Oaktree Cottage Harefield Road Rickmansworth Hertfordshire WD3 1PD

1. 7 Aug 2023

   Received by Three Rivers

2. 11 Sep 2023

   Validated

   Checked as complete and ready for consideration.

3. 12 Oct 2023

   Decision issued: approved

4. 19 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

• Springbank 143 Harefield Road Rickmansworth Hertfordshire WD3 1PB

  22/2097/FUL Submitted 14 Nov 2022 84m away

  Demolition of existing conservatory and construction of two storey and single storey side and rear extension; roof extension including increase in ridge height, hip to gable roof alterations, front dormer and roof lights to create two storey dwelling including accommodation in the roof space, alterations to fenestration detail and alterations to landscaping.

  Withdrawn Full applications Extension Loft or dormer +3 20 docs
  Small domestic

• Juniper House 113 Harefield Road Rickmansworth Hertfordshire WD3 1PB

  24/1163/TPO Submitted 22 Jul 2024 119m away

  Sycamore 1 - cut back overhanging branches to boundary line Sycamore 2 - cut back overhanging branches to boundary line Oak 1 - cut back overhanging branches to boundary line Cherry1 - cut back overhanging branches to boundary line Sycamore 3 cut back overhanging branches to boundary line

  Granted Trees 11 docs

• The Bell House 111 Harefield Road Rickmansworth Hertfordshire WD3 1PB

  26/1224/RSP Submitted 31 Jul 2026 120m away

  88% historically approved · decision due ~1 Oct

  Part Retrospective: Demolition of existing conservatory and construction of single storey side and rear extensions, loft conversion including side dormer; rear juliet balconies, internal alterations and alterations to fenestration; construction of front porch; alterations to external materials; construction of detached annexe.

  Awaiting decision Extension Loft or dormer +2
  Small domestic

• 125 Harefield Road Rickmansworth WD3 1PB

  21/0997/FUL Submitted 19 Apr 2021 180m away

  Ground floor infill extension and alterations to fenestration

  Granted Full applications Extension Windows or glazing 27 docs

• 111 Harefield Road Rickmansworth Hertfordshire WD3 1PB

  25/1562/FUL Submitted 12 Sep 2025 273m away

  Demolition of existing conservatory and construction of single storey rear extension, loft conversion including side dormer; rear juliet balconies, internal alterations and alterations to fenestration

  Granted Full applications Extension Loft or dormer +2 39 docs
  Small domestic

• 53 Sherfield Avenue Rickmansworth WD3 1NN

  21/0345/FUL Submitted 16 Feb 2021 282m away

  Demolition of existing conservatory, side store and rear gable, hip-to-gable loft extension with front and rear dormers, insertion of front and rear rooflights, alterations to fenestration detail, internal alterations and associated external landscape works

  Granted Full applications Extension Loft or dormer +2 23 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