21 Claremont Crescent Croxley Green WD3 3QP

1. 28 Oct 2020

   Received by Three Rivers

2. 15 Dec 2020

   Decision issued: approved

3. 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

• 21 Claremont Crescent Croxley Green Rickmansworth Hertfordshire WD3 3QP

  22/0987/PDE Submitted 23 May 2022 2m away

  Prior Approval: Single storey rear extension (depth 6 metres, maximum height 4 metres, maximum eaves height 3 metres)

  Granted Outline Extension 4 docs
  Small domestic

• 25 Claremont Crescent Croxley Green Rickmansworth Hertfordshire WD3 3QP

  20/2136/PDE Submitted 9 Oct 2020 18m away

  Prior Approval: Single storey rear extension (depth 3.63 metres, maximum height 3.74 metres, maximum eaves height 2.67 metres)

  Granted Outline Extension 6 docs
  Small domestic

• 56 Winton Drive Croxley Green Hertfordshire WD3 3RD

  22/0241/FUL Submitted 15 Feb 2022 41m away

  Two storey front extension and front porch

  Granted Full applications Extension 6 docs
  Small domestic

• 50 Winton Drive Croxley Green Hertfordshire WD3 3RD

  22/0277/FUL Submitted 21 Feb 2022 43m away

  Demolition of existing single storey rear extension and construction of new single storey rear extension and alterations to fenestration

  Granted Full applications Extension Demolition +1 7 docs
  Small domestic

• 8 Girton Way Croxley Green Rickmansworth Hertfordshire WD3 3QN

  23/1708/CLED Submitted 10 Oct 2023 47m away

  Certificate of Lawfulness Existing Use: Construction of an outbuilding

  Granted Lawful development 7 docs

• 56 Winton Drive Croxley Green Rickmansworth Hertfordshire WD3 3RD

  22/0209/PDE Submitted 10 Feb 2022 49m away

  Prior Approval: Single storey rear extension (maximum depth 3.90 metres, maximum height 3.726 metres, maximum eaves height 3 metres)

  Granted Outline Extension 4 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