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Planning application

23 Alberta Street London Southwark SE17 3SF

Awaiting decision Southwark 26/AP/2574 Certificate of Lawful Dev. - Proposed

Works: Loft or dormer

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

Proposal

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

As published by the council, reference 26/AP/2574

Application record

Reference
26/AP/2574
Type
Certificate of Lawful Dev. - Proposed
Status
Under consideration/assessment
Received
1 Sep 2026
Validated
8 Sep 2026
Ward
Newington
Parish
Borough, Bankside And Walworth
Postcode
SE17 3SF

Site history

Applications at this address on the Southwark register

This site has had 2 applications since 2022: 1 approved, 0 refused.

  • 22/AP/0196 Granted

    23 Alberta Street London Southwark SE17 3SF

    Certificate of lawfulness (proposed) for the construction of a new front porch, single storey rear extension and rear dormer extension, and the installation of three rooflights on the front roof slope and two rooflights on the rear roof slope.

    Decided 11 Mar 2022 Lawful development

Timeline

Dates from the published record

  1. 1 Sep 2026

    Received by Southwark

  2. 8 Sep 2026

    Validated

    Checked as complete and ready for consideration.

  3. 8 Sep 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 3 November 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

Larissa Johnston Architects Agent, an architecture practice registered in London

Active · incorporated 2015 · London

4 applications on PlanIndex · across 2 councils

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

12 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.

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

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 lawful development applications in a median of 50 days. More in our guide to how long planning decisions take.

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

  • 23 Alberta Street London Southwark SE17 3SF

    22/AP/0196 Submitted 25 Jan 2022 50 yards away

    Certificate of lawfulness (proposed) for the construction of a new front porch, single storey rear extension and rear dormer extension, and the installation of three rooflights on the front roof slope and two rooflights on the rear roof slope.

    Granted Lawful development Extension Loft or dormer 14 docs
    Small domestic
  • Unit 3 4 Canterbury Place London Southwark SE17 3AG

    26/AP/0900 Submitted 27 Mar 2026 100 yards away

    Alterations and creation of new shop front and installation of doors to the side elevation.

    Granted Full applications Windows or glazing 11 docs
  • 110 Ambergate Street London Southwark SE17 3SA

    25/AP/3421 Submitted 24 Nov 2025 100 yards away

    Construction of a timber single-storey rear ground-floor extension with a sedum green roof; installation of two new rear dormer extensions at first- and second-floor levels; installation of rooflights to the front roof slope; replacement of all windows and minor internal reconfiguration works.

    Granted Householder Extension Loft or dormer +1 27 docs
    Small domestic
  • 57 Kennington Park Road London Southwark SE11 4JQ

    22/AP/0262 Submitted 28 Jan 2022 150 yards away

    1 x Lime - Reduce Overall Size Of Crown By 3m to previous points, retaining knuckles.

    Granted Trees 6 docs
  • 21 Ambergate Street London Southwark SE17 3RY

    21/AP/3555 Submitted 12 Oct 2021 150 yards away

    Construction of single storey rear wrap around extension with a maximum height of 3m to west elevation.

    Granted Full applications Extension 20 docs
    Small domestic
  • 21 Ambergate Street London Southwark SE17 3RY

    22/AP/1451 Submitted 25 Apr 2022 150 yards away

    Non material amendment to planning permission 21/AP/3555 (Construction of single storey rear wrap around extension with a maximum height of 3m to west elevation) to install 3 no. new high level obscured windows to the north western side elevation and for the approved flat roof skylight to be enlarged.

    Decided Conditions Extension Windows or glazing 23 docs
    Small domestic

In Southwark

  • 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
  • 26/AP/1759 Granted

    29 Dundas Road London Southwark SE15 2DR

    Certificate of Lawful Development (Proposed) for loft conversion with rear dormer, installation of roof lights to front roof slope, construction of a rear outbuilding, fenestration changes including new and replacement windows and installation of soil vent pipe.

    Received 17 Jun, published by the council 25 Jul 2026 Lawful development