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Planning application

24/1354/CLP

40 Craigweil Avenue Radlett Hertfordshire WD7 7EY

Granted Hertsmere Certificate Proposed Lawful Use/Dev

Proposal

Conversion of garage to habitable space to include replacement of garage door with window. Certificate of Lawful Development (Proposed).

As published by the council, reference 24/1354/CLP

Timeline

Dates from the published record

  1. 21 Oct 2024

    Received by Hertsmere

  2. 18 Nov 2024

    Decision issued: Grant Lawful Certificate (Proposed Dev)

  3. 30 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

  • TP/09/1684 Granted

    23 Canons Close Radlett WD7 7ER

    *Electronic documents only, no paper fileErection of a single storey side extension and insertion of side window

    1 Oct 2009 51m away Householder
  • TP/10/1592 Granted

    40 Newberries Avenue Radlett WD7 7EP

    *Electronic documents only, no paper fileErection of a two storey rear extension, a two storey side extension and a single storey side extension including conversion of existing garage into a habitable room (amended plans received 10/9/2010).

    11 Aug 2010 137m away Householder
  • 26/0810/CLE Awaiting decision

    4 Newberries Avenue Radlett Hertfordshire WD7 7EW

    Retention of clear glass window with opening large pane, facing No 6 Newberries Avenue. Certificate of Lawful Development (Existing).

    11 Jun 2026 160m away Lawful development
  • 26/0395/VOC Awaiting decision

    4 Newberries Avenue Radlett Hertfordshire WD7 7EW

    Variation of condition 2 (openings) to allow for removal of opaque glass window and replacement clear glass window following grant of planning permission TP/09/1253.

    25 Mar 2026 160m away Amendments
  • 24/1206/CLP Refused

    77 Newberries Avenue Radlett Hertfordshire WD7 7EL

    Conversion of loft to habitable space to include hip to gable roof alterations, rear dormer, insertion of 4x front rooflights and removal of chimney stack. Construction of single storey rear outbuilding. Certificate of Lawful Development (Proposed).

    20 Sep 2024 224m away Lawful development
  • 24/1041/FUL Withdrawn

    1 Craigweil Avenue Radlett Hertfordshire WD7 7ES

    Single storey front, side and rear extension to existing dwelling following demolition of garage. Erection of a detached single storey 3x bed house adjacent to 1 Craigweil Avenue with associated works and landscaping.

    12 Aug 2024 244m away Full applications

In Hertsmere

  • 26/0872/CLP Granted

    118 Theobald Street Borehamwood Hertfordshire WD6 4PA

    Conversion of loft to habitable space with associated hip to gable roof alterations, to include rear dormer, insertion of 3x front rooflights and removal of chimney stack. Certificate of Lawful Development (Proposed).

    24 Jun 2026 Lawful development
  • 26/0681/CLP Granted

    40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    Conversion of loft to habitable space to include rear dormer, 3x front rooflights and removal of chimney stack Certificate of Lawful Development (Proposed).

    19 May 2026 Lawful development
  • 26/1014/CLP Awaiting decision

    24 Mount Grace Road Potters Bar Hertfordshire EN6 1RD

    Construction of a single-storey outbuilding within the rear garden. Certificate of Lawful Development (Proposed).

    22 Jul 2026 Lawful development
  • 26/1015/CLP Awaiting decision

    24 Mount Grace Road Potters Bar Hertfordshire EN6 1RD

    Construction of a single-storey BBQ within the garden. Certificate of Lawful Development (Proposed).

    22 Jul 2026 Lawful development
  • 26/1011/CLE Awaiting decision

    6 Brickfield Cottages Theobald Street Borehamwood Hertfordshire WD6 4SD

    Construction of a single-storey detached outbuilding within the rear garden of the existing dwellinghouse for use as a private gym incidental to the enjoyment of the main dwelling (Use Class C3). Certificate of Lawful Development (Existing).

    21 Jul 2026 Lawful development