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Planning application

21 Tennison Avenue Borehamwood Hertfordshire WD6 2BG

Granted Hertsmere 21/0732/CLP Certificate Proposed Lawful Use/Dev

Works: Extension Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Part single storey rear and single storey side extension. Certificate of lawfulness (Proposed)

As published by the council, reference 21/0732/CLP

Application record

Reference
21/0732/CLP
Type
Certificate Proposed Lawful Use/Dev
Status
Decided
Decision
Granted As published: Grant Lawful Certificate (Proposed Dev)
Received
6 Apr 2021
Validated
8 Apr 2021
Decided
2 Jun 2021
Ward
Borehamwood Hillside
Parish
Elstree & Borehamwood Town Council
Decision by
Delegated Decision
Postcode
WD6 2BG

Timeline

Dates from the published record

  1. 6 Apr 2021

    Received by Hertsmere

  2. 8 Apr 2021

    Validated

    Checked as complete and ready for consideration.

  3. 2 Jun 2021

    Decision issued: Grant Lawful Certificate (Proposed Dev)

  4. 9 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Life-U Design Agent, a design practice

37 applications on PlanIndex · across 9 councils · 89% granted

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Documents

Plans, drawings, consultee responses and the officer's report

8 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Hertsmere granted permission on 2 June 2021, 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.

About lawful development applications

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.

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In Hertsmere

  • 26/1156/CLP Decided

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  • 26/1507/CLP Awaiting decision

    30 Ladbrooke Drive Potters Bar Hertfordshire EN6 1QR

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    Received 19 Oct, published by the council 22 Oct 2026 Lawful development
  • 26/1494/CLP Awaiting decision

    32 Billy Lows Lane Potters Bar Hertfordshire EN6 1XN

    Demolition of existing garage and temporary shed to facilitate construction of single storey side extension, conversion of loft to habitable space to include hip to gable roof alterations, rear dormer and 4x front rooflights Certificate of Lawful Development (Proposed).

    Received 16 Oct, published by the council 21 Oct 2026 Lawful development
  • 26/1489/CLP Awaiting decision

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    Received 15 Oct, published by the council 20 Oct 2026 Lawful development
  • 26/1258/CLP Granted

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    Received 1 Sep, published by the council 8 Sep 2026 Lawful development