Planning application
20 Clifton Avenue London N3 1BN
Works: Extension Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Roof extension involving hip to gable with rear dormer windows and 4no. front facing rooflights
As published by the council, reference 26/2688/192
Application record
- Reference
- 26/2688/192
- Status
- Lawful
- Received
- 20 Jul 2026
- Validated
- 20 Jul 2026
- Postcode
- N3 1BN
Timeline
Dates from the published record
-
20 Jul 2026
Received by Barnet
-
29 Jul 2026
Added to PlanIndex
-
7 Aug 2026
Status changed to Lawful
Previously Pending Consideration.
-
Decision
Awaiting decision
Decision expected by 14 September 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 43 days over the applications it decided in the last year.
What happens while it is decided
This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet's median decision took 43 days. More in our guide to how long planning decisions take.
About this record
The published feed does not state which type of application this is; the register entry on Barnet's portal will say. Our guide explains the common types.
Nearby applications
Within 500 metres
-
26 Clifton Avenue London N3 1BN
69% historically approved · decision due ~24 Mar
Non material amendment to planning permission 22/4172/HSE dated 25/10/2022 for 'Single storey rear extension following removal of existing bay window. Roof extension involving hip to gable, rear dormer, and 4no front facing rooflights'. Amendments includes minor alterations to fenestration and rooflight provision
Awaiting decision Amendments Extension Loft or dormer +1 12 docsSmall domestic -
22 Dollis Park London N3 1HN
95% historically approved · decision due ~19 Jun
Variation of condition 1 (Approved plans) of planning permission 26/0274/FUL dated 14.04.2026 for Conversion of existing single family dwellinghouse into 2no. self-contained flats including single storey side infill extension. Associated amenity space, refuse and cycle storage. Variation to include alterations to proposed layout of Flat B, the kitchen/living room to be located on first floor and bedroom on the second floor
Awaiting decision Conditions New dwelling Extension 7 docsSmall domestic -
22 Dollis Park London N3 1HN
61% historically approved · decision due ~23 Mar
Conversion of existing single family dwellinghouse into 2no. self-contained flats including single storey side infill extension. Associated amenity space, refuse and cycle storage
Awaiting decision Full applications New dwelling Extension 13 docsSmall domestic -
The Cottage 38A Dollis Park London N3 1BP
Non material amendment to planning permission 25/1935/HSE dated 09/05/2025 for `Roof extension involving side dormer window and 2no. rooflight`. Amendments to front elevation introducing feature brickwork detailing around the window
Granted Amendments Extension Loft or dormer +1 3 docs -
63 Church Crescent London N3 1BL
Roof extension involving hip to gable and rear dormer window
Granted Lawful development Extension Loft or dormer +1 8 docs -
63 Church Crescent London N3 1BL
Single storey side and rear extension following demolition of the existing garage
Granted Householder Extension Demolition 11 docsSmall domestic