81 Avondale Avenue Barnet EN4 8NA

1. 29 Apr 2026

   Received by Barnet

2. 30 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 May 2026

   Decision issued: Lawful

4. 25 Jul 2026

   Added to PlanIndex

Barnet granted permission on 11 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• 89 Avondale Avenue Barnet EN4 8NA

  25/5135/HSE Submitted 22 Dec 2025 32m away

  77% historically approved · decision due ~16 Feb

  Part single, part two storey side and rear extension. New front porch

  Awaiting decision Householder Extension 9 docs
  Small domestic

• 25 Grange Avenue Barnet EN4 8NJ

  26/1780/HSE Submitted 12 May 2026 84m away

  77% historically approved · decision due ~7 Jul

  Part single, part two storey side and rear extensions with pitched roof, 2no. rooflights and new access steps to garden level

  Awaiting decision Householder Extension Loft or dormer 6 docs
  Domestic

• 54 Derwent Avenue Barnet EN4 8LZ

  26/2191/192 Submitted 12 Jun 2026 95m away

  79% historically approved · decision due ~7 Aug

  Roof extension involving rear dormer window with juliette balcony

  Awaiting decision Extension Loft or dormer +1

• 25 Grange Avenue Barnet EN4 8NJ

  26/3309/HSE Submitted 10 Sep 2026 98m away

  77% historically approved · decision due ~5 Nov

  Part lower ground, part single storey and part two storey side and rear extensions incorporating a pitched roof and two rooflights, together with the formation of a raised patio and access steps to the lower garden level

  Awaiting decision Householder Extension Loft or dormer
  Small domestic

• 73 Derwent Avenue Barnet EN4 8LY

  26/0885/HSE Submitted 9 Mar 2026 111m away

  Single storey side extension and alterations to existing rear extension including raising of the roof height (AMENDED DESCRIPTION)

  Granted Householder Extension 6 docs
  Small domestic

• 42 Gallants Farm Road Barnet EN4 8ES

  25/4163/S73 Submitted 17 Oct 2025 146m away

  Variation of condition 1 (Approved Plans) of planning permission reference 24/2138/HSE dated 30/08/24 for 'Single storey side and rear extension with 4no rooflights, following demolition of the existing outrigger and shed.' Variation to include increasing the side extension by 1.2 metres to the front

  Granted Conditions Extension Loft or dormer +1 10 docs
  Small domestic

• 26/2679/192 Granted

  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 Granted

  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 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

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

  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
• 26/2525/192 Granted

  39 Ridgeway Avenue Barnet EN4 8TN

  Single storey rear extension

  6 Jul 2026 Lawful development