11 Thyra Grove London N12 8HB

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

• 26/2208/PNH Granted

  11 Thyra Grove London N12 8HB

  2No. single storey rear extensions with a proposed depth of 6.00m, maximum height of 3.98m and eaves height of 2.98m following the demolition of the existing conservatory.

  Decided 28 Jul 2026 Prior approval
• 25/5143/PNH Awaiting decision

  11 Thyra Grove London N12 8HB

  Single storey rear extension with a proposed depth of 6.00m, maximum height of 3.98m and eaves height of 2.98m following the demolition of the existing conservatory

  Submitted 22 Dec 2025 Prior approval

1. 2 Oct 2026

   Received by Barnet

2. 5 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 27 November 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.

• 8 Thyra Grove London N12 8HB

  26/0926/192 Submitted 11 Mar 2026 50 yards away

  Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights

  Granted Lawful development Extension Loft or dormer +1 5 docs

• 8 Thyra Grove London N12 8HB

  26/2358/PNH Submitted 22 Jun 2026 50 yards away

  Single storey rear extension with a maximum proposed depth of 4.9m, a maximum height of 3.42m and an eaves height of 2.93m

  Refused Prior approval Extension 10 docs
  Small domestic

• 8 Thyra Grove London N12 8HB

  26/2357/PNH Submitted 22 Jun 2026 50 yards away

  Single storey rear extension with a maximum proposed depth of 6.0m, a maximum height of 3.42m and an eaves height of 2.93m.

  Refused Prior approval Extension 10 docs
  Small domestic

• 8 Thyra Grove London N12 8HB

  26/1850/PNH Submitted 18 May 2026 50 yards away

  Single storey rear extension following demolition of existing rear extension at a proposed depth of 6.0m from outrigger and 6.0m from the original rear wall, a maximum height of 3.42m and an eaves height of 2.93m

  Withdrawn Prior approval Extension Demolition 11 docs
  Small domestic

• 11 Thyra Grove London N12 8HB

  25/5143/PNH Submitted 22 Dec 2025 50 yards away

  56% historically approved · decision due ~16 Feb

  Single storey rear extension with a proposed depth of 6.00m, maximum height of 3.98m and eaves height of 2.98m following the demolition of the existing conservatory

  Awaiting decision Prior approval Extension Demolition 7 docs
  Small domestic

• 11 Thyra Grove London N12 8HB

  26/2208/PNH Submitted 15 Jun 2026 50 yards away

  2No. single storey rear extensions with a proposed depth of 6.00m, maximum height of 3.98m and eaves height of 2.98m following the demolition of the existing conservatory.

  Granted Prior approval Extension Demolition 9 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