Planning application
5 Stanhope Avenue London N3 3LX
Works: Extension Loft or dormer Windows or glazing
Decided. The decision notice on the council portal carries the outcome in full, including any conditions.
Proposal
Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights
As published by the council, reference 26/0670/192
Application record
- Reference
- 26/0670/192
- Type
- Proposed Lawful Development Certificate
- Status
- Lawful
- Decision
- Lawful
- Received
- 20 Feb 2026
- Validated
- 20 Feb 2026
- Decided
- 17 Apr 2026
- Ward
- Finchley Church End
- Decision by
- Delegated Decision
- Postcode
- N3 3LX
Timeline
Dates from the published record
-
20 Feb 2026
Received by Barnet
-
17 Apr 2026
Decision issued: Lawful
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice registered in London
40 applications on PlanIndex · across 10 councils · 74% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
4 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 documentsAfter the decision
The process from here
The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.
If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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5 Stanhope Avenue London N3 3LX
77% historically approved · decision due ~25 Jun
Single storey rear extension with green roof and new terrace area following demolition of the existing shed. New ground floor side window. New front retaining wall, ramp and access steps with associated railings. New hardstanding to provide off-street parking. New side access gate and refuse storage area
Awaiting decision Householder Extension Demolition +1 5 docsSmall domestic -
5 Stanhope Avenue London N3 3LX
77% historically approved · decision due ~20 Apr
Two storey rear extension with green roof and new terrace area following demolition of the existing shed. New ground floor side window. New front retaining wall, ramp and access steps with associated railings. New hardstanding to provide off-street parking. New side access gate and refuse storage area
Awaiting decision Householder Extension Demolition +1 4 docsSmall domestic -
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Awaiting decision Trees -
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Refused Amendments New dwelling Extension 17 docs -
202 - 208 Regents Park Road London N3 3HP
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180A And 180B Regents Park Road London N3 3HR
79% historically approved · decision due ~11 Dec
Amalgamation of two self-contained flats at ground and first floor levels to form a single dwellinghouse (Use Class C3), incorporating implementation of existing planning permission Ref 25/3273/FUL for a single storey rear extension with rooflight and alterations to the existing patio area
Awaiting decision Lawful development New dwelling Extension +1 8 docsSmall domestic
Other lawful development applications
In Barnet
-
26/1907/191 Decided
8 Golders Manor Drive London NW11 9HT
Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)
-
26/2059/192 Decided
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding
-
26/2066/192 Decided
355 Hendon Way London NW4 3NB
Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)
-
26/1663/192 Decided
152 Deans Lane Edgware HA8 9NT
Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)
-
26/2025/192 Decided
18 Hale Drive London NW7 3DU
Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window