20 AND 21, ST JAMES'S SQUARE SW1
20 AND 21, ST JAMES'S SQUARE SW1
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- I
- List Entry Number:
- 1264890
- Date first listed:
- 24-Feb-1958
- List Entry Name:
- 20 AND 21, ST JAMES'S SQUARE SW1
- Statutory Address:
- 20 AND 21, ST JAMES'S SQUARE SW1
Location
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Images of England Project
- Date:
- 2001-08-29
- Reference:
- IOE01/05181/30
- Rights:
- © Mr John Fenton. Source: Historic England Archive
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Official list entry
- Heritage Category:
- Listed Building
- Grade:
- I
- List Entry Number:
- 1264890
- Date first listed:
- 24-Feb-1958
- List Entry Name:
- 20 AND 21, ST JAMES'S SQUARE SW1
- Statutory Address 1:
- 20 AND 21, ST JAMES'S SQUARE SW1
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:
- 20 AND 21, ST JAMES'S SQUARE SW1
The building or site itself may lie within the boundary of more than one authority.
- County:
- Greater London Authority
- District:
- City of Westminster (London Borough)
- Parish:
- Non Civil Parish
- National Grid Reference:
- TQ 29467 80255
Details
TQ 2980 SW CITY OF WESTMINSTER ST. JAMES'S SQUARE SW1 81/103 Nos 20 and 21 24.2.58 GV I Terraced town houses. No 20 (comprising 3 northernmost bays) of 1771-75 by Robert Adam for Sir Watkin Williams Wynn, No 21 rebuilt very tactfully in 1936 by Mewls and Davis so as to duplicate the facade of No 20 and form one composition. Portland stone, slate roof. 4 storeys, basement and stone dormers in mansard of 1936. 7 windows wide. Rusticated ground floor with windows and doors each end in semicircular arched openings, doors with side lights and delicately patterned fanlights; glazing bar sashes. The square headed glazing bar sashes of 1st and 2nd floors, those on piano nobile in semicircular arched panels with consoled pediments, are articulated by a giant order of fluted Corinthian pilasters carrying main entablature with Paterae frieze. 1936 attic storey with dentil cornice and balustraded parapet. Enriched plat band to 2nd floor between giant pilasters. Cast iron area railings. Rear elevation has a bow and a wing on north side of courtyard. Very fine Adam interior of No 20 virtually intact; grand staircase with copper balustrade of openwork balusters, top lit in oblong well, former Eating Room and Music Room on ground floor, 1st floor drawing rooms, all retaining original plasterwork, paintings by Zucchi, mahogany doors and door furniture etc Survey of London; vol XXIX .
Listing NGR: TQ2965580489
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 426688
- Legacy System:
- LBS
Sources
Books and journals
Survey of London in The Parish of St James Westminster Part 1 South of Piccadilly: Volumes 29 and 30, Vol. 29, (1960)
Other
Register of Parks and Gardens of Special Historic Interest in England, Part 17 Greater London
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 25-Jun-2026 at 05:32:54.
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.