Oakbridge House 45 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AH

1. 18 Nov 2025

   Received by Three Rivers

2. 12 Jan 2026

   Decision issued: approved

3. 19 Aug 2026

   Added to PlanIndex

Three Rivers granted permission on 12 January 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• Downfield 49 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AH

  25/1870/FUL Submitted 29 Oct 2025 80m away

  Demolition of existing outbuilding and construction of part-single, part-two storey front, side and rear extension with terrace balcony, creation of loft accommodation above the garage; loft conversion including roof alterations, rear dormer windows, side rooflights, solar panels, alterations to fenestration, creation of new access; boundary treatments including brick piers, boundary wall and metal railings, timber entrance gates.

  Withdrawn Full applications Extension Loft or dormer +3 25 docs
  Small domestic

• Downfield 49 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AH

  26/0547/FUL Submitted 7 Apr 2026 82m away

  Demolition of existing outbuilding and construction of part-single, part-two storey front, side and rear extension, loft conversion with rear dormer windows, solar panels, rear balcony; loft accommodation above the garage including front/rear dormers, side rooflights; alterations to fenestration, boundary treatments including installation of front brick walls and piers, metal railings and timber entrance gates; creation of new access with alterations to driveway and landscaping works.

  Granted Full applications Extension Loft or dormer +2 18 docs

• 22 Copthorne Road Croxley Green WD3 4AQ

  21/1140/FUL Submitted 4 May 2021 96m away

  Demolition of existing conservatory and construction of single storey rear extension, front porch, alterations to fenestration and internal alterations

  Granted Full applications Extension Demolition +1 10 docs
  Small domestic

• 24 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AQ

  25/1855/FUL Submitted 27 Oct 2025 104m away

  Demolition of existing dwelling and construction of a self-build two-storey dwelling with basement and accommodation in the roof served by a crown roof and front and rear dormers and flank rooflights; and alterations to driveway

  Granted Full applications New dwelling Loft or dormer +1 36 docs
  Domestic

• The Laurels 14 Green Lane Croxley Green Rickmansworth Hertfordshire WD3 3HR

  22/0104/FUL Submitted 21 Jan 2022 112m away

  Loft conversion including roof alterations to form gable end, front rooflights and rear dormers, provision of new roof form to existing rear conservatory and alterations to fenestration detail

  Granted Full applications Extension Loft or dormer +2 16 docs

• 35 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

  25/1887/FUL Submitted 31 Oct 2025 113m away

  Partial demolition of existing dwelling and construction of a part two storey, part single storey rear extension; front porch; alterations to roof of existing garage; construction of new roof including two rear dormer windows, front and side rooflights; raised rear patio; installation of solar panels to southern flank roofslope; removal of chimney; and alterations to fenestration.

  Granted Full applications Extension Loft or dormer +3 12 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