78 Lyonsdown Road Barnet EN5 1JL

This site has had 3 applications since 2025: 1 approved, 0 refused.

• 26/1164/HSE Granted

  78 Lyonsdown Road Barnet EN5 1JL

  Single storey side and rear extension. Front porch extension. Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window

  Decided 18 May 2026 Householder
• 25/5114/192 Awaiting decision

  78 Lyonsdown Road Barnet EN5 1JL

  Removal and alteration of existing roof above existing two storey side. (Phase 1) Roof extension involving hip to gable, rear dormer with juliette balcony, 3no. front facing rooflights and new side gable window. (Phase 2)

  Submitted 19 Dec 2025 Lawful development

1. 6 Oct 2026

   Received by Barnet

2. 7 Oct 2026

   Validated

   Checked as complete and ready for consideration.

3. 7 Oct 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 2 December 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Barnet took a median of 46 days over the applications it decided in the last year.

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 82 Lyonsdown Road Barnet EN5 1JL

  26/3746/192 Submitted 16 Oct 2026 50 yards away

  79% historically approved · decision due ~11 Dec

  Construction of a new flat roof following removal of an existing left hand side pitched roof (Stage 1). Alterations and extensions to roof including two partial hip to gables and rear dormer roof extensions and 3no. front facing roof lights (Stage 2).

  Awaiting decision Extension Loft or dormer

• 78 Lyonsdown Road Barnet EN5 1JL

  26/1164/HSE Submitted 26 Mar 2026 50 yards away

  Single storey side and rear extension. Front porch extension. Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window

  Granted Householder Extension Loft or dormer +1 14 docs
  Small domestic

• 78 Lyonsdown Road Barnet EN5 1JL

  25/5114/192 Submitted 19 Dec 2025 50 yards away

  80% historically approved · decision due ~13 Feb

  Removal and alteration of existing roof above existing two storey side. (Phase 1) Roof extension involving hip to gable, rear dormer with juliette balcony, 3no. front facing rooflights and new side gable window. (Phase 2)

  Awaiting decision Lawful development Extension Loft or dormer +1 12 docs

• 80 Lyonsdown Road Barnet EN5 1JL

  25/5100/HSE Submitted 18 Dec 2025 50 yards away

  77% historically approved · decision due ~13 Feb

  New front hardstanding and vehicular access to provide off-street parking. New front hard and soft landscaping and brick fence wall

  Awaiting decision Householder 7 docs
  Small domestic

• 80 Lyonsdown Road Barnet EN5 1JL

  25/3389/HSE Submitted 13 Aug 2025 50 yards away

  Single storey rear extension. Two storey side infill extension. New front porch. Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Changes to fenestration

  Granted Householder Extension Loft or dormer +1 14 docs
  Small domestic

• 80 Lyonsdown Road Barnet EN5 1JL

  25/4882/HSE Submitted 5 Dec 2025 50 yards away

  Single storey rear extension. Two storey side infill extension. New front porch. Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Changes to fenestration.

  Granted Householder Extension Loft or dormer +1 14 docs
  Small domestic

• 26/3827/HSE Awaiting decision

  43 Hermitage Lane London NW2 2HE

  Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

  22 Oct 2026 Householder
• 26/3833/HSE Awaiting decision

  47 Holne Chase London N2 0QG

  Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

  22 Oct 2026 Householder
• 26/3815/HSE Awaiting decision

  17 Hurstwood Road London NW11 0AS

  Single storey rear extension

  21 Oct 2026 Householder
• 26/3800/HSE Awaiting decision

  29 Monks Avenue Barnet EN5 1BZ

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

  Received 20 Oct, published by the council 21 Oct 2026 Householder
• 26/3791/HSE Awaiting decision

  149 Montrose Avenue Edgware HA8 0DZ

  New front hardstanding and vechicular access to provide off-street parking

  Received 20 Oct, published by the council 21 Oct 2026 Householder