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Planning application

26/0973/CLPD

125 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FB

Awaiting decision Three Rivers Certificate of Lawfulness - Proposed Use

Proposal

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

As published by the council, reference 26/0973/CLPD

Timeline

Dates from the published record

  1. 15 Jun 2026

    Received by Three Rivers

  2. 16 Jun 2026

    Validated

    Checked as complete and ready for consideration.

  3. 24 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Three Rivers for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 23/0771/OUT Granted

    115 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FB

    Outline application: Subdivision of site and construction of a two-storey end-of-terrace dwelling with associated access and parking (landscaping and layout as reserved matters)

    11 May 2023 40m away Outline
  • 26/0876/FUL Refused

    58 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FE

    Change of use of existing amenity verge to residential curtilage to facilitate construction of two-storey side extension with front dormer; demolition of existing flank boundary wall and erection of new fence to extend private rear garden; removal of existing trees; new side pathway, landscaping and tree planting; new pitched roofs to existing front dormers; new pitched roof to front porch; conversion of garage into habitable accommodation; and extension to front driveway.

    28 May 2026 120m away Full applications
  • 26/0763/FUL Granted

    13 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

    Construction of outbuilding with veranda to rear garden.

    12 May 2026 151m away Full applications
  • 22/1016/DIS Decided

    The Windmill 34 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FD

    Discharge of Condition 4 (Archaeology) and Condition 5 (Landscape Management) pursuant to planning permission 21/0531/FUL

    20 May 2022 155m away Conditions
  • 22/0929/TPO Granted

    Chalmers Court Scots Hill Croxley Green Hertfordshire WD3 3AB

    Cedar - Reduce end weight on all branches, focusing primarily on branches not previously pruned. Remove major deadwood. Tree at the far end of the car park. See Tree Report for reduction. All arisings to be removed leaving a clean and tidy site.

    17 May 2022 155m away Trees
  • 20/1726/TPO Granted

    Chalmers Court Scots Hill Croxley Green WD3 3AB

    Cedar (T6) - Reduce lower large lateral limbs overhanging car park and corner of property by 2m. Recent branch failure on main lower lateral branch. Reduction to remaining branches to reduce end weight, and minimise future failure.

    21 Aug 2020 155m away Trees

In Three Rivers

  • 26/0842/CLPD Granted

    Dykewood Chorleywood Road Rickmansworth Hertfordshire WD3 4ES

    Certificate of Lawfulness Proposed Development: Installation of solar panels.

    26 May 2026 Lawful development
  • 26/0952/CLPD Granted

    54 Station Road Kings Langley Hertfordshire WD4 8LB

    Certificate of Lawfulness Proposed Development: Loft conversion including hip to gable roof extension; rear dormer, velux windows and construction of outbuilding to rear.

    11 Jun 2026 Lawful development
  • 26/1165/CLPD Awaiting decision

    30 Gable Close Abbots Langley Hertfordshire WD5 0LD

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

    20 Jul 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