Planning application
1515 High Road London N20 9PJ
Works: Extension Demolition 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
Single storey L-shaped rear extension with proposed depths of 3.0 metres and 4.85 metres, maximum height of 3.0 metres and eaves height of 2.90 metres, following demolition of existing conservatory and garage.
As published by the council, reference 25/4321/PNH
Application record
- Reference
- 25/4321/PNH
- Type
- Prior Notification (Householder)
- Status
- Prior Approval Not Required
- Decision
- Granted As published: Prior Approval Not Required
- Received
- 29 Oct 2025
- Validated
- 30 Oct 2025
- Decided
- 4 Dec 2025
- Ward
- Barnet Vale
- Decision by
- Delegated Decision
- Postcode
- N20 9PJ
Site history
Applications at this address on the Barnet register
This site has had 2 applications since 2025: 1 approved, 0 refused.
-
25/4919/192 Awaiting decision
1515 High Road London N20 9PJ
Single storey rear extension with 1no. rooflight and new patio area following demolition of existing conservatory and garage
Timeline
Dates from the published record
-
29 Oct 2025
Received by Barnet
-
30 Oct 2025
Validated
Checked as complete and ready for consideration.
-
4 Dec 2025
Decision issued: Prior Approval Not Required
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
CASA Architecture + Design, Ltd Agent, an architecture practice registered in London
Active · incorporated 2019 · London
18 applications on PlanIndex · across 4 councils · 75% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
16 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.
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Open the documentsWhat this grant of permission means
Barnet granted permission on 4 December 2025, 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 prior approval applications
Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
1515 High Road London N20 9PJ
80% historically approved · decision due ~4 Feb
Single storey rear extension with 1no. rooflight and new patio area following demolition of existing conservatory and garage
Awaiting decision Lawful development Extension Loft or dormer +1 14 docsSmall domestic -
1522 High Road London N20 9PT
Submission of details of condition 18 (Excavations for Services - tree protect) 19 (Levels) pursuant to planning permission 23/5309/FUL dated 12/02/2024
Granted Conditions Trees 6 docs -
1522 High Road London N20 9PT
Submission of details of condition 8 (Demolition and Construction Mangement Plan) pursuant to planning permission 23/5309/FUL dated 12/02/2024
Granted Conditions Demolition 4 docs -
1522 High Road London N20 9PT
93% historically approved · decision due ~11 Dec
Submission of details of condition 7 (Cycle parking/storage) 20 (Refuse/recycling storage) pursuant to planning permission 23/5309/FUL dated 12/02/2024
Awaiting decision Conditions 2 docs -
21 Walfield Avenue London N20 9PS
56% historically approved · decision due ~14 Nov
Single storey rear extension with a proposed depth of 5.00m, maximum height of 3.70m and eaves height of 3.00m.
Awaiting decision Prior approval Extension 3 docsSmall domestic -
14 Walfield Avenue London N20 9PR
Ground floor single storey rear extension projecting 4m from existing rear wall and 3m in height. Demolition of existing garage.
Granted Prior approval Extension Demolition 6 docsSmall domestic
Other prior approval applications
In Barnet
-
26/3835/PNH Awaiting decision
3 Devonshire Crescent London NW7 1DN
Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.48 metres and eaves height of 3.00 metres. Following demolition of existing rear outrigger.
-
26/3832/PNH Awaiting decision
48 Alverstone Avenue Barnet EN4 8EB
Single storey rear extension with a proposed depth of 4.5 metres, maximum height of 3.15 metres and eaves height of 3 metres following demolition of existing rear extension.
-
26/3823/PNH Awaiting decision
7 Southbourne Crescent London NW4 2LB
Single storey rear extension added to an existing extension with the total extension measuring 6.00 metres deep, with a maximum height of 3.00 metres and an eaves height of 3.00 metres.
-
26/3809/PND Awaiting decision
10 Clifford Road Barnet EN5 5PG
Demolition of existing garage and attached pitched-roof structure
-
26/3819/PNH Awaiting decision
78 Russell Lane London N20 0AP
2no. Single storey rear extensions with a proposed depth of 7.00 metres, maximum height of 3.60 metres and eaves height of 3.00 metres. Following demolition of the existing side/rear outrigger.