Cornwall House Cornwall Avenue London N3 1LD

1. 10 Feb 2026

   Received by Barnet

2. 13 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 16 Apr 2026

   Decision issued: Approve subject to conditions

4. 10 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• Cornwall House Cornwall Avenue London N3 1LD

  26/1909/CON Submitted 21 May 2026 0m away

  Submission of details of conditions 3 (Demolition and Construction Management Plan), 05 (Boiler Information), 10 (Noise Management Plan), 12 (Travel Plan), 13 (Materials), 14 (Refuse Enclosures), 15 (Cycle Storage), 20 (Biodiversity Enhancement Plan), 21 (Landscaping), 22 (External Storage Details), 23 (External Lighting), 24 (Boundary Treatments) and 25 (Kitchen Vent Details) pursuant to listed building consent 26/0519/LBC dated 16/04/2026

  Granted Conditions Demolition 19 docs

• Cornwall House Cornwall Avenue London N3 1LD

  26/0519/LBC Submitted 10 Feb 2026 0m away

  Change of use from doctors surgery to children's day nursery involving internal and external alterations, as well as alterations to doors and windows. Associated alterations to hard and soft landscaping, and provision of cycle, refuse, buggy and toy stores. Installation of 1no. Air Conditioning unit within associated timber enclosure. New access gates, restoration of boundary walls and installation of secondary privacy fencing. Internal alterations including: New internal staircase to replace an existing staircase; Alterations to rear porch; Removal of modern stud wall; Creation of openings in walls; Changes to internal doors; Addition of a dumb waiter between ground floor kitchen and first floor level; Removal of storage cupboards; Removal of secondary internal door to front entrance; Installation of additional WCs (Listed Building Consent)

  Granted Heritage and listed buildings Extension Windows or glazing 21 docs
  Small domestic

• Cornwall House Cornwall Avenue London N3 1LD

  26/1879/CON Submitted 19 May 2026 9m away

  Submission of details of conditions 3 (Demolition and Construction Management Plan) 05 (Boiler Information) 10 (Noise Management Plan) 12 (Travel Plan) 13 (Materials) 14 (Refuse Enclosures) 15 (Cycle Storage) 20 (Biodiversity) 21 (Landscaping) 22 (External Storage Details) 23 (External Lighting) 24 (Boundary Treatments) and 25 (Kitchen Vent Details) pursuant to planning permission 26/0518/FUL dated 13/02/2026

  Granted Conditions Demolition 19 docs

• 39 Cornwall Avenue London N3 1LG

  26/3192/HSE Submitted 1 Sep 2026 116m away

  77% historically approved · decision due ~27 Oct

  New front porch

  Awaiting decision Householder Extension
  Small domestic

• 32 Cornwall Avenue London N3 1LG

  26/2627/191 Submitted 14 Jul 2026 116m away

  79% historically approved · decision due ~1 Oct

  Conversion of part of the 1st floor and 2nd floor to create 1no. self-contained residential dwelling (Use Class C3)

  Awaiting decision
  Domestic

• 3A Long Lane London N3 2PR

  26/1869/CON Submitted 19 May 2026 126m away

  Submission of details of conditions 4 (Refuse and recycling) 5 (Cycle parking/storage) pursuant to planning permission 24/3889/FUL dated 22/07/2024

  Granted Conditions 3 docs

• 26/3239/FUL Awaiting decision

  Henley Court Watford Way London NW4 4SR

  Construction of additional floor to provide 7no. self-contained flats. Construction of two storey side extension with rooms in the roofspace to provide 2no. self-contained flats. Associated refuse storage

  4 Sep 2026 Full applications
• 26/3238/FUL Awaiting decision

  2 North End Road London NW11 7PH

  New shopfront with double glazed front folding doors

  4 Sep 2026 Full applications
• 26/3230/FUL Awaiting decision

  50 Ballards Lane London N3 2DP

  Installation of a kitchen extract ventilation system within existing commercial unit on ground floor and flat roof with a discharge flue fixed to the rear elevation, together with associated internal alterations

  3 Sep 2026 Full applications
• 26/3199/FUL Awaiting decision

  494 Finchley Road London NW11 8DE

  Demolition of the existing dwelling and erection of a two storey building over basement car park with rooms in the roofspace to provide 6no. self-contained residential dwellings. Associated amenity space, cycle stores and refuse/recycling storage

  1 Sep 2026 Full applications
• 26/3200/FUL Awaiting decision

  289 Regents Park Road London N3 3JY

  Removal of front extension. Single storey side extension including new walls to replace existing boundary fences. (Part Retrospective)

  1 Sep 2026 Full applications