19,19A AND 20, BROAD SANCTUARY SW1

19,19A AND 20, BROAD SANCTUARY SW1

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Overview

Heritage Category:
Listed Building
Grade:
I
List Entry Number:
1219626
Date first listed:
24-Feb-1958
List Entry Name:
19,19A AND 20, BROAD SANCTUARY SW1
Statutory Address:
19,19A AND 20, BROAD SANCTUARY SW1
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Official list entry

Heritage Category:
Listed Building
Grade:
I
List Entry Number:
1219626
Date first listed:
24-Feb-1958
List Entry Name:
19,19A AND 20, BROAD SANCTUARY SW1
Statutory Address 1:
19,19A AND 20, BROAD SANCTUARY 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.

Understanding list entries

Corrections and minor amendments

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.

Understanding list entries

Corrections and minor amendments

Location

Statutory Address:
19,19A AND 20, BROAD SANCTUARY 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 30014 79417

Details

TQ 3079 SW CITY OF WESTMINSTER BROAD SANCTUARY, SW1 101/8 24.2.58 (ABBEY PRECINCT AND WESTMINSTER SCHOOL) Nos. 19, 19A and 20.

G.V. I

School houses. Range of Abbey buildings of late C.14 and C.15 origin incorporating part of the Cellarer's Building (c.f. The Great Cloisters), the Abbey Guest House and the remains of the Blackstole Tower, taken over and extended by the school in the C.15 and C.16, with C.17/C.18 alterations and additions. Stone rubble with C.18 brickwork to 2nd floor; leaded and tiled roofs, 3 storeys of irregular height. 6 window range (No. 19), including Blackstole Tower, followed by irregularly fenestrated 4-window range (No. 20). The archway under Blackstole Tower to left is late C.14 with carved spandrels to arch, and tierceron-vaulted passage behind leading to No. 19A. No. 20 has a later C.18 Gothick doorway to right, adjoining Blackstole Tower, with fanlight and side lights and drip mould-cornice over. No. 19 has recessed glazing bar sashes in stucco reveals and 2-light stone mullioned window to 3rd floor above doorway. No. 20 has small Gothic lights irregularly grouped to ground floor; glazing bar sashes and a 3-light, stone mullioned, cusped headed window to upper floors. Brick parapet partly crenellated. The rear has late C.17 and C.18 brick additions with 2 three-storey fronts tangented to the Little Dean's elevation of the tower and archway of No. 18, the adjoining single bay front with a Venetian window to the 1st floor and the further 3-bay front with recessed sashes under flat gauged arches, both with pedimented doorways. Inside No. 20 contains the remains of the Cellarer's Building and Abbey Guest House with a tierceron-vaulted ground floor with wall shafts and remains of some original windows in east wall. On the 1st floor a late C.14 flat pitched roof with tie beams partially survives, etc. See also under Great Cloisters.

R.C.H.M Westminster School; L.E. Tanner.

Listing NGR: TQ3001479397

Legacy

The contents of this record have been generated from a legacy data system.

Legacy System number:
208823
Legacy System:
LBS

Sources

Books and journals
Inventory of London I Westminster Abbey, (1924)
Tanner, LE, Westminster School, ()

Legal

This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.

Ordnance survey map of 19,19A AND 20, BROAD SANCTUARY SW1

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 06-Jun-2026 at 19:05:38.

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© Crown copyright [and database rights] 2026. OS AC0000815036. Use of this mapping is subject to Terms and Conditions.

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.

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