29 Monks Avenue Barnet EN5 1BZ

1. 17 Feb 2026

   Received by Barnet

2. 5 Mar 2026

   Decision issued: Lawful

3. 10 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

• 29 Monks Avenue Barnet EN5 1BZ

  26/1299/HSE Submitted 8 Apr 2026 0m away

  77% historically approved · decision due ~3 Jun

  Single storey side and rear infill extension including new front porch following demolition of the side/rear storage. Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch Demolition of the side/rear storage and erection of a single storey infill rear and side extension including the front porch

  Awaiting decision Householder Extension Demolition 9 docs
  Small domestic

• 17 Lyonsdown Avenue Barnet EN5 1DU

  26/2929/HSE Submitted 7 Aug 2026 122m away

  77% historically approved · decision due ~5 Oct

  Single storey front/side extension following demolition of the existing garage and the insertion of 1No front window (AMENDED DESCRIPTION)

  Awaiting decision Householder Extension Demolition +1
  Small domestic

• 41 Lyonsdown Avenue Barnet EN5 1DX

  26/1423/HSE Submitted 17 Apr 2026 182m away

  Single storey rear extension with new lowered patio area and associated access steps. New hard and soft landscaping. Conversion of the existing garage into habitable room, insertion of window to replace garage door

  Refused Householder Extension Windows or glazing 16 docs
  Small domestic

• 41 Lyonsdown Avenue Barnet EN5 1DX

  25/5008/HSE Submitted 15 Dec 2025 182m away

  77% historically approved · decision due ~9 Feb

  Single storey rear extension with new raised patio area and associated access steps

  Awaiting decision Householder Extension 13 docs
  Small domestic

• Flats A, B And C 24 Netherlands Road Barnet EN5 1BW

  25/3804/S73 Submitted 16 Sep 2025 197m away

  95% historically approved · decision due ~11 Nov

  Variation of condition 2 (Approved Plans) pursuant to planning appeal APP/N5090/W/25/3362709 dated 17.06.2025 Planning ref 24/4921/FUL for `Erection of a rear outbuilding. Associated changes to landscaping, boundary treatments and the onsite parking' Variation to include alterations to the roof form over the approved outbuilding, to facilitate an alternative design, now showing a crown style roof

  Awaiting decision Conditions 17 docs

• 59 Lyonsdown Avenue Barnet EN5 1DX

  26/2575/HSE Submitted 8 Jul 2026 226m away

  77% historically approved · decision due ~7 Sep

  Single storey side extension to provide bike store. Addition of a canopy above side door. New timber gates to side. Roof extension involving 1no. new dormer window to rear elevation. Insertion of 2no. circular windows to rear elevation. Alterations to front garden including changes to existing driveway and widening of vehicular access, and new steps. New raised patio to rear with associated steps to garden. New brick garden wall to rear. Replacement of existing windows with triple glazed timber windows

  Awaiting decision Householder Extension Loft or dormer +1
  Small domestic

• 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
• 26/2025/192 Decided

  18 Hale Drive London NW7 3DU

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  1 Jun 2026 Lawful development