30, Sackville Street, W1S 3DY

25/00501/FULLRemoval/Variation of a conditionApproved

Discharge / amendments

Approved on 8 May 2025

Approximate site (title boundary)

Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Variation of condition 1 of planning permission dated 13th April 2022 (RN 21/03068/FULL) for the Internal and external alterations including the erection of a single storey conservatory extension at rear ground floor level for additional Class E floorspace, installation of plant, provision for cycle parking, landscaping and other associated works incidental to the application proposal - NAMELY, drawings amended to show the present use of the building as offices to continue, including extension; omit addition of plant equipment in the rear courtyard and omit erection of a landscaped canopy above the courtyard and adjacent screen; and omit the approved glazed timber door and sidelights to the rear extension at basement level, retain existing window openings at basement level and convert them to full height glazed timber doors. (S73 application)

Submitted: 27 February 2025
Council: City of Westminster

ReceivedSubmitted27 Feb
ValidatedValidated
Consult.Consultation
TargetTarget Date
DecidedDecided8 May

Decided in 70 days (council typically 49)

About this application

This is a planning application for a rear extension at 30, Sackville Street, W1S 3DY. Westminster has handled 156 applications of this type. This one was decided in 70 days, 3 weeks longer than Westminster's typical decision time. The site is in the Mayfair conservation area, with 15 listed buildings nearby. There have been 4 other applications at this address. In the past year there have been 465 applications across WEW_22. We hold 791 applications in total for the W1S postcode area.

86% of removal/variation of a condition applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode: W1S 3DY
Application type: Removal/Variation of a condition

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Mayfair
Listed building: Grade II: 30 and 30a, Sackville Street W1On this site · +3 more
Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
Flood zone 1: Low probability (rivers and sea)

Also checked, none recorded (21)

flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Planning history at this site

12 other applications at this property, newest first.

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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