Planning application
78 Lyonsdown Road Barnet EN5 1JL
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 and alteration of existing roof above existing two storey side. (Phase 1) Roof extension involving hip to gable, rear dormer with juliette balcony, 3no. front facing rooflights and new side gable window. (Phase 2)
As published by the council, reference 25/5114/192
Application record
- Reference
- 25/5114/192
- Type
- Proposed Lawful Development Certificate
- Status
- Pending Consideration
- Received
- 19 Dec 2025
- Validated
- 19 Dec 2025
- Ward
- Barnet Vale
- Postcode
- EN5 1JL
Timeline
Dates from the published record
-
19 Dec 2025
Received by Barnet
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 February 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, an architecture practice
53 applications on PlanIndex · across 11 councils · 85% 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
12 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
-
78 Lyonsdown Road Barnet EN5 1JL
Single storey side and rear extension. Front porch extension. Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window
Granted Householder Extension Loft or dormer +1 14 docsSmall domestic -
80 Lyonsdown Road Barnet EN5 1JL
77% historically approved · decision due ~13 Feb
New front hardstanding and vehicular access to provide off-street parking. New front hard and soft landscaping and brick fence wall
Awaiting decision Householder 7 docsSmall domestic -
80 Lyonsdown Road Barnet EN5 1JL
Single storey rear extension. Two storey side infill extension. New front porch. Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Changes to fenestration
Granted Householder Extension Loft or dormer +1 14 docsSmall domestic -
80 Lyonsdown Road Barnet EN5 1JL
Single storey rear extension. Two storey side infill extension. New front porch. Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Changes to fenestration.
Granted Householder Extension Loft or dormer +1 14 docsSmall domestic -
8 Hasluck Gardens Barnet EN5 1HT
Variation of condition 3 (Materials) pursuant to planning permission 24/0953/HSE dated 26/06/2024 for `Part single, part two storey side and rear extension with patio area. Single storey front extension. Replacement of front bay window bricks with cladding. Roof extension involving side and rear dormer windows, front and side facing rooflights and new side gable window` Amendments include change from red tiles to grey tiles
Granted Conditions Extension Loft or dormer +1 6 docsSmall domestic -
Fairway Court Great North Road Barnet EN5 1HJ
61% historically approved · decision due ~22 Jun
Re-rendering of all external elevations,. Replacement of all existing balcony balustrades and replacement of existing entrance canopies to blocks A and B
Awaiting decision Full applications 8 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