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Planning application

26 Collingwood Avenue, Hornsey, London, N10 3ED

Granted Haringey HGY/2026/0587 Non-Material Amendment

Works: Extension Loft or dormer Windows or glazing

Relates to HGY/2025/2421

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

Proposal

Non-Material Amendment application following a grant of planning permission HGY/2025/2421 in relation to the alteration to the line of the wall of the front part of the extension adjacent to the boundary with No.24; removal of the external door to the front part of the extension; a change to the shape of the roof of the extension from a shallow curve to a shallow pitch shape; the addition of 1x small rooflight over the utility room; changes to the dormer fenestration to windows omitting the Juliet balcony.

As published by the council, reference HGY/2026/0587

Application record

Reference
HGY/2026/0587
Type
Non-Material Amendment
Status
Decision Made
Decision
Granted As published: Approve
Received
2 Mar 2026
Validated
2 Mar 2026
Decided
30 Mar 2026
Ward
Fortis Green
Decision by
Delegated Decision
Postcode
N10 3ED

Site history

Applications at this address on the Haringey register

This site has had 2 applications since 2025: 2 approved, 0 refused.

  • HGY/2025/2421 Granted

    26 Collingwood Avenue, Hornsey, London, N10 3ED

    Enlargement and alterations to existing single storey ground floor extension to the rear and flank of the house; Enlargement and alterations to the existing rear roof dormer and rear roof; Associated internal and external alterations including the alteration of layout and number of rooflights.

    Decided 25 Nov 2025 Householder

Timeline

Dates from the published record

  1. 2 Mar 2026

    Received by Haringey

  2. 30 Mar 2026

    Decision issued: Approve

  3. 24 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • HGY/2025/2421 Granted

    26 Collingwood Avenue, Hornsey, London, N10 3ED

    Enlargement and alterations to existing single storey ground floor extension to the rear and flank of the house; Enlargement and alterations to the existing rear roof dormer and rear roof; Associated internal and external alterations including the alteration of layout and number of rooflights.

    Decided 25 Nov 2025 Householder

Documents

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

16 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 30 March 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 amendment applications

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 26 Collingwood Avenue, Hornsey, London, N10 3ED

    HGY/2025/2421 Submitted 8 Sep 2025 50 yards away

    Enlargement and alterations to existing single storey ground floor extension to the rear and flank of the house; Enlargement and alterations to the existing rear roof dormer and rear roof; Associated internal and external alterations including the alteration of layout and number of rooflights.

    Granted Householder Extension Loft or dormer 26 docs
    Small domestic

  • 10 Collingwood Avenue, Hornsey, London, N10 3ED

    HGY/2026/2490 Submitted 7 Sep 2026 50 yards away

    T1- large Yew tree in the rear garden to reduce by 1m all over and crown lift 3m remove deadwood

    Granted Trees 4 docs

  • 46, Collingwood Avenue, London, N10 3ED

    CON/2021/0477 Submitted 20 Sep 2021 50 yards away

    Removal of conifer from front garden

    Granted Trees 3 docs

  • 44 Collingwood Avenue, Hornsey, London, N10 3ED

    HGY/2025/2624 Submitted 29 Sep 2025 50 yards away

    Erection of a ground floor rear side infill

    Granted Householder Extension 10 docs
    Domestic

  • 22 Collingwood Avenue, Hornsey, London, N10 3ED

    HGY/2026/1442 Submitted 21 May 2026 50 yards away

    T1 -Pear tree in garden of number 24 - crown reduction of approximately 3m on all aspects of tree. Removal of climbing plant and Ivy from tree, prune back branches overhanging garden of number 22 back to boundary. T2-Apple tree in garden of number 24- crown reduction of approximately 3m. T3-Neighbours Yew tree- prune back close to boundary whilst maintain green foliage. T4- Bay tree - prune back small diameter overhanging branches by up to approximately 40cm.

    Granted Trees 7 docs

  • 38, Collingwood Avenue, London, N10 3ED

    HGY/2023/0647 Submitted 6 Mar 2023 50 yards away

    T1 Sycamore (identified with * on the plan) - located NE corner of garden at 38 Collingwood Avenue: trim back re-growths to previous cut points on the upper branches only (i.e. re-growths above the red line in the enclosed photo). Works to be carried out before the tree commences growth this spring. Reason: shading of garden at 35 Leaside Avenue in the afternoons.

    Granted Trees 4 docs

In Haringey

  • HGY/2026/1571 Granted

    2 Addington Road, Hornsey, London, N4 4RP

    Variation of condition (2) of planning premission ref: HGY/2026/0255 (approved plans); namely (i) addition of a second zinc-clad dormer at the rear corner, matching the approved dormer and resolving an existing non-original, failing flat-roofed junction; (ii) a small high-level clerestory window to the rear elevation at ground floor; and (iii) the repositioning of one of the two approved Velux-type rooflights from the rear roofslope to the east roofslope

    Received 5 Aug, published by the council 10 Aug 2026 Amendments
  • HGY/2026/2143 Granted

    98 High Street, Hornsey, London, N8 7NT

    Variation to description and condition 2 (approved plans) to reflect the changes to façade and the addition of a top floor flat. The description shall read: "Construction of a 2-bedroom mews dwelling (Use Class C3); reconfiguration of 2 existing flats (UseClass C3); conversion of loft into a self-contained flat (Use Class C3); and upgrades to the façade." to ref: HGY/2024/2879

    Received 5 Aug, published by the council 10 Aug 2026 Amendments
  • HGY/2026/2702 Awaiting decision

    Public House, 492 West Green Road, Tottenham, London, N15 3DA

    Non-material amendment to planning permission HGY/2024/1971 to increase the approved roof height by approximately 0.20m, and increase chimney heights by approximately 0.23m.

    Received 2 Oct, published by the council 11 Oct 2026 Amendments
  • HGY/2026/2053 Granted

    Unit 1, 25-27 Clarendon Road Off Hornsey Park Road, Wood Green, London, N8 0DD

    Non-Material amendment to planning permission (HGY/2024/2279) to amend condition 2 (Approved plans), condition 16 (cycle parking) and conditions 25 (Accessible studio provision)

    Received 20 Jul, published by the council 22 Aug 2026 Amendments
  • HGY/2026/2458 Granted

    143 Wightman Road, Hornsey, London, N8 0BB

    Non-Material Amendment to planning permission ref. HGY/2025/3436 granted on 3/2/26 for the installation of a roof terrace to the first floor flat rear roof terrace; namely glazed privacy screen to be replaced with slatted, timber screen

    Received 1 Oct, published by the council 4 Oct 2026 Amendments