Planning application
HGY/2026/0024
90 Duckett Road, Hornsey, London, N4 1BW
Proposal
Certificate of lawfulness for existing use of property as HMO (C4) for 6 occupants.
As published by the council, reference HGY/2026/0024
Timeline
Dates from the published record
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7 Jan 2026
Received by Haringey
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4 Mar 2026
Decision issued: Approve
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24 Jul 2026
Added to PlanIndex
What 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 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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HGY/2025/3143 Granted
First Floor Flat, 97 Mattison Road, Hornsey, London, N4 1BQ
Loft extension including the erection of a rear dormer, front rooflights and rear roof terrace.
-
HGY/2025/2571 Awaiting decision
Harringay Seventh Day Adventist Church, Cavendish Road, Hornsey, London, N4 1RS
Change of Use from F1 (F - Public Worship or Religious Institution) to F2 (Community Use)
-
HGY/2026/0480 Awaiting decision
Harringay Seventh Day Adventist Church, Cavendish Road, Hornsey, London, N4 1RS
Change of use of existing church/community centre to office use at ground and lower ground floors, with extension of upper floors to form 1x self-contained 2-bedroom residential unit, including associated internal and external alterations.
-
HGY/2025/3051 Granted
100 Mattison Road, Hornsey, London, N4 1BE
Erection of a single storey rear wraparound extension to the ground floor flat and related works.
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HGY/2024/2482 Granted
10 Duckett Road, Hornsey, London, N4 1BN
Replacement of existing timber windows and rear door with uPVC units
-
HGY/2023/0052 Granted
9 Duckett Road, Hornsey, London, N4 1BJ
Replacement of two existing ground floor Windows on the rear elevation with glazed doors; the replacement of one existing ground floor Window on the side elevation with a glazed fixed panel; and the addition of a cast iron staircase to rear elevation.
Other lawful development applications
In Haringey
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HGY/2026/2104 Granted
17 Sperling Road, Tottenham, London, N17 6UQ
Certificate of lawfulness for proposed use: Loft conversion with erection of rear L-shaped dormer and insertion of 2no. front rooflights.
-
HGY/2026/1307 Granted
49 Lordsmead Road, Tottenham, London, N17 6EX
Certificate of lawfulness for the existing use of the property as five separate self-contained flats.
-
HGY/2026/1885 Granted
6, Grainger Road, London, N22 5LT
Certificate of Lawfulness: Proposed alterations to the roof comprising the installation of 3no. rooflights (2no. front facing and 1no. rear facing).
-
HGY/2026/1375 Granted
Flats 1, 2, & 3 149 Crescent Road, Wood Green, London, N22 7RU
Certificate of lawfulness for the existing use of the property as 3 self-contained flats (comprising of ground floor 2 bed, first floor 2 bed, second floor 1 bed) for more than 4 years.
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HGY/2026/1409 Granted
492 Archway Road, Hornsey, London, N6 4NA
Certificate of Lawfulness Existing Use. Use of lower ground floor as two flats (Use Class C3).