30 Lansdowne Road London N3 1ES

This site has had 2 applications since 2026.

• 26/3129/192 Awaiting decision

  30 Lansdowne Road London N3 1ES

  Roof extension involving rear dormer window with juliette balcony and 3no. front facing rooflights. Removal of the existing chimney

  Submitted 25 Aug 2026

1. 25 Aug 2026

   Received by Barnet

2. 28 Aug 2026

   Added to PlanIndex

3. 1 Oct 2026

   Status changed to Prior Approval Not Required

   Previously Pending Consideration.

4. Decision

   Awaiting decision

   Decision expected by 20 October 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 prior approval applications in a median of 36 days. More in our guide to how long planning decisions take.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 30 Lansdowne Road London N3 1ES

  26/3129/192 Submitted 25 Aug 2026 50 yards away

  79% historically approved · decision due ~20 Oct

  Roof extension involving rear dormer window with juliette balcony and 3no. front facing rooflights. Removal of the existing chimney

  Awaiting decision Extension Loft or dormer +1

• 26 Lansdowne Road London N3 1ES

  21/5680/PNH Submitted 26 Oct 2021 50 yards away

  Single storey rear extension with a proposed depth of 5.30 metres from original rear wall, eaves height of 3.00 metres and maximum height of 3.75 metres.

  Granted Prior approval Extension 5 docs
  Small domestic

• 15 Lansdowne Road London N3 1ET

  26/2047/HSE Submitted 2 Jun 2026 50 yards away

  Single storey rear extension and extension to existing raised patio

  Granted Householder Extension 8 docs
  Small domestic

• 50 Lansdowne Road London N3 1ES

  26/1592/HSE Submitted 28 Apr 2026 100 yards away

  Erection of a rear outbuilding with 3no. rooflights

  Refused Householder Loft or dormer 15 docs
  Small domestic

• 50 Lansdowne Road London N3 1ES

  26/0055/HSE Submitted 7 Jan 2026 100 yards away

  77% historically approved · decision due ~6 Mar

  Erection of a rear outbuilding with 3no. rooflights

  Awaiting decision Householder Loft or dormer 11 docs
  Small domestic

• 45 Grosvenor Road London N3 1EY

  21/5843/FUL Submitted 3 Nov 2021 100 yards away

  New front porch

  Granted Full applications Extension 11 docs
  Small domestic

• 26/3835/PNH Awaiting decision

  3 Devonshire Crescent London NW7 1DN

  Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.48 metres and eaves height of 3.00 metres. Following demolition of existing rear outrigger.

  22 Oct 2026 Prior approval
• 26/3832/PNH Awaiting decision

  48 Alverstone Avenue Barnet EN4 8EB

  Single storey rear extension with a proposed depth of 4.5 metres, maximum height of 3.15 metres and eaves height of 3 metres following demolition of existing rear extension.

  22 Oct 2026 Prior approval
• 26/3823/PNH Awaiting decision

  7 Southbourne Crescent London NW4 2LB

  Single storey rear extension added to an existing extension with the total extension measuring 6.00 metres deep, with a maximum height of 3.00 metres and an eaves height of 3.00 metres.

  21 Oct 2026 Prior approval
• 26/3809/PND Awaiting decision

  10 Clifford Road Barnet EN5 5PG

  Demolition of existing garage

  21 Oct 2026 Prior approval
• 26/3819/PNH Awaiting decision

  78 Russell Lane London N20 0AP

  2no. Single storey rear extensions with a proposed depth of 7.00 metres, maximum height of 3.60 metres and eaves height of 3.00 metres. Following demolition of the existing side/rear outrigger.

  Received 20 Oct, published by the council 22 Oct 2026 Prior approval