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Planning application

24/1248/CLP

58 Thornbury Gardens Borehamwood Hertfordshire WD6 1RE

Granted Hertsmere Certificate Proposed Lawful Use/Dev

Proposal

Conversion of loft to habitable space including rear dormer. Certificate of lawful development (Proposed).

As published by the council, reference 24/1248/CLP

Timeline

Dates from the published record

  1. 30 Sep 2024

    Received by Hertsmere

  2. 1 Oct 2024

    Validated

    Checked as complete and ready for consideration.

  3. 4 Nov 2024

    Decision issued: Grant Lawful Certificate (Proposed Dev)

  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

  • 24/1154/CLP Granted

    58 Thornbury Gardens Borehamwood Hertfordshire WD6 1RE

    Change of use from C3 to C4 (5 person HMO). Demolition of existing outbuilding to allow for single storey rear extension.

    10 Sep 2024 0m away Lawful development
  • 24/1155/HSE Granted

    58 Thornbury Gardens Borehamwood Hertfordshire WD6 1RE

    Part single part two storey rear extension following demolition of outbuilding.

    10 Sep 2024 0m away Householder
  • 26/0831/PD42 Granted

    62 Thornbury Gardens Borehamwood Hertfordshire WD6 1RE

    Single storey rear extension. Depth: 5.90m, Height: 3.27m, Eaves: 3.00m.

    16 Jun 2026 18m away Prior approval
  • 26/0629/HSE Granted

    87 Manor Way Borehamwood Hertfordshire WD6 1QR

    Demolition of existing outbuilding and construction of single storey side extension with associated roof alterations.

    11 May 2026 145m away Householder
  • 26/0919/PD42 Awaiting decision

    77 Manor Way Borehamwood Hertfordshire WD6 1QR

    Single storey rear extension. Depth: 6.0m Height: 3.2m, Eaves: 2.4m.

    6 Jul 2026 145m away Prior approval
  • 26/0902/FUL Awaiting decision

    142 Manor Way Borehamwood Hertfordshire WD6 1QX

    Retrospective application for the demolition of outbuilding and construction of replacement.

    29 Jun 2026 167m 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