Planning application
Cornwall House Cornwall Avenue London N3 1LD
Works: Extension Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
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. 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)
As published by the council, reference 26/0519/LBC
Application record
- Reference
- 26/0519/LBC
- Type
- Listed Building Consent / Demolition
- Status
- Approved subject to conditions
- Decision
- 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
Timeline
Dates from the published record
-
10 Feb 2026
Received by Barnet
-
13 Feb 2026
Validated
Checked as complete and ready for consideration.
-
16 Apr 2026
Decision issued: Approve subject to conditions
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
21 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.
Trade members open them from here.
Open the documentsWhat a grant of permission means
The process from here
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.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
-
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
Granted Conditions Demolition 19 docs -
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
Granted Full applications Windows or glazing 22 docs -
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
Granted Conditions Demolition 19 docs -
39 Cornwall Avenue London N3 1LG
77% historically approved · decision due ~27 Oct
New front porch
Awaiting decision Householder ExtensionSmall domestic -
32 Cornwall Avenue London N3 1LG
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 decisionDomestic -
3A Long Lane London N3 2PR
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
Other heritage and listed buildings applications
In Barnet
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26/3154/LBC Awaiting decision
11 Corringway London NW11 7ED
Reconfiguration of partition walls, first-floor bathroom and new staircase to the loft storage area
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26/3098/LBC Awaiting decision
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Partial demolition and reconstruction of boundary walls to the western and southern boundaries. Walls to be reconstructed on new foundations.
-
26/3077/LBC Awaiting decision
70 Hampstead Way London NW11 7XX
Replacement of existing double glazed timber windows and doors
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26/2998/LBC Awaiting decision
91 Willifield Way London NW11 6YH
Installation of safety handrail located by steps at front door
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26/2955/LBC Awaiting decision
5 Hill Close London NW11 7JP
Installation of external air conditioning unit at ground level in side passage, with timber screening