11- 15 St Thomas Street London Southwark SE1 9RY
Proposal
Variation of condition 5v 'Detailed design of the proposed gates from cast-iron to part cast iron for decorative work and part hollow steel sections for the structure' pursuant to listed building consent 24/AP/1197 'Listed Building Consent for alterations for refurbishment works to the offices at 11-15 St Thomas Street; SE1, to reconfigure the internal walls and install new wiring and services throughout. Existing historic fabric is to be retained and repaired with only modern C20 additions to be removed. Externally it is proposed to remove items installed to the rear of the site in the courtyard, to include a generator, metal chimney flue and associated plant. Installation of 7no. AC units on the flat roof of the rear extension. Removal of the existing modern parking gate and bollards and replacement with a wrought iron gate. Replacement of existing lights to the entrance doors with new LED lights (Revised description)'
- Received
- 15 October 2025
- Decided
- 11 November 2025
- Council
- London Borough of Southwark
- ReceivedSubmitted15 Oct
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided11 Nov
Decided in 27 days
This is a planning application for a rear extension at 11- 15 St Thomas Street London Southwark SE1 9RY. Southwark has handled 7,476 applications of this type and approves 94% of them, typically deciding them in 50 days. This one was decided in 27 days, 3 weeks quicker than Southwark's median. The site is in the Borough High Street conservation area, with 11 listed buildings nearby. There has been 1 other application at this address. We hold 2,143 applications in total for the SE1 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Southwark
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 202515 Oct
Variation of condition 5v 'Detailed design of the proposed gates from cast-iron to part cast iron for…
This applicationApprovedVariation of conditions (s73)25/AP/2997 - 202531 Jan
Retrospective consent to discharge Condition 4 (Scheme of Restoration plaster cornices) pursuant to planning…
ApprovedDischarge of conditions25/AP/0260 - 202426 Apr
Listed Building Consent for alterations for refurbishment works to the offices at 11-15 St Thomas Street;SE1…
ApprovedListed building consentPart of24/AP/1197
Planning history at this site
2 other applications at this property, newest first.
Planning constraints
Designations that overlap or adjoin the site outline.
- Flood zone 3: High probability (rivers and sea)Part of the site
- Conservation area: Borough High Street
- Article 4 direction: Central Activities Zone+2 more
- Brownfield land register: Fielden House, 28-42 London Bridge St And 21-27 St Thomas St SE1Register site at or near this address
Also checked, none recorded (20)
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 and heritage coasts.
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 2026-10-09. 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.
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