Romney Mews London

23/00659/FULLFull Planning Permission ApplicationApproved

Full

Approved on 27 March 2023

Council decision: Application PermittedDelegated (officer decision)

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 11 June 2019 (RN:19/02013/FULL) for, 'Erection of three bedroom dwellinghouse (Class C3) over ground to fourth floor level'; NAMELY, to enable amendments to the footprint of the ground floor and fourth floors, installation of roof safety guardrails, roof alterations including alterations to mansard pitch, replacement of rooflight with dormer window to front elevation, replacement of dormer with panelling to rear roof, increase of height of rear parapet roof by 225mm, drainage and the provision of a sedum roof. (S73 Application)

Received: 2 February 2023
Decision level: Delegated (officer decision)
Council: City of Westminster
Ward: Marylebone

ReceivedReceived2 Feb
ValidatedValidated14 Feb
Consult.Consultation
TargetTarget Date11 Apr
DecidedDecided27 Mar

Decided in 41 days (council typically 49)

About this application

This is a full planning application for a dormer extension at Romney Mews London. Westminster has handled 4,484 applications of this type. This one was decided in 53 days, 4 days longer than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 2 listed buildings nearby. There have been 8 other applications at this address. In the past year there have been 171 applications across Marylebone.

86% of full 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

Application type: Full Planning Permission Application
Scale / size: Small

Planning application dates

Date validated: 14 February 2023
Consultation expiry: 22 March 2023
Target decision date: 11 April 2023

Applicant and agent

Agent: Graham + Sibbald
Agent address: 233 St Vincent Street Glasgow G2 5QY

Planning decision

Statutory period: 56 days

Publicity

Last advertised: 1 March 2023
Advertisement expiry: 22 March 2023
Site notice start: 16 February 2023
Site notice end: 9 March 2023

Additional information

Planning Portal ID: PP-11896560
Comments: 0
Documents: 24

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Portman Estate
Article 4 direction: Article 4 Basement Development Permitted Rights Removed
Flood zone 1: Low probability (rivers and sea)

Also checked, none recorded (22)

flood storage areas, listed buildings, 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.

Associated applications

2025
21 Jan
Variation of Condition 1 of planning permission dated 26th February 2025 (RN: 24/08906/FULL
ApprovedVariation of conditions (s73)25/00135/FULL
2024
19 Dec
Variation of condition 1 of planning permission dated 27th March 2023 (RN:23/00659/FULL
ApprovedVariation of conditions (s73)24/08906/FULL
2024
1 Oct
Amendents to planning permission dated 27th March 2023 (RN 23/00659/FULL
PendingNon-material amendmentAmendment24/06867/NMA
2023
2 Feb
Variation of Condition 1 of planning permission dated 11 June 2019 (RN:19/02013/FULL
This applicationApprovedVariation of conditions (s73)23/00659/FULL

Planning history at this site

7 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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