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Planning application

HGY/2026/1233

8 Twyford Avenue, Hornsey, London, N2 9NJ

Awaiting decision Haringey Lawful development: Proposed use

Proposal

Certificate of lawfulness for the erection of a rear dormer and a side dormer including the insertion of 1x front rooflight and 1x rooflight over the side dormer - proposed use

As published by the council, reference HGY/2026/1233

Timeline

Dates from the published record

  1. 5 May 2026

    Received by Haringey

  2. 24 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Haringey for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • TPP/0267/26 Awaiting decision

    44 Church Vale London N2 9PA

    1 x Hornbeam (applicants ref. T2) - Reduce crown by 2m and thin crown by 25 percent. Standing in T1 of Tree Preservation Order.

    12 May 2026 49m away Trees
  • HGY/2026/0975 Awaiting decision

    Albion Lodge, Fortis Green, Hornsey, London, N2 9EP

    Listed building consent for erection of a single storey side extension, replacement of conservatory roof, alterations to fenestration, installation of front entrance gates and solar panels to the roof and internal alterations.

    10 Mar 2026 54m away Heritage and listed buildings
  • HGY/2026/0652 Awaiting decision

    Albion Lodge, Fortis Green, Hornsey, London, N2 9EP

    Erection of a single storey side extension, replacement of conservatory roof, alterations to fenestration, installation of front entrance gates and solar panels to the roof.

    9 Mar 2026 54m away Householder
  • TPP/0381/26 Awaiting decision

    1 Vale Close London N2 9NG

    1 x Oak (applicants ref. T1) - Reduce crown back to most recent pruning points leaving short furnishing growths, approximately 3m reduction. Remove damaged branch over communal area. Standing in T3 of Tree Preservation Order.

    3 Jul 2026 80m away Trees
  • HGY/2026/0002 Granted

    Flats 13 & 17 Westside, 68 Fortis Green, Hornsey, London, N2 9ES

    Amalgamation of two self contained flats into one five-bedroom flat (Class C3 Use).

    28 Jan 2026 112m away Householder
  • TPP/0301/26 Awaiting decision

    13 Durham Road London N2 9DP

    1 x Oak (applicants ref. T1) - Thin crown by 15%, remove epicormic regrowth and remove dead wood. Standing in T1 of Tree Preservation Order.

    27 May 2026 120m away Trees

In Haringey

  • HGY/2026/2104 Granted

    17 Sperling Road, Tottenham, London, N17 6UQ

    Certificate of lawfulness for proposed use: Loft conversion with erection of rear L-shaped dormer and insertion of 2no. front rooflights.

    23 Jul 2026 Lawful development
  • HGY/2026/1307 Granted

    49 Lordsmead Road, Tottenham, London, N17 6EX

    Certificate of lawfulness for the existing use of the property as five separate self-contained flats.

    8 May 2026 Lawful development
  • HGY/2026/1885 Granted

    6, Grainger Road, London, N22 5LT

    Certificate of Lawfulness: Proposed alterations to the roof comprising the installation of 3no. rooflights (2no. front facing and 1no. rear facing).

    6 Jul 2026 Lawful development
  • HGY/2026/1375 Granted

    Flats 1, 2, & 3 149 Crescent Road, Wood Green, London, N22 7RU

    Certificate of lawfulness for the existing use of the property as 3 self-contained flats (comprising of ground floor 2 bed, first floor 2 bed, second floor 1 bed) for more than 4 years.

    14 May 2026 Lawful development
  • HGY/2026/1409 Granted

    492 Archway Road, Hornsey, London, N6 4NA

    Certificate of Lawfulness Existing Use. Use of lower ground floor as two flats (Use Class C3).

    19 May 2026 Lawful development