Planning application
345 Nether Street London N3 1JN
Works: Demolition
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Erection of a rear outbuilding with patio area following demolition of the existing outbuilding
As published by the council, reference 26/0042/192
Application record
- Reference
- 26/0042/192
- Type
- Proposed Lawful Development Certificate
- Status
- Pending Consideration
- Received
- 7 Jan 2026
- Validated
- 7 Jan 2026
- Ward
- Finchley Church End
- Postcode
- N3 1JN
Timeline
Dates from the published record
-
7 Jan 2026
Received by Barnet
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 4 March 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 43 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, a design practice registered in London
2 applications on PlanIndex
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
5 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
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18 Sellers Hall Close London N3 1JL
New front porch. Replacement of existing rear windows and doors including ground floor double doors and first floor windows with new balustrades to terrace area and 2no. second floor juliette balconies . Render finish to existing ground floor rear and side elevation
Granted Householder Extension Windows or glazing 9 docsSmall domestic -
15 Sellers Hall Close London N3 1JL
77% historically approved · decision due ~19 Jun
Extension of the existing outbuilding and replacement of flat roof with pitched roof to provide loft storage with internal access
Awaiting decision Householder Extension 11 docsSmall domestic -
1 Lovers Walk London N3 1JH
79% historically approved · decision due ~14 Oct
1 x Sycamore (applicants ref. T1) - Remove trunk/epicormic growth and crown lift to provide up to 4m ground clearance, to improve clearance from access route and maintain a suitable pedestrian/vehicle clearance. Standing in T1 of Tree Preservation Order.
Awaiting decision Trees -
9 Lovers Walk London N3 1JH
77% historically approved · decision due ~16 Jun
Remodelling of the existing outbuilding including new access steps to garden level and replacement of flat roof with pitched roof to provide loft storage with internal access following removal of the existing wall
Awaiting decision Householder 8 docsSmall domestic -
Flat 2 29 The Grove London N3 1QT
Installation of ground floor side window
Granted Full applications Windows or glazing 6 docs -
11 Grove Avenue London N3 1QS
Roof extension involving 1no. rear dormer window over main roof and 1no. rear dormer over outrigger roof with side window and 2no. front facing rooflights.
Decided Lawful development Extension Loft or dormer +1 10 docs
Other lawful development applications
In Barnet
-
26/2679/192 Decided
21 Myddelton Park London N20 0JH
Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).
-
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)