Planning application
55A Colindale Avenue London NW9 5EP
Works: Extension Loft or dormer Windows or glazing Small 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
Single storey rear extension. Roof extension involving rear dormer window and 1no. front facing rooflight
As published by the council, reference 25/5015/FUL
Application record
- Reference
- 25/5015/FUL
- Type
- Full Application
- Status
- Pending Decision
- Received
- 15 Dec 2025
- Validated
- 19 Dec 2025
- Ward
- Colindale South
- Postcode
- NW9 5EP
Timeline
Dates from the published record
-
15 Dec 2025
Received by Barnet
-
19 Dec 2025
Validated
Checked as complete and ready for consideration.
-
10 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 February 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, an architecture practice
69 applications on PlanIndex · across 18 councils · 64% 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
11 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 full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
-
5 Ajax Court Colindale Avenue London NW9 5EU
61% historically approved · decision due ~15 Jul
New front hardstanding and vehicular access to provide off-street parking. Associated landscaping work
Awaiting decision Full applications 7 docs -
71 Colindale Avenue London NW9 5HB
79% historically approved · decision due ~29 Jul
Roof extension involving rear dormer window. Erection of a rear outbuilding with 4no. rooflights
Awaiting decision Lawful development Extension Loft or dormer +1 2 docs -
5 Cecil Road London NW9 5EL
Single storey rear extension with a proposed depth of 4.00 metres, maximum height of 3.20 metres and eaves height of 2.90 metres. Following demolition of existing conservatory.
Granted Prior approval Extension Demolition 7 docsSmall domestic -
21 Colindale Avenue London NW9 5DS
Erection of a single storey rear extension and reconfiguration of the internal layout of the commercial unit, including partial alteration of the existing single storey roof to form two internal courtyards with associated flank door openings and 2no rooflights
Granted Full applications Extension Loft or dormer 12 docsSmall domestic -
Communicable Disease Surveillance Centre 61 Colindale Avenue London NW9 5EQ
79% historically approved · decision due ~31 Aug
1 x Wild Cherry (applicants ref. T20) - Prune to clear structures by 1m. Prune crown to clear wooden beam structure by entrance to building and lamp. Standing in Area A1 of Tree Preservation Order. 1 x Wild Cherry (applicants ref. T23) - Fell to just above ground level. Standing in Area A1 of Tree Preservation Order. 1 x Japanese Flowering Cherry (applicants ref. T24) - Prune to clear structure by 1m. Standing in Area A1 of Tree Preservation Order. 1 x Japanese Flowering Cherry (applicants ref. T25) - Prune to clear structure 1m. Prune crown to clear wooden beam structure. Standing in Area A1 of Tree Preservation Order. 1 x Japanese Flowering Cherry (applicants ref. T31) - Remove broken/hanging branch. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T58) - Fell to ground level, leave 1m stump and stack cuttings near stump for biodiversity value. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T60) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T61) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T62) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Silver Birch (applicants ref. T65) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Weeping Willow (applicants ref. T82) - Prune to clear structure by 1m. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T95) - Clear vegetation to allow access to basal areas of trees for inspection purposes. Standing in Area A1 of Tree Preservation Order.
Awaiting decision Trees -
Communicable Disease Surveillance Centre 61 Colindale Avenue London NW9 5EQ
79% historically approved · decision due ~28 Sep
2 x Willow (applicants ref. T1, T2) - Remove snapped branches. Standing in Area A1 of Tree Preservation Order. Exempt Work
Awaiting decision Trees
Other full applications applications
In Barnet
-
26/3199/FUL Awaiting decision
494 Finchley Road London NW11 8DE
Demolition of the existing dwelling and erection of a two storey building over basement car park with rooms in the roofspace to provide 6no. self-contained residential dwellings. Associated amenity space, cycle stores and refuse/recycling storage
-
26/3200/FUL Awaiting decision
289 Regents Park Road London N3 3JY
Removal of front extension. Single storey side extension including new walls to replace existing boundary fences. (Part Retrospective)
-
26/3205/FUL Awaiting decision
The Knoll Highwood Hill London NW7 4ET
Demolition of the existing dwelling and erection of a new two storey dwelling with rooms in the roofspace. Associated bike storage
-
26/3204/FUL Awaiting decision
136 Station Road London N3 2SG
Conversion of existing property into 3no. self-contained flats including: Part single, part two storey rear extension; Roof extension including hip to gable with 1no. rear dormer window, 3no. front facing rooflights and 1no. gable window
-
26/3195/FUL Awaiting decision
128 - 130 Woodfield Drive Barnet EN4 8PB
Creation of new vehicle hardstanding and vehicular access to provide off-street parking, with associated retaining walls, steps, railings, landscaping and electric vehicle charging points to both properties. (Part Retrospective Application)