49 St Marys Avenue Northwood HA6 3AY

1. 30 Jun 2025

   Received by Three Rivers

2. 19 Aug 2025

   Decision issued: approved

3. 24 Jul 2026

   Added to PlanIndex

Three Rivers granted permission on 19 August 2025, 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.

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.

• 35 St Marys Avenue Northwood HA6 3AY

  21/0992/FUL Submitted 19 Apr 2021 100 yards away

  Single storey rear extension, part single, part two storey side extension and alterations to garage roof

  Granted Full applications Extension 13 docs
  Small domestic

• 40 Sandy Lodge Way Northwood HA6 2AS

  24/0403/FUL Submitted 14 Mar 2024 100 yards away

  Demolition of existing single storey rear extension and construction of part single, part two storey rear extension with Juliet balconies, first floor side extension, single storey front and side extensions and loft conversion including side dormer, windows to front and rear and side rooflights, conversion of garage and alterations to fenestration

  Granted Full applications Extension Loft or dormer +2 28 docs
  Small domestic

• 40 Sandy Lodge Way Northwood HA6 2AS

  24/0180/PDE Submitted 6 Feb 2024 100 yards away

  Prior Approval: Single storey rear extension (depth 6 metres, maximum height 3 metres, maximum eaves height 3 metres)

  Granted Outline Extension 16 docs
  Small domestic

• 33 St Marys Avenue Northwood HA6 3AY

  20/2153/PDE Submitted 12 Oct 2020 150 yards away

  Prior Approval: Single storey rear extension (depth 8 metres, maximum height 3.90metres, maximum eaves height 2.80 metres)

  Granted Outline Extension 5 docs
  Small domestic

• 33 St Marys Avenue Northwood HA6 3AY

  21/0897/FUL Submitted 8 Apr 2021 150 yards away

  Construction of ground floor front bay window matching first floor

  Granted Full applications Windows or glazing 8 docs

• 42 Sandy Lodge Way Northwood HA6 2AS

  20/1811/FUL Submitted 2 Sep 2020 150 yards away

  Single storey front porch extension

  Granted Full applications Extension 14 docs
  Small domestic

• 26/1481/NMA Awaiting decision

  No. 3 - 6 Wolsey Business Park Tolpits Lane Watford Hertfordshire WD3 9BL

  Non Material Amendments to planning permission 24/1137/FUL to allow alterations to the landscaping and fencing

  Received 17 Sep, published by the council 18 Sep 2026 Amendments
• 26/1478/NMA Awaiting decision

  12 Raglan Gardens Oxhey Hall Watford Hertfordshire WD19 4LL

  Non-material amendment to planning permission 26/0793/FUL to allow a reduction in size to the approved first-floor side extension.

  Received 16 Sep, published by the council 17 Sep 2026 Amendments
• 26/1230/NMA Granted

  Beaufort Court Egg Farm Lane Kings Langley Hertfordshire WD4 8LR

  Non Material Amendments to planning permission 24/1751/RSP to allow separate work on the coach house and crop store (Condition 4)

  Received 31 Jul, published by the council 8 Aug 2026 Amendments
• 26/1353/NMA Awaiting decision

  Langleybury House And Film Center Langleybury Lane Langleybury Hertfordshire WD4 8RW

  Non Material Amendment to planning permission 22/1945/FUL to vary the wording of Condition 69 (Phasing)

  Received 21 Aug, published by the council 25 Aug 2026 Amendments
• 26/1153/NMA Granted

  44 Wolsey Road Moor Park Northwood Hertfordshire HA6 2EN

  Non Material Amendment to planning permission 25/0391/RSP to allow glass balustrades in place of metal railings to rear Juliet balconies.

  Received 16 Jul, published by the council 30 Jul 2026 Amendments