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Planning application

15 Colnbrook Street London Southwark SE1 6EZ

Awaiting decision Southwark 26/AP/1114 Householder Application

Works: Extension Windows or glazing Domestic

Read from the description, not a valuation. How we read the register

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

First-floor rear extension to existing outrigger; lowering & reinstatement of front parapet entablature; repair and re-glazing of existing windows; replacement of rear basement window with French doors; new front lightwell staircase; installation of Air Source Heat Pump/Air Conditioning and building services upgrades; associated internal alterations, repairs, and landscaping.

As published by the council, reference 26/AP/1114

Application record

Reference
26/AP/1114
Type
Householder Application
Status
Under consideration/assessment
Received
20 Apr 2026
Validated
7 May 2026
Ward
St Georges
Parish
Borough, Bankside And Walworth
Postcode
SE1 6EZ

Site history

Applications at this address on the Southwark register

This site has had 4 applications since 2022: 0 approved, 2 refused.

  • 26/AP/1115 Awaiting decision

    15 Colnbrook Street London Southwark SE1 6EZ

    Listed building consent for the first-floor rear extension to existing outrigger; lowering & reinstatement of front parapet entablature; repair and re-glazing of existing windows; replacement of rear basement window with French doors; new front lightwell staircase; installation of Air Source Heat Pump/Air Conditioning and building services upgrades; associated internal alterations, repairs, and landscaping.

    Submitted 20 Apr 2026 Heritage and listed buildings
  • 22/AP/1032 Refused

    15 Colnbrook Street London Southwark SE1 6EZ

    Construction of extension on rear outrigger, restoration of front facade and removal of chimney breast at lower ground floor

    Decided 24 Jun 2022 Heritage and listed buildings
  • 22/AP/0881 Refused

    15 Colnbrook Street London Southwark SE1 6EZ

    Construction of rear extension on outrigger

    Decided 24 Jun 2022 Householder

Timeline

Dates from the published record

  1. 20 Apr 2026

    Received by Southwark

  2. 7 May 2026

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 2 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Southwark took a median of 52 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice registered in London

68 applications on PlanIndex · across 18 councils · 72% granted

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Documents

Plans, drawings, consultee responses and the officer's report

55 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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Open the documents

What happens while it is decided

This application is with Southwark for determination, against a statutory target of eight weeks. Over the last year Southwark decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

About householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 15 Colnbrook Street London Southwark SE1 6EZ

    22/AP/1032 Submitted 14 Mar 2022 4m away

    Construction of extension on rear outrigger, restoration of front facade and removal of chimney breast at lower ground floor

    Refused Heritage and listed buildings Extension 30 docs
  • 15 Colnbrook Street London Southwark SE1 6EZ

    22/AP/0881 Submitted 7 Mar 2022 4m away

    Construction of rear extension on outrigger

    Refused Householder Extension 29 docs
    Domestic
  • 15 Colnbrook Street London Southwark SE1 6EZ

    26/AP/1115 Submitted 20 Apr 2026 7m away

    93% historically approved · decision due ~30 Jun

    Listed building consent for the first-floor rear extension to existing outrigger; lowering & reinstatement of front parapet entablature; repair and re-glazing of existing windows; replacement of rear basement window with French doors; new front lightwell staircase; installation of Air Source Heat Pump/Air Conditioning and building services upgrades; associated internal alterations, repairs, and landscaping.

    Awaiting decision Heritage and listed buildings Extension Windows or glazing 42 docs
  • 13 Colnbrook Street London Southwark SE1 6EZ

    23/AP/2231 Submitted 9 Aug 2023 11m away

    Details of Condition 3 Specification and method statements of waterproofing to basement walls and floor as required 21/AP/0188 dated 11/03/2021 for Internal refurbishment of the building on all floors including repair of historic fabric, damp proof works, new openings and wider openings at Lower Ground Floor, removal of modern bathroom fittings First Floor rear room rmoval of modern partitions at Second Floor level and installation of bathroom. External alterations including widening of the outrigger at Ground Floor level and replacement of the existing window with a new sash window in a wider opening. Widening of opening in rear wall and installation of new timber French doors and replacement of uPVC window with a timber sash. Removal of existing door to the outrigger and filling in of opening with new brickwork to match existing. Installation of a rooflight. Replacement of the mansard windows with doors on the front elevation.

    Granted Conditions Extension Loft or dormer +1 12 docs
  • The Garages Land To Rear Of 108 St Georges Road London Southwark SE1 6EZ

    26/AP/2161 Submitted 22 Jul 2026 38m away

    95% historically approved · decision due ~1 Oct

    Non-material amendment of planning permission ref: 21/AP/2433 dated 21.01.2022 for 'Demolition of an existing garage and construction of a two-storey, 1 bedroom dwelling house.' Amendments include: 1. The position of the internal staircase is to be revised to create a more open and functional layout at both ground floor and basement levels. 2. The bathroom layout is to be reconfigured to provide a more generous entrance hall. 3. The approved front window is proposed to be replaced with a double-glazed sliding door incorporating a 100mm opening restrictor on the ground floor. 4. The high-level rear window is proposed to be repositioned slightly to align with the revised internal layout. 5. New slot windows are proposed to the side elevation to augment daylight in the entrance hall. 6. Storage repositioned.

    Awaiting decision Demolition Windows or glazing
    Domestic
  • 42 Gladstone Street London Southwark SE1 6EY

    22/AP/2774 Submitted 4 Aug 2022 40m away

    Proposal to provide rooflight access to existing roof and extension of internal stairs to roof to provide roof access. Removal of existing steel access ladder from front balcony and mansard roof.

    Withdrawn Heritage and listed buildings Extension Loft or dormer 18 docs

In Southwark

  • 26/AP/0707 Granted

    33 Abbotswood Road London Southwark SE22 8DJ

    Construction of a rear dormer extension and ground floor rear extension.

    11 Mar 2026 Householder
  • 26/AP/0784 Granted

    60 Grove Park London Southwark SE5 8LF

    Refurbishment of the property including replacement of glazing with thermally efficient conservation windows templated after originals, construction of a single-storey rear extension, a loft extension, minor internal partition alterations, and removal of external soil vent pipes.

    18 Mar 2026 Householder
  • 26/AP/1488 Granted

    15 Canon Beck Road London Southwark SE16 7DJ

    Loft conversion including the insertion of 2 no. rooflights to the front roof slope; conversion of the existing garage to a habitable room with an associated window to replace the existing garage door on the front elevation, installation of an Air Source Heat Pump and other alterations to the rear elevation fenestration at ground floor level.

    22 May 2026 Householder
  • 26/AP/0971 Granted

    86 Henslowe Road London Southwark SE22 0AS

    Retrospective planning permission for alterations to front garden layout including a front porch with projecting canopy, alterations to window apertures and fenestration, provision of cycle and refuses stores, along with hard and soft landscaping. new bin store and raised porch roof and revisions to front elevation fenestration.

    2 Apr 2026 Householder
  • 26/AP/1519 Granted

    61 Tyrrell Road London Southwark SE22 9NE

    Construction for a rear and side wrap around ground floor extension

    27 May 2026 Householder