First Floor Flat, 46 Seymour Road, Hornsey, London, N8 0BE

1. 29 Nov 2022

   Received by Haringey

2. 24 Apr 2023

   Decision issued: Approve with Conditions

3. 31 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• 70 Seymour Road, Hornsey, London, N8 0BE

  HGY/2026/2243 Submitted 10 Aug 2026 0m away

  91% historically approved · decision due ~5 Oct

  Removal of existing front boundary wall and replace with a fixed corten steel bicycle storage unit.

  Awaiting decision Householder 8 docs
  Small domestic

• 73 Seymour Road, Hornsey, London, N8 0BJ

  HGY/2023/0349 Submitted 3 Feb 2023 29m away

  Single storey side and rear extension

  Granted Householder Extension 6 docs
  Small domestic

• 45 Seymour Road, Hornsey, London, N8 0BJ

  HGY/2025/3431 Submitted 9 Dec 2025 29m away

  Single storey side extension, new patio door at the ground floor and replace first floor rear window with juliette balcony window with a glass balustrade

  Granted Householder Extension Windows or glazing 18 docs
  Small domestic

• 33 Warham Road, Hornsey, London, N4 1AR

  HGY/2025/3267 Submitted 26 Nov 2025 45m away

  Erection of rear dormer with linked roof extension above outrigger projection, installation of 2 front rooflights.

  Granted Householder Extension Loft or dormer 7 docs
  Domestic

• 3 Warham Road, Hornsey, London, N4 1AR

  HGY/2023/0191 Submitted 20 Jan 2023 45m away

  Non-material amendment to planning permission ref: HGY/2022/2117 in order to change the wording of conditions 3 to read: "The development hereby approved shall be finished in accordance with material detailed in drawing no. WAR_PL_003 and WAR_PL_DAS unless otherwise agreed in writing by the Local Planning Authority" and condition 4 to be changed to: "Prior to its installation details of the air source heat pump shall be submitted to and approved in writing by the Local Planning Authority. Details shall include a noise assessment report, including acoustic data to demonstrate that the noise level from the operation of the air source heat pump hereby approved must not exceed 42dB LAeq (5 min) at 1 metre from the window of a habitable room on the façade of any neighbouring residential property. If, in the opinion of the Local Planning Authority the proposed air source heat pump will result in any noise nuisance to the occupant of any neighbouring dwelling the Applicant shall install noise mitigation measures in agreement with the Planning Authority. The development shall thereafter be carried out in accordance with such details as may be approved or any other approved details as submitted to the Local Planning Authority if an alternative to the chosen renewable energy is to be installed. "

  Granted Amendments Windows or glazing 2 docs
  Domestic

• 19 Warham Road, Hornsey, London, N4 1AR

  HGY/2024/2439 Submitted 15 Oct 2024 45m away

  Demolition of existing ground floor rear extension and erection of a new single storey side infill extension.

  Granted Householder Extension Demolition 11 docs
  Small domestic

• HGY/2026/1488 Granted

  203-209 Muswell Hill Broadway, Hornsey, London, N10 3RQ

  Installation of defibrillator and bleed kit cabinets to external wall of Nationwide Building Society branch

  10 Jul 2026 Full applications
• HGY/2026/2208 Awaiting decision

  21 The Grove Lynton Road, Hornsey, London, N8 8ST

  Increase the height of the embrasures of the parapet wall gutters throughout. Supply and install 140mm of insulation into the parapet gutter. Install a metal capping – by bauder on the top of the parapet wall. New roof covering – supply and install new tile roof covering. New tiles to be Marley Wessex Smooth Grey.

  4 Sep 2026 Full applications
• HGY/2026/2340 Awaiting decision

  Rowan, Muswell Road, Hornsey, London, N10 2BX

  The riser team is required to run a new inlet pipe from the isolation valve, extending approximately 5m to supply the new meter boxes, which will be installed at the front of the building.

  4 Sep 2026 Full applications
• HGY/2026/2284 Awaiting decision

  10 & 12 Gladesmore Road, London, N15 6TB

  Erection of first floor extensions to the rear elevations of Nos. 10 and 12 Gladesmore Road and the alteration of their ground floor rear fenestration.

  3 Sep 2026 Full applications
• HGY/2026/2062 Awaiting decision

  165 Priory Road, Hornsey, London, N8 8NB

  Change of use from upper floor residential unit into a 6-persons House in Multiple Occupation (HMO), with associated cycle and bin stores in rear courtyard.

  2 Sep 2026 Full applications