278 Watford Road Croxley Green WD3 3DD

1. 29 Oct 2020

   Received by Three Rivers

2. 9 Nov 2020

   Validated

   Checked as complete and ready for consideration.

3. 30 Nov 2020

   Decision issued: approved

4. 8 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 lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 274 Watford Road Croxley Green Hertfordshire WD3 3DD

  22/1355/FUL Submitted 18 Jul 2022 17m away

  Part single storey, part two storey rear extension

  Granted Full applications Extension 8 docs
  Small domestic

• 272 Watford Road Croxley Green WD3 3DD

  21/0691/FUL Submitted 17 Mar 2021 24m away

  Creation of a vehicular crossover

  Granted Full applications 8 docs

• 270 Watford Road Croxley Green Rickmansworth Hertfordshire WD3 3DD

  21/0779/FUL Submitted 26 Mar 2021 31m away

  Construction of dropped kerb and cross over including removal of parking bay

  Granted Full applications 10 docs

• 270 Watford Road Croxley Green Rickmansworth Hertfordshire WD3 3DD

  21/0917/PDE Submitted 9 Apr 2021 32m away

  Prior Approval: Single storey rear extension (depth 4.7 metres, maximum height 3.15 metres and eaves height 2.9 metres)

  Granted Outline Extension 10 docs
  Small domestic

• 282 Watford Road Croxley Green WD3 3DE

  22/0899/FUL Submitted 12 May 2022 33m away

  Construction of two storey side and rear extension, basement rear extension, single storey front porch extension, loft conversion including rear dormer and alterations to raised patio

  Withdrawn Full applications Extension Loft or dormer 18 docs
  Small domestic

• 282 Watford Road Croxley Green WD3 3DE

  20/1883/FUL Submitted 11 Sep 2020 35m away

  Construction of two storey side and rear extension, front porch, loft conversion including front and rear rooflight and alterations to raised patio

  Withdrawn Full applications Extension Loft or dormer 21 docs
  Small domestic

• 26/0460/CLED Granted

  Annexe Hart Hall Hyde Lane Nash Mills Hemel Hempstead Hertfordshire HP3 8SA

  Certificate of Lawfulness Existing Use: Use of annexe as an independent dwelling

  19 Mar 2026 Lawful development
• 26/0724/CLED Granted

  70 The Mead Carpenders Park Watford Hertfordshire WD19 5BU

  Certificate of Lawfulness Existing Use: Use of annexe as a separate dwelling

  5 May 2026 Lawful development
• 25/1151/CLED Refused

  Unit 6 Century Court Tolpits Lane Watford Hertfordshire

  Certificate of Lawfulness Existing Use: Use of property as single dwellinghouse (Use Class C3)

  4 Jul 2025 Lawful development
• 26/0736/CLPD Granted

  45 Watford Road Croxley Green Rickmansworth Hertfordshire WD3 3DS

  Certificate of Lawfulness Proposed Development: Loft conversion including hip to gable roof extension with rear juliet dormer and window, front rooflights, side window

  7 May 2026 Lawful development
• 26/0631/CLPD Granted

  Clovelly Bell Lane Bedmond Abbots Langley Hertfordshire WD5 0QS

  Certificate of Lawfulness Proposed Development: Loft conversion including hip to dutch hip roof extension, rear juliet dormer with windows

  20 Apr 2026 Lawful development