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Planning application

1 Summerlee Gardens London N2 9QN

Decided Barnet 25/4756/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

Single storey side return extension. Roof extension involving hip to gable with rear dormer windows with 3no. front facing rooflights

As published by the council, reference 25/4756/192

Application record

Reference
25/4756/192
Type
Proposed Lawful Development Certificate
Status
Unlawful
Decision
Unlawful
Received
28 Nov 2025
Validated
1 Dec 2025
Decided
17 Dec 2025
Ward
East Finchley
Decision by
Delegated Decision
Postcode
N2 9QN

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025.

  • 26/0028/HSE Awaiting decision

    1 Summerlee Gardens London N2 9QN

    Single storey side return extension. Roof extension involving hip to gable with rear dormer windows with 3no. front facing rooflights

    Submitted 5 Jan 2026 Householder

Timeline

Dates from the published record

  1. 28 Nov 2025

    Received by Barnet

  2. 1 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 17 Dec 2025

    Decision issued: Unlawful

  4. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice registered in Exeter

2 applications on PlanIndex

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Documents

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

22 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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After the decision

Barnet has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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 500 metres

  • 1 Summerlee Gardens London N2 9QN

    26/0028/HSE Submitted 5 Jan 2026 9m away

    77% historically approved · decision due ~3 Mar

    Single storey side return extension. Roof extension involving hip to gable with rear dormer windows with 3no. front facing rooflights

    Awaiting decision Householder Extension Loft or dormer +1 22 docs
    Small domestic
  • 55 Summerlee Avenue London N2 9QJ

    26/1048/HSE Submitted 18 Mar 2026 23m away

    Single storey rear extension with 2no. roof lanterns

    Granted Householder Extension 5 docs
    Small domestic
  • 55 Summerlee Avenue London N2 9QJ

    26/1649/HSE Submitted 1 May 2026 23m away

    77% historically approved · decision due ~30 Jun

    Single storey rear extension with 2no. roof lanterns. Alterations to the existing patio area. Replacement of existing side store and insertion of 1no. rooflight

    Awaiting decision Householder Extension Loft or dormer 5 docs
    Small domestic
  • 74 Summerlee Avenue London N2 9QH

    26/0288/192 Submitted 26 Jan 2026 86m away

    Erection of a garden studio following demolition of the existing garage

    Decided Lawful development Demolition 7 docs
  • 49 Baronsmere Road London N2 9QG

    25/4030/HSE Submitted 6 Oct 2025 100m away

    77% historically approved · decision due ~1 Dec

    Single storey side/rear extension

    Awaiting decision Householder Extension 3 docs
    Small domestic
  • 49 Baronsmere Road London N2 9QG

    26/0310/CON Submitted 27 Jan 2026 100m away

    95% historically approved · decision due ~24 Mar

    Submission of details of conditions 5 (Tree protection plan) 6 (Foundation details) pursuant to planning permission 25/4030/HSE dated 02/12/2025

    Awaiting decision Conditions Trees 6 docs

In Barnet

  • 26/2679/192 Decided

    21 Myddelton Park London N20 0JH

    Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

    20 Jul 2026 Lawful development
  • 26/1907/191 Decided

    8 Golders Manor Drive London NW11 9HT

    Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

    21 May 2026 Lawful development
  • 26/2059/192 Decided

    Low Ridge Rowley Lane Barnet EN5 3HS

    Erection of a rear outbuilding

    3 Jun 2026 Lawful development
  • 26/2066/192 Decided

    355 Hendon Way London NW4 3NB

    Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

    3 Jun 2026 Lawful development
  • 26/1663/192 Decided

    152 Deans Lane Edgware HA8 9NT

    Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

    5 May 2026 Lawful development