Planning application
13 Copthall Drive London NW7 2ND
Works: Extension Loft or dormer 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
Part single, part two storey side and rear extension. Crown roof extension including side and rear dormer and 2no. front and side facing rooflights
As published by the council, reference 26/0155/HSE
Application record
- Reference
- 26/0155/HSE
- Type
- Householder Application
- Status
- Pending Consideration
- Received
- 15 Jan 2026
- Validated
- 15 Jan 2026
- Ward
- Mill Hill
- Postcode
- NW7 2ND
Timeline
Dates from the published record
-
15 Jan 2026
Received by Barnet
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 12 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 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, registered in London
29 applications on PlanIndex · across 7 councils · 67% 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
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.
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 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
-
10 Holmdene Avenue London NW7 2NA
95% historically approved · decision due ~17 Mar
Variation of condition 1 (Approved plans) of planning permission 25/2451/HSE dated 11/08/2025 for 'Single storey rear extension with 2no. rooflights and new patio area and access steps to garden. Conversion of existing garage into habitable space including increasing the roof ridge height, insertion of window to replace the garage door. Front porch extension. Increasing roof height of the existing study at the rear' Variation to include increasing the depth of proposed rear extension
Awaiting decision Conditions Extension Loft or dormer +2 5 docsSmall domestic -
3 Hillside Grove London NW7 2LS
95% historically approved · decision due ~24 Nov
Variation of condition 1 (Approved Plans) and 3 (Materials) pursuant to planning permission 24/3700/HSE dated 18/11/24 for `Part single, part two storey side and rear extension with 2no. rooflights. Conversion of the garage into habitable room, insertion of window to replace the garage door.` Variation to external finishing materials of front, rear and roof'
Awaiting decision Conditions Extension Loft or dormer +1 5 docs -
3 Hillside Grove London NW7 2LS
Part proposed and part retrospective application for: Part single, part two storey side and rear extension, conversion of the garage into habitable room, insertion of window to replace the garage door (retrospective). Proposed render to the front and rear elevation (proposed)
Granted Amendments Extension Windows or glazing 15 docs -
43 Glenmere Avenue London NW7 2LT
Single storey side and rear extension following demolition of the existing rear extension and timber shed
Granted Householder Extension Demolition 9 docsSmall domestic -
43 Glenmere Avenue London NW7 2LT
Roof extension involving hip to gable, rear dormer window with 3no. front facing rooflights and changes to first floor fenestration
Decided Lawful development Extension Loft or dormer +1 3 docs -
7 Holmdene Avenue London NW7 2LY
79% historically approved · decision due ~5 Aug
Submission of details of condition 7 (Tree Protection) of planning permission 26/1616/HSE dated 03/06/26
Decided Trees
Other householder applications
In Barnet
-
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