Planning application
15A Cholmeley Park, Hornsey, London, N6 5ET
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Certificate of lawfulness for proposed use or development, to carry out internal works to the property to remove unauthorised annexe flat, to revert the use solely to as a one single family dwellinghouse (C3).
As published by the council, reference HGY/2026/0469
Application record
- Reference
- HGY/2026/0469
- Type
- Lawful development: Proposed use
- Status
- Decision Made
- Decision
- Granted As published: Approve
- Received
- 20 Feb 2026
- Validated
- 20 Feb 2026
- Decided
- 10 Apr 2026
- Ward
- Highgate
- Decision by
- Delegated Decision
- Postcode
- N6 5ET
Site history
Applications at this address on the Haringey register
This site has had 3 applications since 2025: 3 approved, 0 refused.
-
HGY/2025/3338 Granted
15a, Cholmeley Park, Hornsey, London, N6 5ET
Variation of condition 2 (approved plans) of planning permission HGY/2023/2705 for Demolition of existing rear extension, erection of single-storey rear extension, enlargement of existing side extension, replacement of rear dormer roof extension to main roof, replacement of windows in front elevation to match existing in appearance, replacement of front door, changes to fenestration in side and rear elevations. Proposed changes to the fenestration on the side/rear elevations, and alterations to design and height of the side extension. Alterations to rear elevation treatment of rear dormer, increase in height of rear dormer by 0.2 metres.
-
HGY/2025/2347 Granted
15A Cholmeley Park, Hornsey, London, N6 5ET
T1 Lombardy poplar - re-pollard to previous reduction points T2 Beech - reduce from 14m to 11m and shape accordingly T3 Beech - reduce from 12m to 9m and reshape
Timeline
Dates from the published record
-
20 Feb 2026
Received by Haringey
-
10 Apr 2026
Decision issued: Approve
-
24 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
8 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.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Haringey granted permission on 10 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
15a, Cholmeley Park, Hornsey, London, N6 5ET
Variation of condition 2 (approved plans) of planning permission HGY/2023/2705 for Demolition of existing rear extension, erection of single-storey rear extension, enlargement of existing side extension, replacement of rear dormer roof extension to main roof, replacement of windows in front elevation to match existing in appearance, replacement of front door, changes to fenestration in side and rear elevations. Proposed changes to the fenestration on the side/rear elevations, and alterations to design and height of the side extension. Alterations to rear elevation treatment of rear dormer, increase in height of rear dormer by 0.2 metres.
Granted Amendments Extension Loft or dormer +3 6 docsSmall domestic -
15A Cholmeley Park, Hornsey, London, N6 5ET
T1 Lombardy poplar - re-pollard to previous reduction points T2 Beech - reduce from 14m to 11m and shape accordingly T3 Beech - reduce from 12m to 9m and reshape
Granted Trees 3 docs -
Annexe 15a, Cholmeley Park, Hornsey, London, N6 5ET
T1, T1 T3 Leyland cypress - remove and stump grind. (Trees form part of an old hedge) client plans ro remove overgrown trees and replant suitable hedge
Granted Trees 5 docs -
Annexe 15a, Cholmeley Park, Hornsey, London, N6 5ET
T1 Monterrey Cypress - reduce from 10m to 7m remove dead
Granted Trees 3 docs -
7, Cholmeley Park, London, N6 5ET
Erection of single storey rear extension (following demolition of conservatory) with associated raised terrace and boundary treatment; erection of front bin store and bike stand in association with re-landscaping; erection of rear store; and replacement and repositioning of side window
Granted Full applications Extension Demolition +1 7 docsSmall domestic -
14 Cholmeley Park, Hornsey, London, N6 5EU
G1 – x2 Plum Trees – Re-reduce back to previous reduction points by approx 2m and shape. This is to maintain the trees at their previously reduced size.
Granted Trees 3 docs
Other lawful development applications
In Haringey
-
HGY/2026/2042 Granted
Flat B, 101 Talbot Road, Hornsey, London, N6 4QX
Certificate of Lawfulness (proposed) for replacement of existing first-floor front elevation windows with new like-for-like timber double-glazed windows.
-
HGY/2026/1396 Granted
15 Pellatt Grove, Wood Green, London, N22 5NP
Certificate of lawfulness for the existing use of the property as a 6-bedroom House in Multiple Occupation (HMO) for up to six occupants (Class C4 use).
-
HGY/2026/2471 Awaiting decision
20 Bancroft Avenue, Hornsey, London, N2 0AS
Lawful development: Proposed use. erection of a new rear-side dormer extension, together with the installation of four front rooflights and two rear rooflights.
-
HGY/2026/1951 Granted
105 Alexandra Road, Wood Green, London, N8 0LG
Certificate of Lawfulness (existing) for continued use of property as two flats (C3)
-
HGY/2026/2416 Awaiting decision
Vincent House, 1A Vincent Road, Tottenham, London, N15 3QA
Certificate of Lawfulness: Existing use of the property as six self-contained flats.