Latitude: 51.4697 / 51°28'10"N
Longitude: -0.3234 / 0°19'24"W
OS Eastings: 516553
OS Northings: 175854
OS Grid: TQ165758
Mapcode National: GBR 75.1EP
Mapcode Global: VHGR2.BBX6
Plus Code: 9C3XFM9G+VM
Entry Name: Northumberland House
Listing Date: 21 May 1973
Last Amended: 19 January 1977
Grade: II
Source: Historic England
Source ID: 1080316
English Heritage Legacy ID: 202624
ID on this website: 101080316
Location: Isleworth, Hounslow, London, TW7
County: London
District: Hounslow
Electoral Ward/Division: Isleworth
Parish: Non Civil Parish
Built-Up Area: Hounslow
Traditional County: Middlesex
Lieutenancy Area (Ceremonial County): Greater London
Church of England Parish: All Saints Isleworth
Church of England Diocese: London
Tagged with: Building
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
External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.






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