13 Avalon Close Garston Watford Hertfordshire WD25 9TW

1. 23 Sep 2025

   Received by Three Rivers

2. 7 Nov 2025

   Decision issued: approved

3. 24 Jul 2026

   Added to PlanIndex

Three Rivers granted permission on 7 November 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 13 Avalon Close Garston Hertfordshire WD25 9TW

  22/2142/FUL Submitted 17 Nov 2022 50 yards away

  Demolition of existing front porch and construction of part single, part two-storey rear extension and single storey front extension linking dwelling to garage; garage extension and relocation of entrance door; internal alterations and new window to the side elevation

  Granted Full applications Extension Demolition +1 18 docs
  Small domestic

• 68 Bucknalls Lane Garston Watford Hertfordshire WD25 9JQ

  25/0838/FUL Submitted 14 May 2025 50 yards away

  Part Retrospective: demolition of existing garage; and construction of single storey side and rear extension, front extension and new roof over existing bay window.

  Granted Full applications Extension Roofing +2 12 docs
  Small domestic

• 1 Avalon Close Garston WD25 9TW

  21/0753/CLPD Submitted 24 Mar 2021 100 yards away

  Certificate of Lawfulness Proposed Development: Single storey rear extension

  Granted Lawful development Extension 5 docs
  Small domestic

• 12 Lemonfield Drive Garston WD25 9TR

  20/2163/CLPD Submitted 13 Oct 2020 100 yards away

  Certificate of Lawfulness Proposed Development: Loft conversion including insertion of rear dormer and front rooflights

  Granted Lawful development Loft or dormer 7 docs

• 43 Tudor Manor Gardens Garston Watford Hertfordshire WD25 9TQ

  24/0322/FUL Submitted 29 Feb 2024 100 yards away

  Installation of air source heat pump to the rear.

  Granted Full applications 14 docs

• 1 Avalon Close Garston Hertfordshire WD25 9TW

  22/0168/CLPD Submitted 3 Feb 2022 100 yards away

  Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer window and front rooflights

  Granted Lawful development Loft or dormer Windows or glazing 6 docs

• 26/1035/CLPD Granted

  90 Sherborne Way Croxley Green Rickmansworth Hertfordshire WD3 3PG

  Certificate of Lawfulness Proposed Development: lLoft conversion including hip to gable extension, rear dormer, and front rooflights and window to side elevation.

  Received 25 Jun, published by the council 24 Jul 2026 Lawful development
• 26/1004/CLPD Granted

  39 Bishops Avenue Northwood HA6 3DD

  Certificate of Lawfulness Proposed Development: Conversion of garage to habitable accommodation

  Received 19 Jun, published by the council 24 Jul 2026 Lawful development
• 26/0973/CLPD Granted

  125 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FB

  Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer and front rooflights.

  Received 15 Jun, published by the council 24 Jul 2026 Lawful development
• 26/1268/CLPD Awaiting decision

  36 Bishops Avenue Northwood HA6 3DG

  Certificate of Lawfulness Proposed Development: Construction of outbuilding

  Received 7 Aug, published by the council 8 Aug 2026 Lawful development
• 26/1261/CLPD Awaiting decision

  4A Parkside Road Northwood HA6 3HL

  Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer window and installation of rooflights

  Received 5 Aug, published by the council 8 Aug 2026 Lawful development