Planning application
37 Sunbury Avenue London NW7 3SL
Works: Extension Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Roof extension involving hip to gable to rear with rear juliette balcony, and 1no. side dormer window on either side. Removal of the existing chimney stack [Amended Description]
As published by the council, reference 26/1422/192
Application record
- Reference
- 26/1422/192
- Type
- Proposed Lawful Development Certificate
- Status
- Lawful
- Decision
- Granted As published: Lawful
- Received
- 17 Apr 2026
- Validated
- 17 Apr 2026
- Decided
- 12 May 2026
- Ward
- Edgware
- Decision by
- Delegated Decision
- Postcode
- NW7 3SL
Site history
Applications at this address on the Barnet register
This site has had 2 applications since 2026: 1 approved, 0 refused.
-
26/2310/HSE Awaiting decision
37 Sunbury Avenue London NW7 3SL
Two storey side extension including conversion of the existing garage into habitable room, insertion of window to replace the garage door. Roof extension involving hip to gable to rear with rear juliette balcony, and 1no. side dormer window on either side. Removal of the existing chimney stack
Timeline
Dates from the published record
-
17 Apr 2026
Received by Barnet
-
12 May 2026
Decision issued: Lawful
-
25 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
John Perrin & Sons Ltd Agent, registered in Enfield
Active · incorporated 2013 · Enfield
135 applications on PlanIndex · across 8 councils · 89% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
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.
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Open the documentsWhat this grant of permission means
Barnet granted permission on 12 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
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 0.3 miles
-
37 Sunbury Avenue London NW7 3SL
77% historically approved · decision due ~14 Aug
Two storey side extension including conversion of the existing garage into habitable room, insertion of window to replace the garage door. Roof extension involving hip to gable to rear with rear juliette balcony, and 1no. side dormer window on either side. Removal of the existing chimney stack
Awaiting decision Householder Extension Loft or dormer +1 11 docsDomestic -
50 Sunbury Avenue London NW7 3SJ
80% historically approved · decision due ~31 Mar
Erection of a rear outbuilding
Awaiting decision Lawful development 4 docs -
23 Selvage Lane London NW7 3SS
77% historically approved · decision due ~14 Dec
Replacement of existing flat roof with new pitched roof including raising eaves height to the existing outbuilding
Withdrawn HouseholderSmall domestic -
21 Selvage Lane London NW7 3SS
77% historically approved · decision due ~29 Dec
Single storey front porch extension with pitched roof
Awaiting decision Householder ExtensionSmall domestic -
34 Selvage Lane London NW7 3SP
78% historically approved · decision due ~5 Oct
Single storey rear infill extension
Awaiting decision ExtensionSmall domestic -
34 Selvage Lane London NW7 3SP
56% historically approved · decision due ~29 Oct
Single storey rear extension with a proposed depth of 3.80 metres, maximum height of 3.00 metres and eaves height of 2.75 metres, following partial demolition of existing side manifestation.
Decided Prior approval Extension DemolitionSmall domestic
Other lawful development applications
In Barnet
-
26/2679/192 Granted
21 Myddelton Park London N20 0JH
Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).
-
26/1362/191 Refused
145 Cotswold Gardens London NW2 1PL
Use as a House in Multiple Occupation (HMO) for 6 people
-
26/1907/191 Granted
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)
-
26/2392/192 Refused
6 Mostyn Road Edgware HA8 0JD
New front hardstanding and vehicular access to provide off-street parking
-
26/2059/192 Refused
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding