53 St Marys Avenue Northwood HA6 3AY

1. 8 Jun 2026

   Received by Three Rivers

2. 9 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

Three Rivers has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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

  21/0486/FUL Submitted 26 Feb 2021 14m away

  Two storey rear extension

  Granted Full applications Extension 10 docs

• 33 St Marys Avenue Northwood HA6 3AY

  20/2153/PDE Submitted 12 Oct 2020 15m 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 15m away

  Construction of ground floor front bay window matching first floor

  Granted Full applications Windows or glazing 8 docs

• 31 St Marys Avenue Northwood HA6 3AY

  23/2027/FUL Submitted 29 Nov 2023 20m away

  Demolition of existing store and construction of single storey rear extension and pergola.

  Granted Full applications Extension Demolition 7 docs
  Small domestic

• 35 St Marys Avenue Northwood HA6 3AY

  21/0992/FUL Submitted 19 Apr 2021 27m 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 44m 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

• 26/1487/FUL Awaiting decision

  48 Valley Road Rickmansworth Hertfordshire WD3 4DS

  Demolition of existing car port; construction of a part single part two storey side and rear extension; alteration to the fenestration

  18 Sep 2026 Full applications
• 26/1471/FUL Awaiting decision

  6 Sycamore Approach Croxley Green Rickmansworth Hertfordshire WD3 3TN

  Demolition of existing garage and front entry porch; construction of a single storey front, side and rear extensions; internal alterations; alterations to hardstanding

  16 Sep 2026 Full applications
• 26/1167/FUL Granted

  22 Penrose Avenue Carpenders Park Watford Hertfordshire WD19 5AD

  Construction of single storey front and rear extension; alterations to fenestration; installation of roof lanterns

  20 Jul 2026 Full applications
• 26/1456/FUL Awaiting decision

  1 Penn Way Chorleywood Rickmansworth Hertfordshire WD3 5HQ

  Construction of single storey side and rear extension; conversion of garage into habitable accommodation; removal of chimney stack

  14 Sep 2026 Full applications
• 26/1452/FUL Awaiting decision

  3 Arnett Way Rickmansworth Hertfordshire WD3 4DA

  Construction of a single storey front extension and two storey side extension; partial conversion of garage into habitable accommodation; installation of roof lights; alterations to the fenestration; internal alterations

  14 Sep 2026 Full applications