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Planning application

35 Rathcoole Avenue, Hornsey, London, N8 9LY

Granted Haringey HGY/2026/2179 Lawful development: Proposed use

Works: Extension

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Certificate of Lawfulness (Proposed Use): Outrigger roof extension.

As published by the council, reference HGY/2026/2179

Application record

Reference
HGY/2026/2179
Type
Lawful development: Proposed use
Status
Decision Made
Decision
Granted As published: Permitted Development
Received
31 Jul 2026
Validated
31 Jul 2026
Decided
28 Aug 2026
Ward
Hornsey
Decision by
Delegated Decision
Postcode
N8 9LY

Site history

Applications at this address on the Haringey register

This site has had 2 applications since 2026: 2 approved, 0 refused.

  • HGY/2026/1784 Granted

    35 Rathcoole Avenue, Hornsey, London, N8 9LY

    Replacement of the existing single storey rear extension and replacement of the rear first floor double doors with windows and the removal of the rear steps from the first floor. AMENDED DESCRIPTION

    Decided 24 Sep 2026 Householder

Timeline

Dates from the published record

  1. 31 Jul 2026

    Received by Haringey

  2. 28 Aug 2026

    Decision issued: Permitted Development

  3. 31 Aug 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

5 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.

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Open the documents

What this grant of permission means

Haringey granted permission on 28 August 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

  • 19 Rathcoole Avenue, Hornsey, London, N8 9LY

    HGY/2026/2032 Submitted 17 Jul 2026 50 yards away

    91% historically approved · decision due ~11 Sep

    Replacement of existing timber windows with new double-glazed uPVC windows to front, side and rear elevations and replacement of existing timber rear doors to flats with new uPVC doors.

    Awaiting decision Householder New dwelling Windows or glazing 10 docs
    Domestic

  • 35 Rathcoole Avenue, Hornsey, London, N8 9LY

    HGY/2026/1784 Submitted 24 Jun 2026 50 yards away

    Replacement of the existing single storey rear extension and replacement of the rear first floor double doors with windows and the removal of the rear steps from the first floor. AMENDED DESCRIPTION

    Granted Householder Extension Windows or glazing 6 docs
    Small domestic

  • 45 Rathcoole Avenue, Hornsey, London, N8 9LY

    HGY/2026/2033 Submitted 20 Aug 2026 50 yards away

    91% historically approved · decision due ~15 Oct

    Replacement of existing windows with new double-glazed uPVC windows to front, side and rear elevations, and replacement of existing timber rear doors to flats with new uPVC doors.

    Awaiting decision Householder New dwelling Windows or glazing 17 docs
    Domestic

  • Flat A, 1 Rathcoole Avenue, Hornsey, London, N8 9LY

    HGY/2024/1229 Submitted 9 May 2024 50 yards away

    Approval of condition 1 (Materials) ref: HGY/2023/1449

    Withdrawn Conditions 4 docs

  • Flat A, 8 Rathcoole Avenue, Hornsey, London, N8 9NA

    HGY/2024/3180 Submitted 21 Nov 2024 50 yards away

    Rear roof extension with solar panels, front roof lights, replacement rear door and all associated works

    Granted Full applications Extension Loft or dormer 9 docs

  • 56b Rathcoole Avenue, Hornsey, London, N8 9NA

    HGY/2026/0481 Submitted 13 Apr 2026 50 yards away

    Non-material amendment following a grant of planning permission HGY/2025/3420 to amend the site address on the planning consent from Flat 56a to Flat 56b Rathcoole Avenue N8 9NA.

    Granted Amendments 7 docs

In Haringey

  • HGY/2026/2285 Granted

    13 Woollaston Road, Hornsey, London, N4 1SD

    Certificate of Lawfulness (proposed) for loft conversion with rear dormer extension.

    Received 14 Aug, published by the council 22 Aug 2026 Lawful development
  • HGY/2026/2357 Granted

    40 Falmer Road, Tottenham, London, N15 5BA

    Lawful development Certification for proposed erection of rear roof extension and insertion of front rooflight

    Received 21 Aug, published by the council 4 Oct 2026 Lawful development
  • HGY/2026/2692 Granted

    125 High Cross Road, Tottenham, London, N17 9NR

    Lawful development: Proposed use for change of use within Class E to a Nail shop (Class E(c)(iii))

    Received 29 Sep, published by the council 4 Oct 2026 Lawful development
  • HGY/2026/2637 Granted

    30 Gloucester Road, Tottenham, London, N17 6DH

    Lawful development: Proposed use. Loft conversion including 2x roof lights and L-shaped box dormer to the rear roof slopes with materials to match existing materials on main roof

    Received 21 Sep, published by the council 4 Oct 2026 Lawful development
  • HGY/2026/2420 Granted

    50 St Loys Road, Tottenham, London, N17 6UD

    Certificate of Lawfulness: Proposed erection of an L-shaped rear dormer including the insertion of 2nos. front rooflights.

    Received 28 Aug, published by the council 7 Sep 2026 Lawful development