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Planning application

12 Grantham Green Borehamwood Hertfordshire WD6 2JJ

Granted Hertsmere 26/0270/HSE Householder Application

Works: Extension Loft or dormer 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

Single storey rear and side extensions, insertion of 1x rear roof light. (Part-retrospective).

As published by the council, reference 26/0270/HSE

Application record

Reference
26/0270/HSE
Type
Householder Application
Status
Decided
Decision
Grant Permission
Received
2 Mar 2026
Validated
12 Mar 2026
Decided
11 Jun 2026
Ward
Borehamwood Hillside
Parish
Elstree & Borehamwood Town Council
Decision by
Delegated Decision
Postcode
WD6 2JJ

Timeline

Dates from the published record

  1. 2 Mar 2026

    Received by Hertsmere

  2. 12 Mar 2026

    Validated

    Checked as complete and ready for consideration.

  3. 11 Jun 2026

    Decision issued: Grant Permission

  4. 9 Aug 2026

    Added to PlanIndex

Documents

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

11 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.

Trade members open them from here.

Open the documents

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 householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 20 Grantham Green Borehamwood Hertfordshire WD6 2JJ

    21/0837/CLP Submitted 19 Apr 2021 32m away

    Conversion of loft to habitable room with rear dormer and 1 rooflight to front. Certificate of lawfulness (Proposed).

    Granted Lawful development Loft or dormer 7 docs

  • 54 Dacre Gardens Borehamwood Hertfordshire WD6 2JW

    24/1127/CLP Submitted 3 Sep 2024 47m away

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

    Granted Lawful development Extension Loft or dormer +1 11 docs
    Small domestic

  • 16 Burghley Avenue Borehamwood Hertfordshire WD6 2JF

    26/0734/HSE Submitted 28 May 2026 79m away

    90% historically approved · decision due ~23 Jul

    Single story rear extension.

    Decided Householder Extension 3 docs
    Domestic

  • 57 Grantham Green Borehamwood Hertfordshire WD6 2JQ

    26/0772/CLP Submitted 4 Jun 2026 90m away

    78% historically approved · decision due ~30 Jul

    Conversion of loft to habitable space including rear dormer and 3x front roof lights. Certificate of lawful development (Proposed).

    Decided Lawful development Loft or dormer 8 docs

  • 24 Burghley Avenue Borehamwood Hertfordshire WD6 2JF

    23/0063/HSE Submitted 13 Jan 2023 91m away

    Insertion of dormer window to rear elevation.

    Withdrawn Householder Loft or dormer Windows or glazing 5 docs
    Domestic

  • 16 Burghley Avenue Borehamwood Hertfordshire WD6 2JF

    26/0359/CLP Submitted 18 Mar 2026 96m away

    Construction of front porch and outbuilding to rear garden. Certificate of Lawful Development (Proposed).

    Granted Lawful development Extension 5 docs
    Small domestic

In Hertsmere

  • 26/1262/HSE Awaiting decision

    Roundbush House Round Bush Lane Aldenham Watford Hertfordshire WD25 8BG

    Construction of attached double garage with pitched roof.

    1 Sep 2026 Householder
  • 26/1260/HSE Awaiting decision

    26 Caishowe Road Borehamwood Hertfordshire WD6 5JA

    Demolition of existing outbuilding to facilitate construction of single storey side and rear extension.

    1 Sep 2026 Householder
  • 26/1255/HSE Awaiting decision

    33 Coldharbour Lane Bushey Hertfordshire WD23 4NU

    Demolition of rear conservatory and existing two storey side extension; construction of part single, part two storey side and rear extension and two storey front extension with relocation of front entrance; conversion of loft to habitable space with associated hip to gable roof extensions, rear dormer with 2x Juliette balconies and insertion of 2x front and 4x side rooflights; 3x rear Juliette balconies at first floor level, alterations to side bay extension, alterations to fenestration and removal of 2x chimney stacks.

    28 Aug 2026 Householder
  • 26/1253/HSE Awaiting decision

    159 Arundel Drive Borehamwood Hertfordshire WD6 2LZ

    Construction of single storey rear extension with pitched roof and 3x rooflights, and alterations to fenestration.

    28 Aug 2026 Householder
  • 26/1250/HSE Awaiting decision

    3 The Walk Potters Bar Hertfordshire EN6 1QL

    Single storey side extension following demolition of existing detached garage and shed.

    28 Aug 2026 Householder