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Planning application

Alpha House 100 Borough High Street London Southwark SE1

Granted Southwark 23/AP/2641 Major application

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Redevelopment of existing office building to provide a new office development (Class E) between 4-8 storeys with roof terraces, retention of existing basement with lowered depth, new ground floor commercial uses (Class E), servicing yard, cycle parking and refuse storage and associated works.

As published by the council, reference 23/AP/2641

Application record

Reference
23/AP/2641
Type
Major application
Status
Granted
Decision
Major - GRANTED
Received
6 Sep 2023
Validated
3 May 2024
Decided
1 Oct 2025
Ward
Borough & Bankside
Parish
Borough, Bankside And Walworth
Decision by
Delegated Panel - Complex

Site history

Applications at this address on the Southwark register

This site has had 2 applications since 2023: 2 approved, 0 refused.

  • 25/AP/3745 Granted

    Alpha House 100 Borough High Street London Southwark SE1

    Certificate of lawful development (proposed) for the demolition of side boundary wall of site/building as part of implementation of planning application 23/AP/2641

    Decided 21 Jan 2026 Lawful development

Timeline

Dates from the published record

  1. 6 Sep 2023

    Received by Southwark

  2. 3 May 2024

    Validated

    Checked as complete and ready for consideration.

  3. 1 Oct 2025

    Decision issued: Major - GRANTED

  4. 26 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 25/AP/3745 Granted

    Alpha House 100 Borough High Street London Southwark SE1

    Certificate of lawful development (proposed) for the demolition of side boundary wall of site/building as part of implementation of planning application 23/AP/2641

    Decided 21 Jan 2026 Lawful development

Who's behind it

Company information only, from the register and Companies House

Agent on file, a planning consultancy registered in Hertford

47 applications on PlanIndex · across 20 councils · 93% granted

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Documents

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

117 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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What this grant of permission means

Southwark granted permission on 1 October 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • Alpha House 100 Borough High Street London Southwark SE1

    25/AP/3745 Submitted 19 Dec 2025 0m away

    Certificate of lawful development (proposed) for the demolition of side boundary wall of site/building as part of implementation of planning application 23/AP/2641

    Granted Lawful development Demolition 8 docs
    Small domestic

  • 106-114 Borough High Street London Southwark SE1 1LB

    22/AP/3613 Submitted 18 Oct 2022 21m away

    Alterations to the brickwork/limestone cladding to east elevation, new louvered door to bin store, re-handing of existing fire exit door, alterations to existing facade.

    Granted Full applications 13 docs

  • 8 Union Street London Southwark SE1 1SZ

    25/AP/3734 Submitted 18 Dec 2025 27m away

    Replacement windows and doors throughout, and a side entrance door to provide level access via portable lifting platform.

    Granted Full applications Windows or glazing 27 docs

  • 116-118 Borough High Street London Southwark SE1 1LB

    23/AP/2991 Submitted 25 Oct 2023 39m away

    Alterations to building entrance by reducing the recessed entry space and replacing the door, fanlight, post boxes and dry riser outlet.

    Granted Full applications 16 docs

  • Marlborough Sports Garden 11 - 25 Union Street London Southwark SE1 1SD

    25/AP/3462 Submitted 27 Nov 2025 42m away

    Discharge of Condition 3 (Operational Management Plan) pursuant to 22/AP/2071 [Redevelopment of site for the construction of two storey Cafe (Use Class E.b) with ancillary facilities, erection of roof apparatus (PV panels and plant), renewal of existing game areas, provision of cycle parking and associated landscaping for outdoor games, viewing terraces and planting and associated highway works with pedestrian ramp access].

    Granted Conditions 5 docs

  • Marlborough Playground 11 -25 Union Street London Southwark SE1 1SD

    22/AP/2071 Submitted 13 Jun 2022 43m away

    Redevelopment of site for the construction of two storey Cafe (Use Class E.b) with ancillary facilities, erection of roof apparatus (PV panels and plant), renewal of existing game areas, provision of cycle parking and associated landscaping for outdoor games, viewing terraces and planting and associated highway works with pedestrian ramp access.This application is a DEPARTURE APPLICATION: The proposed development is a departure from Policy P57 (Open Space) of the Southwark Plan (2022).

    Granted Full applications 49 docs

In Southwark

  • 26/AP/1021 Refused

    Davotti Apartments 351 Rotherhithe Street London Southwark SE16 5LJ

    Construction of two additional storeys to provide 4 self-contained flats

    10 Apr 2026 Full applications
  • 26/AP/1371 Granted

    135 Merrow Street London Southwark SE17 2NX

    Providing level access from the street; refurbishment of interior spaces; replacement of the existing rear/side lean-to structure with a new infill arrangement, incorporating a new wall to the Villa Street elevation and the rear courtyard; retention and repair of existing facades including the repainted hand-painted signage; and new electrical supply and mechanical ventilation provision.

    12 May 2026 Full applications
  • 26/AP/1445 Granted

    42A Harper Road London Southwark SE1 6AD

    Retrospective application for the installation of external security shutters and a postbox

    20 May 2026 Full applications
  • 26/AP/1322 Granted

    St Francis R C Primary School Friary Road London Southwark SE15 1RQ

    Installation of 7no. new external air conditioning units.

    7 May 2026 Full applications
  • 26/AP/0780 Granted

    10 Marshalsea Road London Southwark SE1 1HL

    Amalgamation of ground and basement Class (E) with existing first, second and third floor dwelling (C3) to create enlarged dwelling and associated bike and bin stores

    18 Mar 2026 Full applications