Planning application
26/1354/192
25 Park Avenue London NW11 7SL
Proposal
Alterations to 3no. existing chimneys and minor alterations to existing side dormer (Phase 1) Roof extensions and alterations involving 2no. side facing hip to gable extensions, 3no. front facing dormer windows, 2 no. rear facing dormer windows, new side gable windows and 2no. rear facing rooflights (Phase 2)
As published by the council, reference 26/1354/192
Timeline
Dates from the published record
-
13 Apr 2026
Received by Barnet
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14 Apr 2026
Validated
Checked as complete and ready for consideration.
-
11 May 2026
Decision issued: Lawful
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25 Jul 2026
Added to PlanIndex
After 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
-
26/2623/FUL Awaiting decision
3 Park Avenue London NW11 7SL
Demolition of existing dwellinghouse and construction of new two storey detached dwellinghouse with room in the roof, associated amenity space, off-street parking, refuse and cycle parking and installation of air source heat pump within a timber enclosure
-
26/2656/HSE Awaiting decision
25 Park Avenue London NW11 7SL
Roof extension including hip to gable to both sides with gable windows, 3no. dormer windows to front elevation, 2no. dormer windows and 2no. rooflights to rear elevation. Alterations to existing chimneys. Replacement of existing ground and first floor windows
-
26/2049/HSE Awaiting decision
31 The Park London NW11 7ST
Single storey rear extension and pergola
-
26/2057/HSE Awaiting decision
3 Golders Park Close London NW11 7QR
Part single, part two storey front and rear extensions. Construction of an additional storey at second floor level. Installation of solar panels to roof. Provision of green roofs to front and rear. Erection of a front boundary wall with associated brick piers, timber fence and gates. New pedestrian footpath at front and new patio to rear. (Amendments to approved planning permission 23/1536/HSE)
-
26/2585/CON Awaiting decision
5 Golders Park Close London NW11 7QR
Submission of details of conditions 7 (Green roof) 10 (Before survey) 12 (Privacy screens) pursuant to planning permission 21/0852/FUL dated 22/04/2021
-
TPP/0270/26 Decided
3 West Heath Avenue London NW11 7QS
1 x Storm Damaged Horse Chestnut (applicants ref. T1) - Removal of the crown of the tree to the historical pruning points. Standing in T46 of Tree Preservation Order. 5 day notice.
Other lawful development applications
In Barnet
-
26/2836/192 Awaiting decision
20 Derwent Avenue Barnet EN4 8LX
Roof extension involving rear dormer window with juliette balcony
-
26/2815/192 Awaiting decision
18 Boyne Avenue London NW4 2JN
Roof extension involving rear dormer window and 2no. front facing rooflights
-
26/2824/192 Awaiting decision
41 Greenway Close London N20 8ES
Erection of a rear outbuilding
-
26/2809/192 Awaiting decision
43A Clifford Road Barnet EN5 5PD
Single storey rear extension following the demolition of existing canopy
-
26/2806/192 Awaiting decision
14 Lincoln Road London N2 9DL
Roof extension involving 1no. rear dormer window over main roof with juliette balcony and 1no. rear dormer over outrigger roof and 3no. front facing rooflights. Alterations to existing lean-to to form rear extension with flat roof with parapet walls and 1no. skylight. Alterations to fenestration and doors