Planning application
HGY/2026/1526
23 Greenfield Drive, Hornsey, London, N2 9AF
Proposal
Certificate of Lawfulness (proposed) for porch extension with entrance door, sliding glass door to rear elevation, single rooflight to front main roof, and internal reconfigurations.
As published by the council, reference HGY/2026/1526
Timeline
Dates from the published record
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29 Jun 2026
Received by Haringey
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16 Jul 2026
Decision issued: Permitted Development
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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/2026/0517 Granted
24 Greenfield Drive, Hornsey, London, N2 9AF
Erection of a single-storey rear extension
-
HGY/2025/3597 Granted
One And A Half, Southern Road, Hornsey, London, N2 9LH
T1 - Hornbeam tree (10m) - reduce crown by approximately 3m and remove deadwood from crown. T2 - Hornbeam tree (8m) - reduce crown by approximately 4m and remove deadwood and ivy from crown. T3 - Holm Oak tree- reduce crown by approximately 3m and remove deadwood and ivy from crown. T4 - Holm Oak tree- reduce crown by approximately 3m and remove deadwood and ivy from crown. T5 - Holm Oak tree- reduce crown by approximately 3m and remove deadwood and ivy from crown.
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HGY/2026/0667 Awaiting decision
Flat C, 15 Southern Road, Hornsey, London, N2 9LH
Replacement of windows and a door on the front, rear and side elevation.
-
HGY/2026/0450 Granted
3 Shakespeare Gardens, Hornsey, London, N2 9LJ
Alterations to roof form and first floor to extend the existing gables to form eyebrow gable roof elements; formation of two dormers and the installation of two rooflights
-
HGY/2026/0782 Granted
18 Southern Road, Hornsey, London, N2 9LE
Demolition of the existing garage and ground floor WC and erection of single-storey rear extension. Enlargement existing first-floor rear window
-
HGY/2026/0372 Granted
6 Southern Road, Hornsey, London, N2 9LE
Installation of a ground-mounted external air conditioning condenser unit within the curtilage of the dwellinghouse
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).
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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).