Planning application
9 Park Avenue London NW11 7SL
Works: Extension Loft or dormer Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Single storey rear extension with 1no. rooflight. Alterations to roof above kitchen. External level drop down with new steps. New terrace area with new garden retaining wall
As published by the council, reference 25/4912/HSE
Application record
- Reference
- 25/4912/HSE
- Type
- Householder Application
- Status
- Approved subject to conditions
- Decision
- Approve subject to conditions
- Received
- 8 Dec 2025
- Validated
- 8 Dec 2025
- Decided
- 2 Feb 2026
- Ward
- Childs Hill
- Decision by
- Delegated Decision
- Postcode
- NW11 7SL
Timeline
Dates from the published record
-
8 Dec 2025
Received by Barnet
-
2 Feb 2026
Decision issued: Approve subject to conditions
-
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 registered in London
26 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
24 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 a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
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
-
3 Park Avenue London NW11 7SL
61% historically approved · decision due ~8 Sep
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
Awaiting decision Full applications DemolitionDomestic -
25 Park Avenue London NW11 7SL
77% historically approved · decision due ~11 Sep
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
Awaiting decision Householder Extension Loft or dormer +1 20 docsDomestic -
16 Park Avenue London NW11 7SJ
Roof extension involving hip to gable with rear dormer window. Single storey side and rear extension insertion of 1no. rooflight, new front hardstanding to driveway and walkway with new pedestrian gate, new bin store to front (Approved under 24/3493/HSE)
Withdrawn Lawful development Extension Loft or dormer +1 12 docsSmall domestic -
31 The Park London NW11 7ST
77% historically approved · decision due ~29 Jul
Single storey rear extension and pergola
Awaiting decision Householder Extension 8 docsSmall domestic -
25 Park Avenue London NW11 7SL
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)
Decided Lawful development Extension Loft or dormer +1 23 docs -
23 The Park London NW11 7ST
77% historically approved · decision due ~30 Jan
Removal of chimney stack, installation of 2no. air conditioning units on first floor rear elevation. Replacement of 2no. windows on side elevation. Erection of front boundary wall with railings and 2no. gates, fencing on side elevation
Awaiting decision Householder Windows or glazing 7 docsSmall domestic
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