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Planning application

11-13 & 19 Throgmorton Avenue, 21 Austin Friars And 23 Great Winchester Street London EC2N 2HE

Granted City of London 26/01147/NMA Amendments

Works: Windows or glazing

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

Proposal

Application for a non-material amendment under Section 96A of the Town and Country Planning Act 1990 (as amended) to planning permission reference 4931B (dated 16 April 1987) for the removal of the condition restricting the building over of the atrium void area other than by a glazed roof.

As published by the council, reference 26/01147/NMA

Application record

Reference
26/01147/NMA
Category
Amendments
Status
Decided
Decision
Granted As published: Approved
Received
10 Aug 2026
Validated
10 Aug 2026
Decided
29 Sep 2026
Ward
Broad Street
Decision by
Delegated
Postcode
EC2N 2HE

Site history

Applications at this address on the City of London register

This site has had 3 applications since 2026: 3 approved, 0 refused.

  • 26/01386/CLOPD Granted

    11-13 & 19 Throgmorton Avenue, 21 Austin Friars And 23 Great Winchester Street London EC2N 2HE

    Application for a Lawful Development Certificate for internal refurbishment works including partial infill of the existing central atrium at Levels 01, 02, 03, 04, 05 and 06.

    Decided 21 Oct 2026
  • 26/01150/NMA Granted

    11-13 & 19 Throgmorton Avenue, 21 Austin Friars And 23 Great Winchester Street London EC2N 2HE

    Application for a non-material amendment under Section 96A of the Town and Country Planning Act 1990 (as amended) to planning permission reference 4931A (dated 21 April 1986) for the removal of condition 3 restricting the building over of the atrium void area other than by a glazed roof.

    Decided 29 Sep 2026 Amendments

Timeline

Dates from the published record

  1. 10 Aug 2026

    Received by City of London

  2. 28 Aug 2026

    Added to PlanIndex

  3. 29 Sep 2026

    Decision issued: Approved

  4. 29 Sep 2026

    Status changed to Decided

    Previously Under Consideration.

Documents

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

4 documents on file for this application

  • APPLICATIONFORMREDACTED Application Form · 10 Aug 2026
  • 26005_GARDEN HOUSE - SITE PLAN Site Plan · 10 Aug 2026
  • GARDEN HOUSE - NMA 4931B - COVER LETTER Cover Letter · 10 Aug 2026
  • PLANNING STATEMENT_INCLUDED_IN_COVERING LETTER Report - Planning Statement/Report · 10 Aug 2026

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

City of London granted permission on 29 September 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.

About amendment applications

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 15 Austin Friars London EC2N 2HE

    26/00377/MDC Submitted 16 Mar 2026 50 yards away

    Submission of details of acoustic report pursuant to condition 2(b) of Planning permission 25/00369/FULL dated 09.05.2025.

    Granted 2 docs
  • 11-13 & 19 Throgmorton Avenue, 21 Austin Friars And 23 Great Winchester Street London EC2N 2HE

    26/01150/NMA Submitted 11 Aug 2026 50 yards away

    Application for a non-material amendment under Section 96A of the Town and Country Planning Act 1990 (as amended) to planning permission reference 4931A (dated 21 April 1986) for the removal of condition 3 restricting the building over of the atrium void area other than by a glazed roof.

    Granted Amendments Windows or glazing 4 docs
  • 11-13 & 19 Throgmorton Avenue, 21 Austin Friars And 23 Great Winchester Street London EC2N 2HE

    26/01386/CLOPD Submitted 1 Oct 2026 50 yards away

    Application for a Lawful Development Certificate for internal refurbishment works including partial infill of the existing central atrium at Levels 01, 02, 03, 04, 05 and 06.

    Granted Extension 26 docs
  • 15 Austin Friars London EC2N 2HE

    25/00369/FULL Submitted 14 Mar 2025 50 yards away

    Installation of louvre panels in place of two existing windows to the south and west elevations at lower ground floor level to provide air supply to two new mechanical units located within the building.

