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Planning application

Cornwall House Cornwall Avenue London N3 1LD

Granted Barnet 26/0518/FUL Full Application

Works: Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

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

As published by the council, reference 26/0518/FUL

Application record

Reference
26/0518/FUL
Type
Full Application
Status
Approved subject to conditions
Decision
Granted As published: Approve subject to conditions
Received
10 Feb 2026
Validated
13 Feb 2026
Decided
16 Apr 2026
Ward
West Finchley
Decision by
Delegated Decision
Postcode
N3 1LD

Site history

Applications at this address on the Barnet register

This site has had 4 applications since 2026: 4 approved, 0 refused.

  • 26/1909/CON Granted

    Cornwall House Cornwall Avenue London N3 1LD

    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

    Decided 21 Jul 2026 Conditions
  • 26/1879/CON Granted

    Cornwall House Cornwall Avenue London N3 1LD

    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

    Decided 21 Jul 2026 Conditions
  • 26/0519/LBC Granted

    Cornwall House Cornwall Avenue London N3 1LD

    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)

    Decided 16 Apr 2026 Heritage and listed buildings

Timeline

Dates from the published record

  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

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/1879/CON Granted

    Cornwall House Cornwall Avenue London N3 1LD

    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

    Decided 21 Jul 2026 Conditions

Documents

Plans, drawings, consultee responses and the officer's report

22 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Barnet granted permission on 16 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • Cornwall House Cornwall Avenue London N3 1LD

    26/1909/CON Submitted 21 May 2026 50 yards 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 50 yards 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 50 yards 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

  • 113 Ballards Lane London N3 1XY

    26/3516/FUL Submitted 28 Sep 2026 50 yards away

    63% historically approved · decision due ~26 Nov

    Change of use of the ground floor from retail shop (Class E (a) to Class E (b) including internal alterations to provide customer and staff facilities, kitchen and cold-room areas, together with associated external alterations

    Awaiting decision Full applications

  • 39 Cornwall Avenue London N3 1LG

    26/3192/HSE Submitted 1 Sep 2026 150 yards away

    77% historically approved · decision due ~27 Oct

    New front porch (amended plans)

    Decided Householder Extension
    Small domestic

  • 32 Cornwall Avenue London N3 1LG

    26/2627/191 Submitted 14 Jul 2026 150 yards 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 18 docs
    Domestic

In Barnet

  • 26/3828/FUL Awaiting decision

    41 - 43 Sneath Avenue London NW11 9AJ

    Part single, part two storey rear extensions to both properties following the demolition of the single storey rear extension at no.43

    22 Oct 2026 Full applications
  • 26/3829/FUL Awaiting decision

    369 Watford Way London NW4 4TE

    Change of use of the existing dwelling (Use Class C3) to a 11 bed 11 Person HMO (House in Multiple Occupation) (Use Class Sui Generis) including part single, part two storey side and rear extensions and roof extension involving rear dormer window. Associated refuse/recycling storage, cycle parking, landscaping and external amenity space

    22 Oct 2026 Full applications
  • 26/3812/FUL Awaiting decision

    Ground Floor Battle House Mews 1 East Barnet Road Barnet EN4 8RR

    Erection of front canopy for fruit and vegetables area and installation awning and shutter box

    Received 21 Oct, published by the council 22 Oct 2026 Full applications
  • 26/3821/FUL Awaiting decision

    170 Long Lane London N3 2RA

    Roof extension with rear dormer windows and 5no. rooflights to provide 1no. self-contained flat

    21 Oct 2026 Full applications
  • 26/3794/FUL Awaiting decision

    283 Cricklewood Lane London NW2 2JJ

    Change of use of the property from a single family dwelling (Class C3) to a House in Multiple Occupation (HMO) (Sui generis) for up to 7 people. Associated refuse/recycling and cycle storage

    20 Oct 2026 Full applications