31 St Marys Avenue Northwood HA6 3AY

1. 29 Nov 2023

   Received by Three Rivers

2. 12 Jan 2024

   Decision issued: approved

3. 24 Jul 2026

   Added to PlanIndex

Three Rivers granted permission on 12 January 2024, 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.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 33 St Marys Avenue Northwood HA6 3AY

  20/2153/PDE Submitted 12 Oct 2020 50 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 50 yards away

  Construction of ground floor front bay window matching first floor

  Granted Full applications Windows or glazing 8 docs

• 33 St Marys Avenue Northwood HA6 3AY

  21/0486/FUL Submitted 26 Feb 2021 50 yards away

  Two storey rear extension

  Granted Full applications Extension 10 docs

• 53 St Marys Avenue Northwood HA6 3AY

  26/0935/FUL Submitted 8 Jun 2026 50 yards away

  89% historically approved · decision due ~4 Aug

  Construction of single storey rear extension with roof lantern, installation of window to side elevation

  Decided Full applications Extension Windows or glazing
  Small domestic

• 35 St Marys Avenue Northwood HA6 3AY

  21/0992/FUL Submitted 19 Apr 2021 50 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

• 25 St Marys Avenue Northwood Hertfordshire HA6 3AY

  22/0159/FUL Submitted 2 Feb 2022 50 yards away

  Two storey and single storey rear extensions, first floor side extension, alterations to roof of existing ground floor extension and loft conversion including roof alterations and extensions and insertion of rooflights and rear dormer, alterations to materials and fenestration detail.

  Granted Full applications Extension Loft or dormer +2 36 docs
  Small domestic

• 26/1754/FUL Awaiting decision

  1 Woodhall Lane South Oxhey Watford Hertfordshire WD19 6HE

  Variation of Conditions 2 (In accordance with plans) and 4 (No additional windows) pursuant to planning permission 24/0576/FUL to allow alterations to the rooflights and the relocation of an unglazed side door

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/1744/FUL Awaiting decision

  12 Fulford Grove South Oxhey Watford Hertfordshire WD19 7QG

  Demolition of existing shed and erection of under ground concrete garden bunker in the rear garden

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/1716/FUL Awaiting decision

  48 Woodland Road Maple Cross Rickmansworth Hertfordshire WD3 9SU

  Demolition of existing bunker, garage, shed, and lean-to extension, and construction of a single storey front, side, and rear extension; internal alterations

  Received 29 Oct, published by the council 4 Nov 2026 Full applications
• 26/1718/FUL Awaiting decision

  24 The Clump Rickmansworth Hertfordshire WD3 4BQ

  Construction of single storey rear extension, with alterations to fenestration, removal of rear balcony

  Received 29 Oct, published by the council 4 Nov 2026 Full applications
• 26/1714/FUL Awaiting decision

  The Weather House Lavrock Lane Croxley Hall Croxley Green Rickmansworth Hertfordshire WD3 3BE

  Demolition of existing residential dwelling and construction of replacement two storey detached dwelling with front/rear dormers, rooflights, solar panels, and a detached outbuilding, with associated parking and landscaping works.

  Received 29 Oct, published by the council 2 Nov 2026 Full applications