    Granted Full applications Windows or glazing 11 docs
  • 14 Austin Friars London EC2N 2HE

    25/01126/5REG Submitted 14 Aug 2025 50 yards away

    Notification under Regulation 5 of the Electronic Communications Code (Conditions and Restrictions) Regulations 2023 (as amended) to install fixed line broadband electronic communications apparatus detailed as ONEA79194063 (Install approx. 50m of 4BFB internal in existing 2/5mm MK3-PVC-200:ON:2703:VAFA/BAA:(A) between VAFA/BAA-VAFA/2C and Run 10m COF8002 cable internal between VAFA/2C-VAFA/2D and Provide 5m Pigtails to NTE)

    Granted 4 docs
  • 15 Austin Friars London EC2N 2HE

    21/00672/NMA Submitted 4 Aug 2021 50 yards away

    Non-material amendment under Section 96A of the Town and Country Planning Act 1990 (as amended) to planning permission 17/00816/FULL dated 19th December 2017 to allow the omission of an internal staircase between the lower ground floor and ground floor.

    Granted Amendments 9 docs

In City of London

  • 26/01017/NMA Granted

    Millennium Bridge House 2 Lambeth Hill London EC4V 4AG

    Non-material amendment under Section 96a of the Town and Country Planning Act 1990 to planning permission 22/00970/FULMAJ dated 05 September 2024; namely; enlarged louvre bank, relocated access door, and alterations to riser access, all to High Timber Street elevation.

    Received 17 Jul, published by the council 9 Aug 2026 Amendments
  • 26/01355/NMA Granted

    St Paul's House 8 - 12 Warwick Lane London EC4M 7BP

    Non-Material Amendment under Section 96a of the Town and Country Planning Act (1990) (as amended) to planning permission Ref. 25/01203/FULL dated 13 February 2026 in relation to condition 6 (part c) (design details) and condition 15 (approved plans) to alter the balustrade design at the level 6.

    Received 28 Sep, published by the council 7 Oct 2026 Amendments
  • 26/01071/NMA Granted

    81 Newgate Street London EC1A 7HQ

    Non-Material Amendment under Section 96a of the Town and Country Planning Act (1990) (as amended) to planning permission Ref. 23/00752/FULMAJ (as amended) dated 12 September 2023 to amend condition 57 (approved plans) to allow for the installation of 1no. terrace access door at level 11 and 6no. service penetrations within the existing louvred façade panel on the west elevation.

    Received 28 Jul, published by the council 28 Aug 2026 Amendments
  • 26/01463/NMA Awaiting decision

    90 Liverpool Street London EC2M 2AT

    Application for non-material amendments under S96A of the Town and Country Planning Act 1990 (as amended) to amend Condition 2 (Tables and chairs removal), pursuant to planning permission ref. 26/00292/FULL (dated 29.09.2026) for external seating area to be vacated and not in use from 2230hrs to 0900hrs daily and the furniture to be brought inside for storage once principal leisure venue closes at 0130hrs.

    Received 15 Oct, published by the council 23 Oct 2026 Amendments
  • 26/00861/NMA Granted

    Thavies Inn House 3 - 4 Holborn Circus London EC1N 2HA

    Application for non-material amendment under S96A of the Town and Country Planning Act 1990 (as amended) to amend condition 53 (Approved drawings) of planning permission no. 24/00688/FULL to make the following amendments: 1. Adjustment of the south boundary wall by approximately 400mm to the south 2. Relocate the UKPN substation from the basement to the ground floor, with associated reconfiguration of back-of-house accommodation, servicing, cycle parking and reception areas 3. Make minor amendments to the external elevations and pedestrian alleyways, including revisions to facade treatments, entrances, louvres, access doors, balustrades and associated architectural detailing. 4. Amend the roof terrace and plant enclosure design, including updates to balustrades, screening, louvres and plant structures, together with an increase in photovoltaic panel provision from approximately 170 sqm to 300 sqmn and amend the wording of Condition 39 (combustion flues).

    Received 15 Jun, published by the council 24 Jul 2026 Amendments