lane and Cellar in Sub Basement	II*	80 m
Gate Piers to Churchyard of Church of St Stephen Gate Piers to Churchyard of Church of St Stephen, Wallbrook	II	80 m
1, CORNHILL EC3 (See details for further address information)	II	84 m
13 and 14, Cornhill Ec3	II	87 m

Frequently asked questions

Is 1, King William Street listed?

Yes. 1, King William Street is on the National Heritage List for England as a Grade II listed building, list entry number 1252015, first listed on 15 May 1990. The full list entry with its description and map is on Historic England’s website.

Do I need consent for works to 1, King William Street?

Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from City of London, 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.