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.

• 43 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

  26/1243/FUL Submitted 3 Aug 2026 50 yards away

  89% historically approved · decision due ~30 Sep

  Demolition of existing dwelling; construction of two storey detached dwelling with accommodation in the roof space served by front and rear dormer windows; solar panels, alterations to the driveway and creation of new vehicular access with dropped kerb; alterations to front boundary including construction of brick wall with piers, metal railings and gates; associated landscaping including creation of a swimming pool and ancillary works

  Awaiting decision Full applications New dwelling Loft or dormer +2 26 docs
  Small domestic

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

  25/1870/FUL Submitted 29 Oct 2025 100 yards 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  Withdrawn Full applications Extension Loft or dormer +3 25 docs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 100 yards 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 100 yards 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 100 yards 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 100 yards 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

• 26/1409/CLED Awaiting decision

  44 Wolsey Road Moor Park Northwood Hertfordshire HA6 2EN

  Certificate of Lawfulness Existing Development: Construction of an outbuilding

  Received 3 Sep, published by the council 7 Sep 2026 Lawful development
• 26/1382/CLPD Awaiting decision

  1 Wyatts Lodge Solesbridge Lane Chorleywood Rickmansworth Hertfordshire WD3 5SW

  Certificate of Lawfulness Proposed Development: Installation of external heating and cooling pump

  Received 31 Aug, published by the council 7 Sep 2026 Lawful development
• 26/1035/CLPD Granted

  90 Sherborne Way Croxley Green Rickmansworth Hertfordshire WD3 3PG

  Certificate of Lawfulness Proposed Development: lLoft conversion including hip to gable extension, rear dormer, and front rooflights and window to side elevation.

  Received 25 Jun, published by the council 24 Jul 2026 Lawful development
• 26/1004/CLPD Granted

  39 Bishops Avenue Northwood HA6 3DD

  Certificate of Lawfulness Proposed Development: Conversion of garage to habitable accommodation

  Received 19 Jun, published by the council 24 Jul 2026 Lawful development
• 26/0973/CLPD Granted

  125 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FB

  Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer and front rooflights.

  Received 15 Jun, published by the council 24 Jul 2026 Lawful development