History in Structure

This site is entirely user-supported. See how you can help.

Syon House

A Grade I Listed Building in Hounslow, Hounslow

More Photos »
Approximate Location Map
Large Map »


Latitude: 51.477 / 51°28'37"N

Longitude: -0.3126 / 0°18'45"W

OS Eastings: 517282

OS Northings: 176685

OS Grid: TQ172766

Mapcode National: GBR 74.PVT

Mapcode Global: VHGR2.J4LL

Plus Code: 9C3XFMGP+QX

Entry Name: Syon House

Listing Date: 15 June 1951

Grade: I

Source: Historic England

Source ID: 1080318

English Heritage Legacy ID: 202629

Location: Hounslow, London, TW8

County: Hounslow

Electoral Ward/Division: Syon

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

Find accommodation in


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

Selected Sources

Book cover links are generated automatically from the sources. They are not necessarily always correct, as book names at Amazon may not be quite the same as those used referenced in the text.

Source title links go to a search for the specified title at Amazon. Availability of the title is dependent on current publication status. You may also want to check AbeBooks, particularly for older titles.

Recommended Books

Other nearby listed buildings

BritishListedBuildings.co.uk is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact BritishListedBuildings.co.uk for any queries related to any individual listed building, planning permission related to listed buildings or the listing process itself.

British Listed Buildings is a Good Stuff website.