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Planning application

15A Cholmeley Park, Hornsey, London, N6 5ET

Granted Haringey HGY/2026/0469 Lawful development: Proposed use

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.

    Decided 23 Jan 2026 Amendments
  • 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

    Decided 13 Oct 2025 Trees

Timeline

Dates from the published record

  1. 20 Feb 2026

    Received by Haringey

  2. 10 Apr 2026

    Decision issued: Approve

  3. 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 documents

What 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

    HGY/2025/3338 Submitted 12 Dec 2025 50 yards away

    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 docs
    Small domestic
  • 15A Cholmeley Park, Hornsey, London, N6 5ET

    HGY/2025/2347 Submitted 1 Sep 2025 50 yards away

    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

    HGY/2026/0148 Submitted 19 Jan 2026 50 yards away

    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

    HGY/2025/3442 Submitted 10 Dec 2025 50 yards away

    T1 Monterrey Cypress - reduce from 10m to 7m remove dead

    Granted Trees 3 docs
  • 7, Cholmeley Park, London, N6 5ET

    HGY/2021/2164 Submitted 26 Jul 2021 50 yards away

    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 docs
    Small domestic
  • 14 Cholmeley Park, Hornsey, London, N6 5EU

    HGY/2023/1003 Submitted 11 Apr 2023 50 yards away

    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

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.

    Received 20 Jul, published by the council 10 Aug 2026 Lawful development
  • 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).

    Received 18 May, published by the council 24 Jul 2026 Lawful development
  • 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.

    Received 7 Sep, published by the council 17 Sep 2026 Lawful development
  • 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)

    Received 10 Jul, published by the council 24 Jul 2026 Lawful development
  • 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.

    Received 4 Sep, published by the council 7 Sep 2026 Lawful development