Planning application
3 Grenville Close London N3 1UF
Works: Extension Domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
First floor side extension
As published by the council, reference 26/0029/HSE
Application record
- Reference
- 26/0029/HSE
- Type
- Householder Application
- Status
- Pending Consideration
- Received
- 30 Dec 2025
- Validated
- 7 Jan 2026
- Ward
- Finchley Church End
- Postcode
- N3 1UF
Site history
Applications at this address on the Barnet register
This site has had 2 applications since 2025: 1 approved, 0 refused.
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26/1436/NMA Granted
3 Grenville Close London N3 1UF
Non-material amendments to planning permission reference 26/0029/HSE dated 28/03/26 for 'Single Storey rear infill extension, first floor side extension.' Amendments include changes to fenestration to front and rear elevations
Timeline
Dates from the published record
-
30 Dec 2025
Received by Barnet
-
7 Jan 2026
Validated
Checked as complete and ready for consideration.
-
10 Aug 2026
Added to PlanIndex
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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.
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
-
26/1436/NMA Granted
3 Grenville Close London N3 1UF
Non-material amendments to planning permission reference 26/0029/HSE dated 28/03/26 for 'Single Storey rear infill extension, first floor side extension.' Amendments include changes to fenestration to front and rear elevations
Who's behind it
Company information only, from the register and Companies House
Agent on file, registered in Twickenham
11 applications on PlanIndex · across 3 councils
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
3 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 householder applications in a median of 56 days. More in our guide to how long planning decisions take.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
3 Grenville Close London N3 1UF
Non-material amendments to planning permission reference 26/0029/HSE dated 28/03/26 for 'Single Storey rear infill extension, first floor side extension.' Amendments include changes to fenestration to front and rear elevations
Granted Amendments Extension Windows or glazing 4 docsSmall domestic -
19 Hendon Avenue London N3 1UJ
1 X Copper Beech - fell, grind stump to a minimum depth of 300mm below ground level and replace with a copper beech (Fagus sylvatica 'Purpurea') in same location, due to significant structural decay and high risk of failure. Standing in T44 of Order (amended description)
Granted Trees 9 docs -
19 Hendon Avenue London N3 1UJ
79% historically approved · decision due ~19 May
Extension of existing swimming pool and new pool house following demolition of existing pool house
Awaiting decision Lawful development Extension Demolition 15 docs -
19 Hendon Avenue London N3 1UJ
79% historically approved · decision due ~21 Nov
Single storey side extensions to both sides. Single storey rear extension. Roof extension with rear dormer windows, 14no. front and 2no. side facing rooflights following the demolition of chimneys
Awaiting decision Lawful development Extension Loft or dormer +2 23 docsSmall domestic -
19 Hendon Avenue London N3 1UJ
Extension of existing swimming pool and new pool house following demolition of existing pool house
Decided Lawful development Extension Demolition 17 docs -
17A Dollis Avenue London N3 1UD
77% historically approved · decision due ~21 Jul
Single storey side and rear extension and side infill extension with 5no. rooflights and new levelled patio area with associated access steps. Conversion of the existing into habitable room, insertion of window to replace the garage door. Changes to fenestration
Awaiting decision Householder Extension Loft or dormer +1 7 docsSmall domestic
Other householder applications
In Barnet
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26/3249/HSE Awaiting decision
19 Rushdene Avenue Barnet EN4 8EN
New front vehicular access and hardstanding to provide off-street parking space. New retaining wall following demolition of the existing wall and raised planted beds
-
26/3235/HSE Awaiting decision
26 Mount Pleasant Barnet EN4 9HH
Replace existing flat roof at ground floor rear elevation with pitched roof and 2no. rooflights
-
26/3222/HSE Awaiting decision
46 Michleham Down London N12 7JN
Single storey side/rear extension with 3no. rooflights following demolition of the existing storage/utility structure. Changes to fenestration
-
26/3219/HSE Awaiting decision
53 Tudor Road Barnet EN5 5NW
First floor rear extension with front and rear rooflights. Roof extension over existing garage
-
26/3210/HSE Awaiting decision
47 Pattison Road London NW2 2HL
New front vehicular access to provide off-street parking. Removal of existing gate and shed, alterations to the existing front boundary wall and installation of close board fencing panels.