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14 Wilton Place London SW1X 8RL

26/02419/LBCListed Building Consent ApplicationApproved
Listed building consent

Approved on 21 July 2026

Site boundary (council red line)

Proposal

Excavation of a basement beneath the footprint including removal of the conservatory to create a new rear extension, with a new stair leading down to the courtyard terrace at lower-ground level. Installation of plant equipment. including Internal and external alterations to a residential property. (Linked with 26/02418/FULL)

Received
14 April 2026
Ward
Knightsbridge & Belgravia
Agent
Maddox and Associates Ltd
  1. Received14 Apr
  2. Validated14 Apr
  3. Consult.
  4. Target9 Jun
  5. Decided21 Jul

Decided in 98 days (council typically 49)

About this application

This is a heritage application for a rear extension at 14 Wilton Place London SW1X 8RL. Westminster has handled 2,677 applications of this type. This one was decided in 98 days, 7 weeks longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 5 listed buildings nearby. There have been 4 other applications at this address. In the past year there have been 383 applications across Knightsbridge & Belgravia. We hold 1,284 applications in total for the SW1X postcode area.

93% of heritage 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
SW1X 8RL
Application type
Listed Building Consent Application
Scale / size
Small

Planning application dates

Date validated
14 April 2026
Consultation expiry
20 May 2026
Target decision date
9 June 2026

Applicant and agent

Agent
Maddox and Associates Ltd
Agent address
33 Broadwick Street London W1F 0DQ United Kingdom

Planning decision

Statutory period
56 days

Publicity

Last advertised
29 April 2026
Advertisement expiry
20 May 2026

Additional information

Planning Portal ID
PP-14701009
Comments
0
Documents
1

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Belgravia
  • Listed building: 9 Wilton Place London SW1X 8RLOn or next to this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
  • Tree Preservation Order: Ref W48Protected tree on or next to this site · +6 more
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)

flood storage areas, listed buildings, 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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