British Listed Buildings

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Syon House, Hounslow

Description: Syon House

Grade: I
Date Listed: 15 June 1951
English Heritage Building ID: 202629

OS Grid Reference: TQ1728276685
OS Grid Coordinates: 517282, 176685
Latitude/Longitude: 51.4770, -0.3126

Location: 3 Brent Lea, Brentford TW8 8JF

Locality: Hounslow
County: Greater London
Country: England
Postcode: TW8 8JF

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Listing Text


Syon House
TQ 1776 33/361 15.6.51.


Built on remains of a Brigittine Abbey nunnery (1430-70). Part of C15
undercroft remains. Protector Somerset reconstructed the house in 1547-52,
substantially in its present shape. The house, 3-storeys with crenellated
top and gable turrets, is built on a hollow square. East front ground
floor loggia mid C17. Remodelled inside and out by Robert Adam 1767-5.
In 1874 the Percy Lion, transferred from Old Northumberland House at Charing
Cross was erected on the river front. Slight war damage, 2nd floor of
North West tower rebuilt; 2 statues on columns in anteroom destroyed.
Vide RCHM; p86; Country Life V, p112, XLVI, pp728, 802, 838, 874. Associated
with the house; Catherine Howard 1541-2, Protector Somerset, executed 1552;
John, Duke of Northumberland and Lady Jane Grey, both executed 1553; the
nuns recalled from the Netherlands 1557-8; Henry Percy, Earl of Northumberland,
involved in the Gunpowder plot; the children of Charles I; Charles II in
the plague of 1665 and the Dukes of Northumberland of 1766 who still hold

Syon House and its Lodges form a grade I group.

Listing NGR: TQ1728276685

This text is a legacy record and has not been updated since the building was originally listed. Details of the building may have changed in the intervening time. You should not rely on this listing as an accurate description of the building.

Source: English Heritage

Listed building text is © Crown Copyright. Reproduced under licence.