Planning application
49 Heddon Court Avenue Barnet EN4 9NG
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
Removal of chimney on rear elevation and removal of pitched roof above existing two storey side extension (Phase 1) Roof extension involving hip to gable, rear dormer window with juliette balcony, 1no. front facing rooflight and side gable window (Phase 2 to commence when phase 1 completed) (AMENDED)
As published by the council, reference 26/0133/192
Application record
- Reference
- 26/0133/192
- Type
- Proposed Lawful Development Certificate
- Status
- Pending Decision
- Received
- 14 Jan 2026
- Validated
- 14 Jan 2026
- Ward
- East Barnet
- Postcode
- EN4 9NG
Site history
Applications at this address on the Barnet register
This site has had 4 applications since 2026: 1 approved, 1 refused.
-
26/1431/HSE Awaiting decision
49 Heddon Court Avenue Barnet EN4 9NG
Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level
-
26/0599/HSE Granted
49 Heddon Court Avenue Barnet EN4 9NG
Roof extension involving rear dormer window with juliette balcony, 1no front facing rooflight and new side gable window with retention of existing side pitched roof
-
26/0548/HSE Refused
49 Heddon Court Avenue Barnet EN4 9NG
Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level
Timeline
Dates from the published record
-
14 Jan 2026
Received by Barnet
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 11 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, registered in Barnet
42 applications on PlanIndex · across 4 councils · 73% 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
10 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
This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
49 Heddon Court Avenue Barnet EN4 9NG
77% historically approved · decision due ~15 Jun
Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level
Awaiting decision Householder Extension 10 docsDomestic -
49 Heddon Court Avenue Barnet EN4 9NG
Roof extension involving rear dormer window with juliette balcony, 1no front facing rooflight and new side gable window with retention of existing side pitched roof
Granted Householder Extension Loft or dormer +1 10 docsDomestic -
49 Heddon Court Avenue Barnet EN4 9NG
Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level
Refused Householder Extension 12 docsDomestic -
92 Ashurst Road Barnet EN4 9LG
79% historically approved · decision due ~5 Jun
Phase 1: Removal and alteration to existing roof of existing two storey side extension. Phase 2: Roof extension involving hip to gable, rear dormer with Juliette balcony, 4no. front facing rooflights and new side gable window
Awaiting decision Lawful development Extension Loft or dormer +1 10 docs -
57 Belmont Avenue Barnet EN4 9JS
79% historically approved · decision due ~12 Oct
New front porch
Awaiting decision ExtensionSmall domestic -
59 Belmont Avenue Barnet EN4 9JS
79% historically approved · decision due ~13 Oct
New front porch
Awaiting decision ExtensionSmall domestic
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)