Royal Intitute of British Architects Drawings Collection
ROYAL INTITUTE OF BRITISH ARCHITECTS DRAWINGS COLLECTION, 21, PORTMAN SQUARE W1
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- I
- List Entry Number:
- 1227092
- Date first listed:
- 10-Sept-1954
- List Entry Name:
- Royal Intitute of British Architects Drawings Collection
- Statutory Address:
- ROYAL INTITUTE OF BRITISH ARCHITECTS DRAWINGS COLLECTION, 21, PORTMAN SQUARE W1
Location
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Images of England Project
- Date:
- 2001-11-10
- Reference:
- IOE01/05555/23
- Rights:
- © Mr Richard M. Brown. Source: Historic England Archive
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Discover moreOfficial list entry
- Heritage Category:
- Listed Building
- Grade:
- I
- List Entry Number:
- 1227092
- Date first listed:
- 10-Sept-1954
- List Entry Name:
- Royal Intitute of British Architects Drawings Collection
- Statutory Address 1:
- ROYAL INTITUTE OF BRITISH ARCHITECTS DRAWINGS COLLECTION, 21, PORTMAN SQUARE W1
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:
- ROYAL INTITUTE OF BRITISH ARCHITECTS DRAWINGS COLLECTION, 21, PORTMAN SQUARE W1
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 27986 81308
Details
TQ 2781 SE CITY OF WESTMINSTER PORTMAN SQUARE, Wl 54/46 (north side) 10.9.54 No. 21 (R.I.B.A. Drawings Collection) G.V. I End of terrace town house. c.1772, by James Adam for the collector William Loch of Norbury; retaining fine Adam interiors. Brown brick; concealed slate roof. Elevation designed to form one composition with No. 20 (Home House) q.v. 4 storeys (attic storey an addition) and basement. 3 windows wide, with 5-window return with entrance to Gloucester Place (canted bay to north). Semicircular arched doorway with side lights and fanlight under stucco Doric porch, to return. Ground floor sashes set in blind arcade continued from No. 20, with same stucco roundels in spandrels; 1st floor French casements to Portman Square and glazing bar sashes to upper floors, all under flat gauged arches. Guilloche bands, garland and paterae panels and cornice as on No. 20; the attic storey with crowning cornice but without balustraded parapet. Later C.19 cast iron balcony to 1st floor. Similar details to return. Cast iron area railings with urn finials. Interior retains elegant wrought iron staircase balustrade in top lit well; vaulted and apsed anteroom with Venetian window and back drawing room on 1st floor retain painted and stuccoed interiors; door furniture; chimneypieces etc.
Listing NGR: TQ2798681308
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 424711
- Legacy System:
- LBS
Sources
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 04-Jul-2026 at 09:54:20.
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.