Alpha House 100 Borough High Street London Southwark SE1

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

• 23/AP/2641 Granted

  Alpha House 100 Borough High Street London Southwark SE1

  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.

  Decided 1 Oct 2025 Full applications

1. 19 Dec 2025

   Received by Southwark

2. 22 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 21 Jan 2026

   Decision issued: Certificate of Lawfulness Prop- GRANTED

4. 10 Aug 2026

   Added to PlanIndex

• 23/AP/2641 Granted

  Alpha House 100 Borough High Street London Southwark SE1

  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.

  Decided 1 Oct 2025 Full applications

Southwark granted permission on 21 January 2026, 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• Alpha House 100 Borough High Street London Southwark SE1

  23/AP/2641 Submitted 6 Sep 2023 0m away

  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.

  Granted Full applications 117 docs
  Major scheme

• 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

• 26/AP/1316 Granted

  Seavington House Champion Hill London Southwark SE5 8DN

  Certificate of lawfulness (proposed) to confirm excavation works carried out on the site in the form of trial pits constitute a material operation under the Town and Country Planning Act 1990 and therefore represent lawful commencement of the approved planning permission 22/AP/0174.

  7 May 2026 Lawful development
• 26/AP/1420 Granted

  40 Strathnairn Street London Southwark SE1 5BL

  Certificate of lawfulness (proposed) for construction of a ground floor rear extension and a rear dormer.

  18 May 2026 Lawful development
• 26/AP/1618 Granted

  252 Barry Road London Southwark SE22 0JS

  Certificate of lawful development (proposed) for the construction of a rear dormer extension.

  5 Jun 2026 Lawful development
• 26/AP/1577 Granted

  Residence Inn By Marriott London Bridge 201-211 Long Lane London SE1 4PN

  Certificate of lawfulness (proposed) for undertaking of facade remedial works to remove combustible cladding materials and replace with a like-for-like non-combustible cladding with no change to the outer aesthetics of the building.

  2 Jun 2026 Lawful development
• 26/AP/1509 Withdrawn

  Railway Arch 101 Rockingham Street London Southwark SE1 6PD

  Certificate of lawfulness (proposed) for confirmation of implementation of planning permission 22/AP/3065: Change of use of the railway arch at 101 Rockingham Street from Use Class B8 (Storage/Distribution) to Use Classes E (Commercial, Business and Service) and F2 (Local Community) and a new glazed facade to the exterior including 2x extractor fans.

  27 May 2026 Lawful development