Flat A, 110 Mattison Road, Hornsey, London, N4 1BE

1. 24 Oct 2024

   Received by Haringey

2. 17 Dec 2024

   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

• First Floor Flat, 108 Mattison Road, Hornsey, London, N4 1BE

  HGY/2024/2942 Submitted 25 Oct 2024 0m away

  Erection of extension to existing rear dormer width, replacement of the external rear façade with timber cladding, replacement of existing patio doors with double glazed units and modification and replacement of existing roof lights with the reduction of 6 rooflights to 5.

  Granted Full applications Extension Loft or dormer +1 12 docs

• 100 Mattison Road, Hornsey, London, N4 1BE

  HGY/2025/3051 Submitted 10 Dec 2025 0m away

  Erection of a single storey rear wraparound extension to the ground floor flat and related works.

  Granted Householder Extension 9 docs
  Small domestic

• Ground Floor Flat, 108, Mattison Road, London, N4 1BE

  HGY/2021/1995 Submitted 1 Jul 2021 8m away

  Erection of single-storey wraparound extension

  Granted Full applications Extension 11 docs
  Small domestic

• First Floor Flat, 97 Mattison Road, Hornsey, London, N4 1BQ

  HGY/2025/3143 Submitted 12 Dec 2025 34m away

  Loft extension including the erection of a rear dormer, front rooflights and rear roof terrace.

  Granted Full applications Extension Loft or dormer 11 docs

• 91 Pemberton Road, Hornsey, London, N4 1AY

  HGY/2026/2411 Submitted 28 Aug 2026 79m away

  91% historically approved · decision due ~23 Oct

  Single storey side infill extension with 3 no. rooflights

  Awaiting decision Householder Extension Loft or dormer 7 docs
  Small domestic

• 26B Grand Parade, Tottenham, London, N4 1LG

  HGY/2026/0443 Submitted 18 Feb 2026 95m away

  Certificate of lawfulness: existing use of the flat as a small 3-bedroom HMO (Class C4 Use).

  Refused Lawful development 18 docs

• 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