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17 Graham Terrace London SW1W 8JE

25/06879/CLOPUDCertificate of Lawfulness (proposed)Approved
Outline / PiP

Approved on 12 February 2026

Site boundary (council red line)

Proposal

Replacement casement window on the second floor, including maintenance, overhauling, and draught proofing to seven sash windows at the front and rear of the building.

Received
24 September 2025
Ward
Knightsbridge & Belgravia
  1. Received24 Sep
  2. Validated30 Sep
  3. Consult.
  4. Target25 Nov
  5. Decided12 Feb

Decided in 135 days (council typically 49)

About this application

This is an outline application for window replacement at 17 Graham Terrace London SW1W 8JE. Westminster has handled 218 applications of this type. This one was decided in 141 days, 13 weeks longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 13 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 383 applications across Knightsbridge & Belgravia. We hold 1,477 applications in total for the SW1W postcode area.

82% of outline 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
SW1W 8JE
Application type
Certificate of Lawfulness (proposed)
Scale / size
Small

Planning application dates

Date validated
30 September 2025
Target decision date
25 November 2025

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14358474
Comments
0
Documents
10

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Belgravia
  • Listed building: Grade II: 5-17, Graham Terrace Sw1On or next to this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
  • 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.

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

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

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.

Source: Westminster

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

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