11 Tretawn Park London NW7 4PS

This site has had 3 applications since 2026: 1 approved, 1 refused.

• 26/2758/RCU Decided

  11 Tretawn Park London NW7 4PS

  Single storey side extension. 2no. additional rooflights to main roof. (Retrospective Application) (AMENDED PLANS AND DESCRIPTION)

  Submitted 24 Jul 2026
• 26/1773/NMA Granted

  11 Tretawn Park London NW7 4PS

  Non material amendment to planning permission 22/5054/HSE dated 09/02/2023 for 'Ground floor rear extension. New pitched roof including extensions at roof level to side and front, new roof finishes and 2no side facing rooflights. New front and side balconies with associated railings. Alterations of existing window and door openings. Change to external wall finish. Alteration to existing front vehicular access and front hardstanding. Changes to boundary treatment. Installation of flue' Amendments include minor revisions to windows and doors

  Decided 2 Jun 2026 Amendments

1. 15 Jun 2026

   Received by Barnet

2. 22 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 20 Jul 2026

   Decision issued: Unlawful

4. 16 Aug 2026

   Added to PlanIndex

Barnet refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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.

• 11 Tretawn Park London NW7 4PS

  26/1773/NMA Submitted 12 May 2026 50 yards away

  Non material amendment to planning permission 22/5054/HSE dated 09/02/2023 for 'Ground floor rear extension. New pitched roof including extensions at roof level to side and front, new roof finishes and 2no side facing rooflights. New front and side balconies with associated railings. Alterations of existing window and door openings. Change to external wall finish. Alteration to existing front vehicular access and front hardstanding. Changes to boundary treatment. Installation of flue' Amendments include minor revisions to windows and doors

  Granted Amendments Extension Loft or dormer +2 8 docs

• 11 Tretawn Park London NW7 4PS

  26/2758/RCU Submitted 24 Jul 2026 50 yards away

  79% historically approved · decision due ~2 Oct

  Single storey side extension. 2no. additional rooflights to main roof. (Retrospective Application) (AMENDED PLANS AND DESCRIPTION)

  Decided Extension Loft or dormer
  Small domestic

• 15 Tretawn Park London NW7 4PS

  TPP/0423/26 Submitted 20 Jul 2026 50 yards away

  79% historically approved · decision due ~14 Sep

  1 x Yew (applicants ref. T1) - Fell. Standing in Group G2 of Tree Preservation Order. (Exempt 5 day notice)

  Awaiting decision Trees

• 1 Tretawn Park London NW7 4PS

  25/5166/HSE Submitted 24 Dec 2025 100 yards away

  77% historically approved · decision due ~4 Mar

  Two storey front extension and part single, part two storey side and rear extension with first floor juliette balcony to front elevation and first floor balconies to front and rear elevations, following demolition of existing garage and conservatory. Associated alterations to roof including increase in ridge height

  Awaiting decision Householder Extension Roofing +1 11 docs
  Small domestic

• 1 Tretawn Park London NW7 4PS

  25/3952/HSE Submitted 29 Sep 2025 100 yards away

  77% historically approved · decision due ~28 Nov

  Two storey front extension and part single, part two storey side and rear extension with first floor balconies to front and rear elevations, following demolition of existing garage and conservatory. Associated alterations to roof including increase in ridge height

  Awaiting decision Householder Extension Roofing +1 14 docs
  Small domestic

• 60 Lawrence Avenue London NW7 4NN

  26/0743/192 Submitted 26 Feb 2026 100 yards away

  Roof extension with rear dormer, 2no. Front facing rooflights and 1no. side facing rooflight (amended)

  Granted Lawful development Extension Loft or dormer 4 docs

• 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).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 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)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

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

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development