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Planning application

9 Temple Avenue London N20 9EJ

Decided Barnet 25/4718/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Demolition Windows or glazing

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

Proposal

Roof extension with side dormer,rear dormer window with juliette balcony and 1no. front facing rooflight and solar panels to side roof slope. Following demolition of 2 no. chimneys to the rear.

As published by the council, reference 25/4718/192

Application record

Reference
25/4718/192
Type
Proposed Lawful Development Certificate
Status
Lawful
Decision
Lawful
Received
25 Nov 2025
Validated
27 Nov 2025
Decided
8 Dec 2025
Ward
Whetstone
Decision by
Delegated Decision
Postcode
N20 9EJ

Site history

Applications at this address on the Barnet register

This site has had 5 applications since 2025: 2 approved, 0 refused.

  • 26/0851/HSE Granted

    9 Temple Avenue London N20 9EJ

    Two storey side extension following demolition of existing single storey side projection. Single storey rear extension following demolition of existing conservatory. New raised patio and associated steps to garden. New front porch. Roof extension involving side and rear dormer windows, 1no. front facing rooflight and solar panels to side roof slope following demolition of 2no. chimneys to the rear

    Decided 14 Apr 2026 Householder
  • 25/4116/HSE Granted

    9 Temple Avenue London N20 9EJ

    Two storey side extension following demolition of existing single storey side projection. Single storey rear extension following demolition of existing conservatory. New raised patio and associated steps to garden. New front porch

    Decided 17 Nov 2025 Householder
  • 25/3571/192 Decided

    9 Temple Avenue London N20 9EJ

    Single storey rear extension following demolition of the existing conservatory and patio

    Decided 3 Oct 2025 Lawful development
  • 25/3348/192 Decided

    9 Temple Avenue London N20 9EJ

    Single storey rear extension following the demolition of existing conservatory and patio

    Decided 18 Aug 2025 Lawful development

Timeline

Dates from the published record

  1. 25 Nov 2025

    Received by Barnet

  2. 27 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 8 Dec 2025

    Decision issued: Lawful

  4. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Agent on file, a design practice

52 applications on PlanIndex · across 6 councils · 84% granted

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Documents

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

11 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

  • 9 Temple Avenue London N20 9EJ

    25/3348/192 Submitted 11 Aug 2025 0m away

    Single storey rear extension following the demolition of existing conservatory and patio

    Decided Lawful development Extension Demolition 7 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    26/0851/HSE Submitted 6 Mar 2026 4m away

    Two storey side extension following demolition of existing single storey side projection. Single storey rear extension following demolition of existing conservatory. New raised patio and associated steps to garden. New front porch. Roof extension involving side and rear dormer windows, 1no. front facing rooflight and solar panels to side roof slope following demolition of 2no. chimneys to the rear

    Granted Householder Extension Loft or dormer +2 12 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    25/4116/HSE Submitted 13 Oct 2025 4m away

    Two storey side extension following demolition of existing single storey side projection. Single storey rear extension following demolition of existing conservatory. New raised patio and associated steps to garden. New front porch

    Granted Householder Extension Demolition 10 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    25/3571/192 Submitted 28 Aug 2025 5m away

    Single storey rear extension following demolition of the existing conservatory and patio

    Decided Lawful development Extension Demolition 7 docs
    Small domestic

  • 35 Buckingham Avenue London N20 9DG

    26/1735/HSE Submitted 8 May 2026 68m away

    77% historically approved · decision due ~8 Jul

    Single storey rear extension with new raised patio area with associated access steps and landscaping. Conversion of the existing garage into habitable room, insertion of window and door to replace the garage door. Roof extension involving rear dormer window and skylights. Replacement of existing windows. External wall insulation

    Awaiting decision Householder Extension Loft or dormer +1 6 docs
    Small domestic

  • 20 Langton Avenue London N20 9DB

    25/4435/HSE Submitted 6 Nov 2025 81m away

    Single storey rear extension following demolition of the existing conservatory with 1no. flat rooflight

    Granted Householder Extension Loft or dormer +1 8 docs
    Domestic

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