Planning application
P2025/3436/COL
8 Cornwallis Square, London, N19 4LY
Proposal
Front roof slope insertion of rooflight not to exceed 150mm high; rear roof slope creation of flat dormer roof not to exceed 40m3, set back from eaves by minimum 200mm, and not to exceed existing ridge height; ground floor rear extension not to exceed 3m length, flat roof/eaves not to exceed 3m high.
As published by the council, reference P2025/3436/COL
Timeline
Dates from the published record
-
8 Dec 2025
Received by Islington
-
15 Dec 2025
Validated
Checked as complete and ready for consideration.
-
25 Jul 2026
Added to PlanIndex
What withdrawal means
The process from here
The applicant withdrew this application before the council decided it, so it carries no planning weight and no fee refund is automatic. Withdrawal often follows officer feedback that a refusal was likely.
The applicant is free to submit a revised application at any time, and many withdrawn schemes return in amended form, so the site is worth watching if the proposal affected you.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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P2026/1370/FUL Granted
8 Cornwallis Square, London, N19 4LY
Installation of externally-mounted flue to rear elevation.
-
P2026/0215/FUL Granted
8 Cornwallis Square, London, N19 4LY
Erection of ground floor single storey rear extension, loft conversion and dormer to rear roof slope, replacement of existing uPVC windows with triple-glazed windows
-
P2026/0288/COL Withdrawn
89 Marlborough Road, London, N19 4PA
Certificate of lawfulness (proposed) for addition of a second storey to existing rear outrigger.
-
P2026/1214/FUL Granted
Ground Floor Flat, 101 Marlborough Road, London, N19 4PA
Single storey side extension to ground floor flat and replacement front bay sash window.
-
P2024/2589/FUL Granted
87 Marlborough Road, London, N19 4PA
Erection of mansard roof extension.
-
P2026/0513/FUL Granted
47 Davenant Road, London, N19 3NW
Erection of single storey rear extension (following part demolition of existing) and rebuilding section of garden wall to No. 49
Other lawful development applications
In Islington
-
P2026/1005/COL Granted
505A Hornsey Road, London
Certificate of Lawfulness (Existing) for the use of the first, second and third floors as a 6-room large HMO (Use Class Sui Generis)
-
P2026/1434/COL Granted
9 Alwyne Square, London, N1 2JX
Installation of 3 rooflights in the rear roof slope.
-
P2026/0980/COL Granted
4A Cowcross Street, London, EC1M 6DR
Certificate of Lawful (Existing) development for the use of the first, second and third floors as three self-contained studio flats (Class C3)
-
P2026/1324/COL Granted
Gough House, 1 Windsor Street, London, N1 8QA
Certificate of Lawfulness (proposed) for the installation of low-level play equipment, seating, planter with trellis, grass matting and a self-closing child-safety gate fixed to existing metal hoop-top fencing.
-
P2026/1943/COL Awaiting decision
49, Linton Street, London, N1 7AN
Certificate of Lawfulness (Proposed) for the construction of a garden studio/outbuilding in rear garden.