54 Cornwallis Grove London N9 0JS

This site has had 3 applications since 2026: 0 approved, 1 refused.

• 26/04091/CEA Awaiting decision

  54 Cornwallis Grove London N9 0JS

  Rear dormer, dormer to rear outrigger and front roof lights.

  Submitted 24 Sep 2026
• 26/02396/CEA Refused

  54 Cornwallis Grove London N9 0JS

  Single storey rear extension, single storey side infill extension, rear dormer, dormer to rear outrigger and front roof lights.

  Decided 19 Aug 2026 Lawful development

1. 24 Sep 2026

   Received by Enfield

2. 1 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 19 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Enfield took a median of 58 days over the applications it decided in the last year.

This application is with Enfield for determination, against a statutory target of eight weeks. Over the last year Enfield's median decision took 58 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Enfield's portal will say. Our guide explains the common types.

• 54 Cornwallis Grove London N9 0JS

  26/04091/CEA Submitted 24 Sep 2026 50 yards away

  75% historically approved · decision due ~19 Dec

  Rear dormer, dormer to rear outrigger and front roof lights.

  Awaiting decision Extension Loft or dormer 3 docs

• 45 Cornwallis Grove London N9 0JR

  24/00868/FUL Submitted 18 Mar 2024 50 yards away

  Change of use from Use Class C3 (dwelling house) to Use Class C4 (house in multiple occupation) (retrospective).

  Granted Full applications 18 docs
  Domestic

• 50 Bath Road London N9 0JU

  22/01862/CEA Submitted 26 May 2022 50 yards away

  Single storey extensions and rear dormer and rooflights to front.

  Granted Lawful development Extension Loft or dormer 11 docs
  Small domestic

• 54 Cornwallis Grove London N9 0JS

  26/02396/CEA Submitted 8 Jun 2026 50 yards away

  Single storey rear extension, single storey side infill extension, rear dormer, dormer to rear outrigger and front roof lights.

  Refused Lawful development Extension Loft or dormer 5 docs
  Small domestic

• 2 Cornwallis Avenue London N9 0JP

  26/03038/PRH Submitted 17 Jul 2026 50 yards away

  Single storey rear extension 6m deep x 2.4m high (2.4m high to eaves).

  Granted Extension
  Small domestic

• 31 Cornwallis Road London N9 0JJ

  26/03543/FUL Submitted 21 Aug 2026 100 yards away

  65% historically approved · decision due ~28 Oct

  Change of use from Use Class C3 (dwelling house) to Use Class C4 (HMO-house in multiple occupation) with associated amenity, refuse and cycle storage involving single storey rear/side extension with rear dormer, rear outrigger dormer and front rooflights.

  Awaiting decision Full applications Extension Loft or dormer
  Small domestic