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Planning application

5 Firs Avenue, Hornsey, London, N10 3LY

Granted Haringey HGY/2026/0923 Householder planning permission

Works: Extension Loft or dormer Small domestic

Read from the description, not a valuation. How we read the register

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

Proposal

Erection of lower ground floor single storey rear extension; basement extension; rear dormer extension; associated internal and external changes.

As published by the council, reference HGY/2026/0923

Application record

Reference
HGY/2026/0923
Type
Householder planning permission
Status
Decision Made
Decision
Approve with Conditions
Received
30 Mar 2026
Validated
30 Mar 2026
Decided
22 Jun 2026
Ward
Muswell Hill
Decision by
Delegated Decision
Postcode
N10 3LY

Site history

Applications at this address on the Haringey register

This site has had 3 applications since 2026: 2 approved, 1 refused.

  • HGY/2026/1900 Granted

    5 Firs Avenue, Hornsey, London, N10 3LY

    Approval of details pursuant to condition 4 (Chartered Engineer) attached to planning permission ref. HGY/2026/0923 for Erection of lower ground floor single storey rear extension; basement extension; rear dormer extension; associated internal and external changes granted on 22/06/2026.

    Decided 13 Jul 2026 Conditions
  • HGY/2026/1839 Refused

    5 Firs Avenue, Hornsey, London, N10 3LY

    Minor Material Amendment application under Section 73 of the Town and Country Planning Act for variation to condition 2 attached to planning permission HGY/2026/0923 to enable the construction of a front lightwell and front glazing to lower ground floor.

    Decided 21 Aug 2026 Amendments

Timeline

Dates from the published record

  1. 30 Mar 2026

    Received by Haringey

  2. 22 Jun 2026

    Decision issued: Approve with Conditions

  3. 24 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

2 later applications on the register refer to this one:

  • HGY/2026/1900 Granted

    5 Firs Avenue, Hornsey, London, N10 3LY

    Approval of details pursuant to condition 4 (Chartered Engineer) attached to planning permission ref. HGY/2026/0923 for Erection of lower ground floor single storey rear extension; basement extension; rear dormer extension; associated internal and external changes granted on 22/06/2026.

    Decided 13 Jul 2026 Conditions
  • HGY/2026/1839 Refused

    5 Firs Avenue, Hornsey, London, N10 3LY

    Minor Material Amendment application under Section 73 of the Town and Country Planning Act for variation to condition 2 attached to planning permission HGY/2026/0923 to enable the construction of a front lightwell and front glazing to lower ground floor.

    Decided 21 Aug 2026 Amendments

Documents

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

11 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.

Trade members open them from here.

Open the documents

What this grant of permission means

Haringey granted permission on 22 June 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 householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 17 Firs Avenue, Hornsey, London, N10 3LY

    HGY/2026/0765 Submitted 18 Mar 2026 0m away

    SG1 Privet, Holly, Laurel, Dog rose, Choisya (height: 1.9m, distance to damage: 3m) Remove close to ground level and treat stumps with herbicide to inhibit regrowth.

    Granted Trees 11 docs
  • 6 Firs Avenue, Hornsey, London, N10 3LY

    HGY/2026/0114 Submitted 15 Jan 2026 0m away

    T1 - eucalyptus tree (9m) - reduce height by approximately 2m and remove two lowest branches. T2 - four pleached hornbeam trees (5m) - reduce branches overhanging garden by approximately 1m. Front garden- T3 - birch tree (12m) - reduce height by approximately 3m and reduce branches away from house by approximately 2m.

    Granted Trees 6 docs
  • 27 Firs Avenue, Hornsey, London, N10 3LY

    HGY/2025/2393 Submitted 4 Sep 2025 0m away

    Proposal: We are proposing to have the large lime tree at the bottom of our garden pruned professionally, as part of the cycle of regular pruning. The proposed work is a 30% crown reduction and thinning back to previous reduction points. I would estimate that the tree is about 15 metres high, so we are requesting a reduction of some 4-5 metres. The tree was last pruned in 2021 under your reference CON/2021/0518: it is in a Conservation Area, but not subject to a Tree Preservation Order.

    Granted Trees 4 docs
  • 5 Firs Avenue, Hornsey, London, N10 3LY

    HGY/2026/1839 Submitted 30 Jun 2026 0m away

    Minor Material Amendment application under Section 73 of the Town and Country Planning Act for variation to condition 2 attached to planning permission HGY/2026/0923 to enable the construction of a front lightwell and front glazing to lower ground floor.

    Refused Amendments Windows or glazing 13 docs
  • 11 Firs Avenue, Hornsey, London, N10 3LY

    HGY/2026/2475 Submitted 4 Sep 2026 0m away

    99% historically approved · decision due ~30 Oct

    T1 - sweet gum tree (6m) - take down to ground level. T2 - acer tree (4m) - reduce lowest limb overhanging patio by approximately 2m to suitable pruning points close to edge of patio. T3 - thorny olive tree (4m) - take down to ground level. T4 - laurel tree (3m) - reduce height to approximately fence height (1.8m) and reduce branches back from bed by approximately 1m. T5 - climbing hydrangea (3m) - reduce height to approximately fence height (1.8m). T6 - ivy on right fence (3m) - remove as much as possible around hydrangea. T7 - ivy on rear fence (3m) - remove as much as possible from top of fence to allow plants beneath space. T8 - winter jasmine & euonymus bushes (2m) - cut back from path. Front garden- T9 - variegated laurel tree (3m) - reduce height to approximately 2.2m and reduce back from driveway. T10 - variegated euonymus hedge (1m) - cut back to wall from pavement and remove branch from rear plant growing wall, leaving acer above.

    Awaiting decision Trees 11 docs
    Small domestic
  • 5 Firs Avenue, Hornsey, London, N10 3LY

    HGY/2026/1900 Submitted 7 Jul 2026 0m away

    Approval of details pursuant to condition 4 (Chartered Engineer) attached to planning permission ref. HGY/2026/0923 for Erection of lower ground floor single storey rear extension; basement extension; rear dormer extension; associated internal and external changes granted on 22/06/2026.

    Granted Conditions Extension Loft or dormer 5 docs
    Small domestic

In Haringey

  • HGY/2026/2282 Awaiting decision

    77 Falkland Road, Hornsey, London, N8 0NS

    Single storey side and rear extension.

    14 Sep 2026 Householder
  • HGY/2026/2059 Granted

    21 Shanklin Road, Hornsey, London, N8 8TJ

    Single Storey Rear Extension

    20 Jul 2026 Householder
  • HGY/2026/2162 Granted

    71 Fairfax Road, Hornsey, London, N8 0NH

    Erection of L-shaped rear dormer; erection of single storey rear extension; 2 no. front roof lights.

    30 Jul 2026 Householder
  • HGY/2026/1895 Granted

    396 St Anns Road, Tottenham, London, N15 3ST

    Erection of single storey side infill extension, formation of dormer window and insertion of 4 nos. rooflights (3no. front facing and 1no. rear facing).

    17 Jul 2026 Householder
  • HGY/2026/1959 Granted

    10 Roseberry Gardens, Tottenham, London, N4 1JJ

    Erection of a single storey rear and side wraparound extension, formation of dormer window and insertion of 3 nos. rooflights to front roof slope (amended).

    17 Jul 2026 Householder