107 Hornhill Road Maple Cross WD3 9TG

1. 11 Mar 2021

   Received by Three Rivers

2. 15 Apr 2021

   Decision issued: approved

3. 4 Sep 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

• 103 Hornhill Road Maple Cross WD3 9TG

  21/0274/FUL Submitted 9 Feb 2021 16m away

  Installation of front ramp

  Granted Full applications 10 docs

• 48 Woodland Road Maple Cross Rickmansworth Hertfordshire WD3 9SU

  26/0447/FUL Submitted 18 Mar 2026 43m away

  Demolition of existing bunker, garage, shed, and lean-to extension and construction of a single storey side and rear extension, window to side elevation and internal alterations

  Granted Full applications Extension Demolition +1 13 docs
  Small domestic

• 52 Woodland Road Maple Cross WD3 9SU

  20/2461/FUL Submitted 18 Nov 2020 50m away

  Demolition of existing garage and extension and construction of a single storey front and side extension and extension and alterations to existing rear extension

  Granted Full applications Extension Demolition 10 docs
  Small domestic

• 28 Woodland Road Maple Cross WD3 9SU

  20/2184/FUL Submitted 16 Oct 2020 67m away

  Demolition of attached garage and construction of single storey side extension

  Granted Full applications Extension Demolition 8 docs
  Small domestic

• 13 Woodwicks Maple Cross Rickmansworth Hertfordshire WD3 9TL

  24/0863/CLPD Submitted 31 May 2024 76m away

  Certificate of Lawfulness Proposed Development: Demolition of existing store and construction of single storey rear extension and front porch

  Granted Lawful development Extension Demolition 7 docs
  Small domestic

• 11 Woodwicks Maple Cross WD3 9TL

  21/0680/FUL Submitted 17 Mar 2021 85m away

  Part single, part two storey rear extension and single storey front extension

  Granted Full applications Extension 10 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