Planning application
23 Ferncroft Avenue London N12 0LN
Works: Extension Loft or dormer Demolition Small domestic
Read from the description, not a valuation. How we read the register
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Erection of a granny annexe to rear garden with solar panels and rooflights following demolition of the existing garage. Enclosure of the existing front porch. Alterations to the existing front garden levels and boundary treatment. Installation of safety balustrades to existing external stairs
As published by the council, reference 26/0664/HSE
Application record
- Reference
- 26/0664/HSE
- Type
- Householder Application
- Status
- Refused
- Decision
- Refuse
- Received
- 20 Feb 2026
- Validated
- 20 Feb 2026
- Decided
- 17 Apr 2026
- Ward
- Friern Barnet
- Decision by
- Delegated Decision
- Postcode
- N12 0LN
Timeline
Dates from the published record
-
20 Feb 2026
Received by Barnet
-
17 Apr 2026
Decision issued: Refuse
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice
27 applications on PlanIndex · across 8 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
8 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 refusal means
The process from here
The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.
Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.
About householder applications
How this application type works
Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.
Nearby applications
Within 500 metres
-
9 Woodleigh Avenue London N12 0LJ
Single storey ground floor rear infill extensions with new raised decking area and associated access steps. Removal of the first floor bay window. Conversion of the garage in habitable room, insertion of window to replace garage door [Amended Description]
Granted Householder Extension Windows or glazing 7 docsSmall domestic -
Flat 2 2 Ashurst Road London N12 9AX
Roof extension with rear dormer with juliette balcony, outrigger dormer, 2no. side (1 to each side) and 3no. front facing rooflights
Refused Full applications Extension Loft or dormer 18 docs -
The Triumph 274 Summers Lane London N12 0LE
57% historically approved · decision due ~18 Feb
Change of use of ground floor from commercial use Class E(a) Residential Use (Class C3) to create 3no. self-contained dwellings with associated cycle storage and refuse and recycling storage
Awaiting decision Prior approval 8 docs -
The Triumph Summers Lane London N12 0LE
Submission of details of condition 7 (Noise Mitigation) pursuant to planning permission 25/5171/PNE dated 18/02/2026
Granted Conditions 4 docs -
41 Lyndhurst Avenue London N12 0LX
Single storey rear extension
Decided Lawful development Extension 4 docsSmall domestic -
20 Ashurst Road London N12 9AX
Roof extension involving removal and replacement of the existing rear dormer and insertion of 3no. front facing rooflights
Decided Lawful development Extension Loft or dormer 5 docs
Other householder applications
In Barnet
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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.
-
26/3211/HSE Awaiting decision
25 The Ridgeway London N11 3LG
Single storey rear extension with 3no. rooflights following the demolition of existing conservatory