Planning application
23 Waltham Avenue, London, NW9 9SH
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
Proposed two-storey side to rear extension, raised patio, hip to gable-end roof extension, rear dormer, 2x front rooflights, front porch extension and outbuilding in rear garden of dwellinghouse
As published by the council, reference 25/3093
Application record
- Reference
- 25/3093
- Type
- Householder
- Status
- Decided
- Decision
- Permission Granted
- Received
- 4 Nov 2025
- Validated
- 4 Nov 2025
- Decided
- 29 Dec 2025
- Ward
- Queensbury
- Decision by
- Delegated Team Manager
- Postcode
- NW9 9SH
Timeline
Dates from the published record
-
4 Nov 2025
Received by Brent
-
29 Dec 2025
Decision issued: Permission Granted
-
11 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file
104 applications on PlanIndex · across 7 councils · 75% 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 this grant of permission means
Brent granted permission on 29 December 2025, 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 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
-
29 Waltham Avenue, London, NW9 9SH
Proposed single storey outbuilding to the rear garden of the dwellinghouse.
Granted Householder 7 docsSmall domestic -
9 Waltham Avenue, London, NW9 9SH
Certificate of lawfulness for proposed single storey rear extension and conversion of side garage into a habitable room with raised roof height and replacement of garage door with window to the front elevation of the dwellinghouse.
Refused Lawful development Extension Windows or glazing 9 docsSmall domestic -
9 Waltham Avenue, London, NW9 9SH
Proposed single storey rear extension, conversion of garage into habitable room with replacement of garage door with window to front elevation and alterations to garage roof, hip to gable extension, rear dormer window with 2x front rooflights, installation of a new side window and installation of window to the side roof slope to the dwellinghouse.
Granted Householder Extension Loft or dormer +1 13 docsSmall domestic -
9 Waltham Avenue, London, NW9 9SH
Proposed single storey rear extension and conversion of side garage into a habitable room with raised roof height and replacement of garage door with window to the front elevation of the dwellinghouse.
Granted Lawful development Extension Windows or glazing 9 docsSmall domestic -
37 Waltham Avenue, London, NW9 9SH
79% historically approved · decision due ~26 Aug
Demolition of existing side garage and utility and proposed single storey side and rear extension...
Decided Extension DemolitionSmall domestic -
106 Valley Drive, London, NW9 9NS
Retention of two storey side and rear extension, garage conversion, loft conversion with rear dormer window to dwellinghouse.
Refused Householder Extension Loft or dormer +1 12 docsSmall domestic
Other householder applications
In Brent
-
26/0944 Refused
11 Briar Road, Harrow, HA3 0DP
Retention of two-storey side extension with associated front balcony; conversion of attached garage to habitable room; part single-storey side infill extension; single-storey rear extension with raised patio; installation of 3x side rooflights & 1x rear rooflight; replacement of roof-tiles, front door, external windows, garage door and chimney stack; installation of external lighting to the front elevation; and installation of 4x retractable bollards, hardstanding, associated soft-landscaping, drainage channels and soakaway within forecourt of dwellinghouse (amended description)
-
26/0945 Granted
11 Briar Road, Harrow, HA3 0DP
Proposed two-storey side extension with associated front balcony; conversion of attached garage to habitable room; part single-storey side infill extension; single-storey rear extension with raised patio; installation of 3x side rooflights & 2x rear rooflights; replacement of roof-tiles; retention of front door; alterations to external windows; replacement of uPVC garage door with timber garage door; removal of external lighting on front elevation; reinstatement of chimney stack; and installation of hardstanding, associated soft landscaping, drainage channels and soakaway within forecourt of dwellinghouse (amended description)
-
26/0859 Granted
56 Okehampton Road, London, NW10 3EP
Proposed demolition of side garage, erection of two storey side extension, replacement of rear doors to ground floor, replacement of 4x windows and removal of 1x window and 1x door to side elevation, new front boundary wall and bin storage to front garden.
-
26/1190 Refused
244 Willesden Lane, Willesden, London, NW2 5RE
Demolition of conservatory and shed, and erection of a single-storey side infill and rear extension, installation of a door to the side elevation and erection of a new masonry side boundary wall to the dwellinghouse.
-
26/0867 Refused
14 Mount Pleasant Road, London, NW10 3EL
Proposed erection of boundary wall, a bin store, pedestrian and vehicular access gates, associated hard and soft landscaping to front garden (revised description)