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Planning application

26/1956/192

49 Michleham Down London N12 7JJ

Awaiting decision Barnet Proposed Lawful Development Certificate

Proposal

Roof extension involving rear dormer window with juliette balcony, 4no. front facing rooflights and new side gable window

As published by the council, reference 26/1956/192

Timeline

Dates from the published record

  1. 26 May 2026

    Received by Barnet

  2. 25 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

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

  • 26/1953/HSE Awaiting decision

    49 Michleham Down London N12 7JJ

    Single storey rear extension. Changes to fenestration

    26 May 2026 1m away Householder
  • 26/0973/HSE Granted

    3 Rodmell Slope London N12 7BX

    Single storey side and rear extension following demolition of the existing garage. Alterations to the existing patio area. New front porch. Insertion of solar panels to roof. Alterations to the existing driveway including new front hardstanding to provide additional parking space

    16 Mar 2026 363m away Householder
  • 26/0983/HSE Awaiting decision

    71 Southover London N12 7HG

    Conversion of garage into habitable room including insertion of windows to replace existing garage doors and addition of new pitched roof with rooflight. Two storey side extension following demolition of existing store. Roof extension including 1no. side dormer window, 1no. rear dormer window and 2no. front facing rooflights and increase in ridge height. Installation of solar panels. Alterations to ground floor rear projection including changes to fenestration and insertion of rooflights to flat roof. Addition of 1no. AC condenser unit and 1no. Air Source Heat Pump to side elevation. Removal of chimneys

    16 Mar 2026 411m away Householder
  • 26/1471/HSE Awaiting decision

    48 Lullington Garth London N12 7BY

    Erection of a new garage with with arch roof and steps down with associated raised platform to garden following demolition of the existing garage Alterations and extension to existing raised rear patio area and acess steps. New privacy screens. Undercroft storage

    21 Apr 2026 444m away Householder
  • 26/1028/S73 Granted

    11 Singleton Scarp London N12 7AR

    Variation of condition 1 (Approved plans) of planning permission 25/1669/HSE dated 06/06/2025 for Single storey side and rear extension with 4no. flat rooflights following demolition of the existing shed, garage and conservatory. New front access steps and front door. Variation to include widening the single storey side and rear extension

    18 Mar 2026 481m away Conditions

In Barnet

  • 26/2836/192 Awaiting decision

    20 Derwent Avenue Barnet EN4 8LX

    Roof extension involving rear dormer window with juliette balcony

    31 Jul 2026 Lawful development
  • 26/2815/192 Awaiting decision

    18 Boyne Avenue London NW4 2JN

    Roof extension involving rear dormer window and 2no. front facing rooflights

    30 Jul 2026 Lawful development
  • 26/2824/192 Awaiting decision

    41 Greenway Close London N20 8ES

    Erection of a rear outbuilding

    30 Jul 2026 Lawful development
  • 26/2809/192 Awaiting decision

    43A Clifford Road Barnet EN5 5PD

    Single storey rear extension following the demolition of existing canopy

    29 Jul 2026 Lawful development
  • 26/2806/192 Awaiting decision

    14 Lincoln Road London N2 9DL

    Roof extension involving 1no. rear dormer window over main roof with juliette balcony and 1no. rear dormer over outrigger roof and 3no. front facing rooflights. Alterations to existing lean-to to form rear extension with flat roof with parapet walls and 1no. skylight. Alterations to fenestration and doors

    29 Jul 2026 Lawful development