Planning application
48 Rosemary Avenue London N3 2QN
Works: Extension Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Roof extension involving hip to gable, rear dormer window, 2no front facing rooflights
As published by the council, reference 26/0704/192
Application record
- Reference
- 26/0704/192
- Type
- Proposed Lawful Development Certificate
- Status
- Pending Consideration
- Received
- 23 Feb 2026
- Validated
- 5 Mar 2026
- Ward
- Finchley Church End
- Postcode
- N3 2QN
Timeline
Dates from the published record
-
23 Feb 2026
Received by Barnet
-
5 Mar 2026
Validated
Checked as complete and ready for consideration.
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 30 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Barnet took a median of 42 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Agent on file, registered in London
4 applications on PlanIndex · across 3 councils
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
11 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 happens while it is decided
The process from here
This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
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
-
66 Rosemary Avenue London N3 2QN
79% historically approved · decision due ~8 Jul
Use of property as 6 bed, 6 person HMO (House in Multiple Occupancy) use class C4
Awaiting decision Lawful development 25 docs -
1 Rosemary Avenue London N3 2QP
70% historically approved · decision due ~7 Apr
Non material amendment to planning permission 25/2642/HSE dated 30/07/2025 for `Single storey rear extension with 2no. rooflights, following demolition of existing sunroom and rear outrigger.` Amendment includes addition of 2no. side windows
Awaiting decision Amendments Extension Loft or dormer +2 3 docsSmall domestic -
Land To The Rear Of 14 And 23 Tangle Tree Close London N3 2TR
79% historically approved · decision due ~31 Oct
Outline application for the erection of a 53-bedroom care home Class C2 with all matters reserved
Awaiting decision Outline 11 docs -
43 Briarfield Avenue London N3 2LG
77% historically approved · decision due ~24 Nov
Single storey rear extension with 2no. rooflights
Awaiting decision Householder Extension Loft or dormer 11 docsSmall domestic -
1 Dudley Road London N3 2QR
79% historically approved · decision due ~2 Sep
Roof extension involving x2 hip to gables, rear dormer window with juliette balcony and 3no. front facing rooflights
Awaiting decision Extension Loft or dormer +1 -
52 Manor View London N3 2SR
79% historically approved · decision due ~22 Jul
Roof extension involving hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window
Awaiting decision Lawful development Extension Loft or dormer +1 6 docs
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