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Planning application

21 Sansom Street London Southwark SE5 7RD

Granted Southwark 21/AP/0091 Certificate of Lawful Dev. - Proposed

Works: Extension Loft or dormer

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

Proposal

Certificate of lawfulness (proposed) for construction of a rear dormer extension with the addition of two roof lights to the front roof slope.

As published by the council, reference 21/AP/0091

Application record

Reference
21/AP/0091
Type
Certificate of Lawful Dev. - Proposed
Status
Granted
Decision
Granted As published: Certificate of Lawfulness Prop- GRANTED
Received
11 Jan 2021
Validated
12 Jan 2021
Decided
21 Feb 2021
Ward
St Giles
Decision by
Delegated Panel - Trees
Postcode
SE5 7RD

Timeline

Dates from the published record

  1. 11 Jan 2021

    Received by Southwark

  2. 12 Jan 2021

    Validated

    Checked as complete and ready for consideration.

  3. 21 Feb 2021

    Decision issued: Certificate of Lawfulness Prop- GRANTED

  4. 4 Aug 2026

    Added to PlanIndex

Documents

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

23 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 21 February 2021, 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 lawful development applications

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.

Nearby applications

Within 0.3 miles

  • 39 Sansom Street London Southwark SE5 7RD

    26/AP/2412 Submitted 12 Aug 2026 50 yards away

    Construction of an L-shaped rear dormer extension, three rooflights to the front roof slope, a 400mm ridge height increase, and an increase in the existing chimney height.

    Granted Extension Loft or dormer +1

  • 11 Sansom Street London Southwark SE5 7RD

    22/AP/2435 Submitted 7 Jul 2022 50 yards away

    Non-Material amendment required by planning permission 15/AP/2941 Erection of a single storey ground floor side extension and a rear dormer

    Decided Conditions Extension Loft or dormer 5 docs
    Small domestic

  • 35 Sansom Street London Southwark SE5 7RD

    22/AP/3431 Submitted 3 Oct 2022 50 yards away

    Certificate of Lawfulness (proposed) formation of rear dormer and insertion of two roof lights to the front elevation

    Granted Lawful development Loft or dormer 7 docs

  • 130 Benhill Road London Southwark SE5 7LZ

    20/AP/3826 Submitted 24 Dec 2020 50 yards away

    Replacement of the existing rear lean-to extension with a single storey side-rear extension; the construction of a roof extension and the raising of the existing chimney and parapet walls; and the replacement of the existing first floor window within the rear outrigger.

    Granted Householder Extension Windows or glazing 15 docs
    Small domestic

  • 128 Benhill Road London Southwark SE5 7LZ

    22/AP/2859 Submitted 12 Aug 2022 50 yards away

    Construction of a ground floor rear extension and a second floor mansard roof extension. New rooflight to first floor outrigger.

    Granted Householder Extension Loft or dormer 36 docs
    Domestic

  • 138 Benhill Road London Southwark SE5 7LZ

    22/AP/0457 Submitted 16 Feb 2022 50 yards away

    Construction of a side-rear extension; the construction of a mansard roof extension and the raising of the existing chimney and parapet walls; and the installation of 2x rooflights to the front roofslope.

    Granted Householder Extension Loft or dormer 41 docs
    Domestic

In Southwark

  • 26/AP/2574 Awaiting decision

    23 Alberta Street London Southwark SE17 3SF

    Certificate of lawfulness (proposed) for construction of a rear dormer and the installation of 1x rooflight to the front roofslope.

    Received 1 Sep, published by the council 8 Sep 2026 Lawful development
  • 26/AP/2509 Awaiting decision

    Newington Gardens Harper Road London Southwark SE1

    Certificate of Lawfulness (proposed) for improvement works to the playground at Newington Gardens to include the removal of current playground equipment and installation of new accessible equipment.

    Received 21 Aug, published by the council 7 Sep 2026 Lawful development
  • 26/AP/1673 Granted

    Flat 67 Benbow House 24 New Globe Walk London Southwark SE1 9DS

    Certificate of Lawful Development to replace existing external doors with new thermally improved doors

    Received 11 Jun, published by the council 25 Jul 2026 Lawful development
  • 26/AP/1909 Granted

    6 Ethnard Road London Southwark SE15 1RU

    Certificate of lawfulness (proposed) for a loft conversion with rear dormer

    Received 30 Jun, published by the council 25 Jul 2026 Lawful development
  • 26/AP/2486 Awaiting decision

    84 Croxted Road London Southwark SE21 8NP

    Certificate of lawfulness (proposed) for the formation of a moveable structure (as defined under the Caravan Site Act) that can be separated into 2 sections and removed from the rear garden by crane. Refer to the following drawings: 318 SP 00 (PD) 318 SP 01 (PD) 318 SP 101 (PD) 318 GS 01 (PD) 318 GS 02 (PD)

    Received 19 Aug, published by the council 20 Aug 2026 Lawful development