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Planning application

23/1838/CLPD

Hyde House Old Uxbridge Road West Hyde Rickmansworth Hertfordshire WD3 9XH

Granted Three Rivers Certificate of Lawfulness - Proposed Use

Proposal

Certificate of Lawfulness Proposed Development: Conversion of existing outbuilding to annexe including the installation of solar panels, alterations to fenestration and rooflights

As published by the council, reference 23/1838/CLPD

Timeline

Dates from the published record

  1. 31 Oct 2023

    Received by Three Rivers

  2. 2 Nov 2023

    Validated

    Checked as complete and ready for consideration.

  3. 17 Jan 2024

    Decision issued: approved

  4. 24 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

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.

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

  • 23/1940/FUL Granted

    Hyde House Old Uxbridge Road West Hyde Rickmansworth Hertfordshire WD3 9XH

    Construction of single storey rear extension; replacement of doors with windows; and addition of two windows to front elevation

    16 Nov 2023 0m away Full applications
  • 25/1283/FUL Refused

    114 Denham Way Maple Cross Rickmansworth Hertfordshire WD3 9SP

    Construction of part-single storey, part-two storey rear extensions; loft conversion including rear dormer and front rooflights

    29 Jul 2025 178m away Full applications
  • 22/0964/FUL Granted

    84 Denham Way Maple Cross Hertfordshire WD3 9SP

    Single storey front and side extension

    20 May 2022 254m away Full applications
  • 22/0795/PDE Granted

    84 Denham Way Maple Cross Rickmansworth Hertfordshire WD3 9SP

    Prior Approval: Single storey rear extension (depth 4m, maximum height 3.15m, eaves height 2.89m)

    27 Apr 2022 256m away Outline
  • 20/2184/FUL Granted

    28 Woodland Road Maple Cross WD3 9SU

    Demolition of attached garage and construction of single storey side extension

    16 Oct 2020 276m away Full applications
  • 20/1740/FUL Granted

    75 Denham Way Maple Cross WD3 9SL

    Construction of detached annexe and increase in fence height

    24 Aug 2020 341m away Full applications

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