Northumberland House
Northumberland House, Lower Square, Isleworth, TW7 6RL
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1080316
- Date first listed:
- 21-May-1973
- List Entry Name:
- Northumberland House
- Statutory Address:
- Northumberland House, Lower Square, Isleworth, TW7 6RL
Location
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Images of England Project
- Date:
- 2001-10-20
- Reference:
- IOE01/05599/12
- Rights:
- © Mr Adam Watson. Source: Historic England Archive
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Discover moreOfficial list entry
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1080316
- Date first listed:
- 21-May-1973
- Date of most recent amendment:
- 19-Jan-1977
- List Entry Name:
- Northumberland House
- Statutory Address 1:
- Northumberland House, Lower Square, Isleworth, TW7 6RL
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
Location
- Statutory Address:
- Northumberland House, Lower Square, Isleworth, TW7 6RL
The building or site itself may lie within the boundary of more than one authority.
- County:
- Greater London Authority
- District:
- Hounslow (London Borough)
- Parish:
- Non Civil Parish
- National Grid Reference:
- TQ 16553 75854
Details
This list entry was subject to a Minor Amendment on 21 July 2025 to amend the name and address and to reformat the text to current standards
TQ 1675 NE
21/338
ISLEWORTH
LOWER SQUARE
Northumberland House
(Formerly listed as The Duke of Northumberland previously listed as The Northumberland Arms)
II
Late C18. Two storeys and attic. Stucco, five windows, double-hung sashes in reveals, flat arches. Solid central porch with semi-circular archway with cornice moulding, cornice and blocking course. Doorway with radiating fanlight. Cornice and parapet, the latter with 'The Northumberland Arms' in early C19 raised stucco lettering. Slate mansard roof with gable ends and three flat topped dormers. Two storey identical wings at each end. Each wing has a one storey outbuilt stucco ground floor with a central door, with a narrow sash window on each side. Cornice over blocking course. The second storey, which is set back, has one sash window and a band continues the cills, parapet, hipped slate roof.
Listing NGR: TQ1655375854
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 202624
- Legacy System:
- LBS
Legal
This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.
Map
This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 19-Jul-2026 at 15:26:06.
Download a full scale map (PDF)End of official list entry
All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.