20 Church Lane Mill End WD3 8HD

1. 23 Feb 2021

   Received by Three Rivers

2. 4 Mar 2021

   Validated

   Checked as complete and ready for consideration.

3. 16 Mar 2021

   Decision issued: approved

4. 21 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

• 40 Church Lane Mill End Hertfordshire WD3 8HD

  22/0501/FUL Submitted 17 Mar 2022 38m away

  Single storey side and rear extension, increase in height and replacement of existing rear projection roof and alterations to fenestration.

  Granted Full applications Extension Windows or glazing 25 docs
  Small domestic

• 3 St Peters Close Rickmansworth Hertfordshire WD3 8UY

  23/1931/FUL Submitted 15 Nov 2023 40m away

  Demolition of existing garage and construction of single storey side and rear extension with associated internal alterations.

  Granted Full applications Extension Demolition 19 docs
  Small domestic

• 8 Church Lane Mill End Rickmansworth Hertfordshire WD3 8HD

  20/2326/FUL Submitted 2 Nov 2020 49m away

  Loft conversion including increase in ridge height and rear dormer window, first and second storey rear extensions and single storey rear extension to connect dwelling with outbuilding

  Refused Full applications Extension Loft or dormer +2 27 docs
  Small domestic

• 8 Church Lane Mill End Rickmansworth Hertfordshire WD3 8HD

  22/1111/DIS Submitted 8 Jun 2022 50m away

  Discharge of condition 3 (Materials) pursuant to planning permission 21/2945/FUL

  Decided Conditions 3 docs

• 8 Church Lane Mill End Rickmansworth Hertfordshire WD3 8HD

  23/2031/FUL Submitted 28 Nov 2023 50m away

  Alterations to the roof including increase in ridge height; replacement of rear window

  Granted Full applications Roofing Windows or glazing 17 docs

• 8 Church Lane Mill End Rickmansworth Hertfordshire WD3 8HD

  22/0654/CLPD Submitted 5 Apr 2022 51m away

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

  Granted Lawful development Loft or dormer Windows or glazing 16 docs

• 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