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Planning application

21/1401/CP

3 IRWIN AVENUE, PLUMSTEAD, LONDON, SE18 2HP

Granted Greenwich Lawful use (operation)

Proposal

Certificate of Lawfulness (Proposed)is sought for roof extension, involving hip to gable, rear dormer window, new side gable windows and 3no front facing roof-lights.

As published by the council, reference 21/1401/CP

Timeline

Dates from the published record

  1. 14 Apr 2021

    Received by Greenwich

  2. 9 Jun 2021

    Decision issued: Approve

  3. 26 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 21/1514/PN1 Refused

    30 THORNHILL AVENUE, PLUMSTEAD, LONDON, SE18 2HS

    Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 5.00 metres, for which the maximum height will be 3.00 metres and the height at the eaves will be 2.80 metres.

    26 Apr 2021 81m away Prior approval
  • 26/1371/CP Granted

    102 SWINGATE LANE, PLUMSTEAD, LONDON, SE18 2HL

    Certificate of Lawfulness (Proposed) is sought for single-storey rear extension, demolition of the existing infill extension, and construction of a new single-storey infill extension, L-shaped dormer extension with front roof lights.

    5 May 2026 121m away Lawful development
  • 26/1298/PN1 Granted

    102 SWINGATE LANE, PLUMSTEAD, LONDON, SE18 2HL

    Prior Approval for the construction of a single storey rear extension which will extend beyond the rear wall of the original dwelling by 6.00m, for which the maximum height will be 2.9m and the height at the eaves will be 2.9m and demolition of the existing infill extension and reconstruction of a single storey infill extension measuring 3.144m in depth, 2.9m in height and 2.9m to the eaves (Amended description. Re-consultation).

    27 Apr 2026 121m away Prior approval
  • 26/1688/SD Awaiting decision

    124 SWINGATE LANE, LONDON, SE18 2HL

    Submission of details pursuant to discharge condition 3 (Waste and recycling provision), condition 4 (Cycle parking spaces) and condition 5 (Operational Management Plan) of planning permission reference 26/0123/F dated 09/03/2026.

    5 Jun 2026 121m away Conditions
  • 26/0874/F Awaiting decision

    102 SWINGATE LANE, PLUMSTEAD, LONDON, SE18 2HL

    Change of use from single family dwelling house (Class C3) to a six bedroom HMO with a maximum capacity of six persons (Class C4) including single-storey rear extension, part demolition of the existing infill extension, L-shaped dormer extension with front roof lights and associated provision of refuse and cycle storage

    18 Mar 2026 121m away Full applications
  • 21/1145/F Refused

    112 TIMBERCROFT LANE, PLUMSTEAD, LONDON, SE18 2SG

    Erection of outbuilding for additional storage for existing shop.

    29 Mar 2021 142m away Full applications

In Greenwich

  • 26/2269/CE Awaiting decision

    51 BANNOCKBURN ROAD, PLUMSTEAD, LONDON, SE18 1ET

    Certificate of Lawfulness (Existing) is sought for HMO with five ensuite rooms with shared kitchen, arranged over ground, first & second floors. This use has been in operation and licensed since at least 2018.

    29 Jul 2026 Lawful development
  • 26/2258/CP Awaiting decision

    4 WELTON ROAD, PLUMSTEAD, LONDON, SE18 2JF

    Certificate of Lawfulness (Proposed) is sought for proposed outbuilding - Summer House.

    29 Jul 2026 Lawful development
  • 26/1580/CP Withdrawn

    8 PARK ROW, GREENWICH, LONDON, SE10 9NG

    Certificate of Lawfulness (Proposed) is sought for garden room to the rear of the garden.

    26 May 2026 Lawful development
  • 26/1630/CE Granted

    28 CHELSWORTH DRIVE, PLUMSTEAD, LONDON, SE18 2RA

    Certificate of Lawfulness (Existing) is sought for the change of use from existing dwellinghouse (Class C3) to a supported living accommodation for up to four (4) young people aged 16-17 (Class C2).

    1 Jun 2026 Lawful development
  • 26/2250/CE Awaiting decision

    ANNEXE AT, 12 HIGHMEAD, SE18 2DJ

    Certificate of Lawfulness (Existing) is sought for continued use as an independent dwellinghouse.

    28 Jul 2026 Lawful development