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Permitted20/01036/NMASubmitted 6 years agoWindows and doors

78 St James's Street Westminster SW1A 1LF

Amendments to planning permission dated 22 July 2019 (RN: 19/03873) for alterations at roof level including the installation of plant rooms and the creation of a pavilion rooftop extension and terrace area, along with other alterations including creation of an auditorium at the lower ground floor level together with the in-fill of the atrium space to provide access to the upper floors of the building. Associated alterations to Little St James's Street entrance, NAMELY, removal of additional dry-lining, removal of walls within the new-build extension, removal of modern smoke vents and doors in the listed building, reinstatement of windows in the listed building at the lower ground floor level, reconfiguration of approved auditorium space as well as localised areas within the building, replacement of the existing cladding to the modern office entrance with stone to match existing, realignment of the modern office entrance revolving doors, in-fill of the arches in the listed building, installation of full-height fire-proof glass to replace the existing glazed balustrade in the atrium at first and third floor levels, installation of automatic opening vent (AOV) in the stairwell at fifth and fixth floor levels, creation of new openings within the listed building fabric and the new-build extension creation of new sumps to accommodate the reconfiguration of the changing rooms (LINKED TO 20/01152/LBC).

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Progress

Submitted
13 Feb 2020
— completed
Validated
13 Feb 2020
— completed
Consultation
—
— completed
Target date
12 Mar 2020
— completed
Decided
19 Mar 2020
— completed

Application details

Reference
20/01036/NMA
Local authority
Westminster
Postcode
SW1A 1LF
Ward
SJB_02
Application type
All Other
Property type
Commercial

Key dates

Submitted
13 Feb 2020
Validated
13 Feb 2020
Target decision
12 Mar 2020
Decided
19 Mar 2020

Estimated project value

£5k–£16k

Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: FMB 2026 double glazing guide, 3-bed semi full replacement.

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 8 recent sales are listed below.

Homes here go for about £1,950,000 — the median of the last 6 market sales in SW1A (the wider postcode district), £1,400,000 to £5,150,000.

Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.

Planning constraints

No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.

Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.

Nearby applications