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Planning application

10 And 12 Grange Road Elstree Borehamwood Hertfordshire WD6 3LY

Awaiting decision Hertsmere 26/0854/FUL Full Planning Permission

Works: Extension Loft or dormer Roofing Demolition Windows or glazing Small domestic

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

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Demolition of no. 12's existing garage and no. 10's outbuilding to facilitate construction of two storey side and rear extension across both properties, conversion of loft to habitable space to include increase to ridge height, 2x rear dormers and 2x front and side rooflights across both properties. Single storey front extension to no.12 and alterations to fenestration.

As published by the council, reference 26/0854/FUL

Application record

Reference
26/0854/FUL
Type
Full Planning Permission
Status
Awaiting decision
Received
19 Jun 2026
Validated
1 Jul 2026
Ward
Elstree
Parish
Elstree & Borehamwood Town Council
Postcode
WD6 3LY

Timeline

Dates from the published record

  1. 19 Jun 2026

    Received by Hertsmere

  2. 1 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 24 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 26 August 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Hertsmere took a median of 56 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Natalie Leiwy Architects Agent, an architecture practice registered in Edgware

Active · incorporated 2012 · Edgware

17 applications on PlanIndex · across 4 councils · 100% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

28 documents on file for this application

  • Bng metric Supporting Documents · 03 Sep 2026
  • Cil exemption form CIL · 20 Aug 2026
  • New application form Application Form · 07 Jul 2026
  • Consultee comment submitted online Consultee Comment · 07 Jul 2026
  • Cil form 1 CIL · 01 Jul 2026
  • Location plan Drawing/Plans · 19 Jun 2026
  • Planning statement Supporting Documents · 19 Jun 2026
  • Cover letter Supporting Documents · 19 Jun 2026
  • Photos_10 and 12 grange road Supporting Documents · 19 Jun 2026
  • Existing ground floor plan Drawing/Plans · 19 Jun 2026
  • Existing first floor plan Drawing/Plans · 19 Jun 2026
  • Existing roof plans Drawing/Plans · 19 Jun 2026
  • Existing front & rear elevation Drawing/Plans · 19 Jun 2026
  • Existing side elevations Drawing/Plans · 19 Jun 2026
  • Existing side elevations Drawing/Plans · 19 Jun 2026
  • Proposed ground floor plans Drawing/Plans · 19 Jun 2026
  • Proposed first floor plans Drawing/Plans · 19 Jun 2026
  • Proposed loft floor plans Drawing/Plans · 19 Jun 2026
  • Proposed roof plans Drawing/Plans · 19 Jun 2026
  • Proposed front & rear elevations Drawing/Plans · 19 Jun 2026
  • Proposed side elevations Drawing/Plans · 19 Jun 2026
  • Proposed side elevations Drawing/Plans · 19 Jun 2026
  • Existing block plan Drawing/Plans · 19 Jun 2026
  • Proposed block plan Drawing/Plans · 19 Jun 2026

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What happens while it is decided

This application is with Hertsmere for determination, against a statutory target of eight weeks. Over the last year Hertsmere decided full applications in a median of 88 days. More in our guide to how long planning decisions take.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 10 Grange Road Elstree Borehamwood Hertfordshire WD6 3LY

    26/0384/FUL Submitted 23 Mar 2026 50 yards away

    Demolition of existing outbuilding and greenhouse to facilitate construction of two storey side and rear extension. Conversion of loft to habitable space to include hip to gable roof alterations, rear dormer and 2x rooflights. Front facade extension to bring in line with building.

    Withdrawn Full applications Extension Loft or dormer +2 19 docs
  • 20 Grange Road Elstree Borehamwood Hertfordshire WD6 3LY

    26/1025/HSE Submitted 23 Jul 2026 50 yards away

    Single storey rear extension.

    Decided Householder Extension 7 docs
    Small domestic
  • 22 The Rise Elstree Borehamwood WD6 3JU

    13/2195/HSE Submitted 16 Oct 2013 100 yards away

    Part single, part two storey rear extension; First floor front extension; Two storey front extension; Increase in height of roof of two storey left hand wing; Increase in roof pitch of single storey side wing; Removal of rear porch and chimney; Removal and insertion of windows in side elevations; Conversion of garage into gym store and wc; Loft conversion with 2 rear dormer windows and velux windows.

    Granted Householder Extension Loft or dormer +1 24 docs
    Small domestic
  • 11 Grange Road Elstree Borehamwood Hertfordshire WD6 3LY

    21/1125/HSE Submitted 26 May 2021 100 yards away

    Conversion of garage to habitable space to include removal of garage door and insertion of window to front elevation, construction of first floor rear extension and alterations to rear fenestration.

    Granted Householder Extension Windows or glazing 10 docs
    Domestic
  • 12 The Rise Elstree Borehamwood Hertfordshire WD6 3JU

    23/0226/HSE Submitted 9 Feb 2023 100 yards away

    Single storey rear extension, first floor side extension, front porch canopy, enlargement of habitable loft space and rear dormer, and alterations to fenestration.

    Granted Householder Extension Loft or dormer +1 12 docs
    Small domestic
  • 5 Grange Road Elstree Borehamwood Hertfordshire WD6 3LY

    22/1981/HSE Submitted 29 Nov 2022 100 yards away

    Construction of a part single, part two storey front extension, part single storey, part two storey rear extension, single storey side extension, and alterations to fenestration. Conversion of loft to habitable space with associated roof alterations to include and increase in ridge height, insertion of 2 x rear cabrio balconies and 4 x front roof lights. Associated landscaping works to allow for additional parking on existing driveway and new levelled garden patio to rear (Amended plans received 12.12.22 - solar panels added to roof and air conditioning units added to side elevation facing number 7).

    Granted Householder Extension Loft or dormer +2 16 docs
    Small domestic

In Hertsmere

  • 26/1282/FUL Granted

    188 Mutton Lane Potters Bar Hertfordshire EN6 2AW

    Change of use from class C4 (6 bedroom HMO) to sui generis (7 bedroom HMO) use facilitated by internal alterations, loft extension and bin and bike storage.

    Received 3 Sep, published by the council 10 Sep 2026 Full applications
  • 26/0914/FUL Granted

    24 Southgate Road Potters Bar Hertfordshire EN6 5DZ

    Change of use from class C3 to sui generis 10 bedroom HMO use facilitated by demolition of existing conservatory to facilitate construction of single storey rear extension. Conversion of garage to habitable space to include replacement of garage doors with window. Conversion of loft to habitable space to include rear dormer, 2x front rooflights, alterations to fenestration and alterations to roof. Construction of first floor front/ side extension. Alterations to hard landscaping, bin and bike storage.

    Received 3 Jul, published by the council 24 Jul 2026 Full applications
  • 26/1131/FUL Granted

    Unit 12 Hamilton Business Park Stirling Way Borehamwood Hertfordshire WD6 2FR

    Part first part second floor extension with associated roof alterations.

    Received 10 Aug, published by the council 14 Aug 2026 Full applications
  • 26/1196/FUL Granted

    72 Cardinal Avenue Borehamwood Hertfordshire WD6 1ES

    Amendment to 25/1574/FUL to include conversion of loft to habitable space with hip-to-gable roof extension and rear dormer, with associated roof alterations.

    Received 18 Aug, published by the council 19 Aug 2026 Full applications
  • 26/0902/FUL Granted

    142 Manor Way Borehamwood Hertfordshire WD6 1QX

    Part retrospective application for the retention of an outbuilding and the installation of a rear access door in connection with the commercial unit (amended description).

    Received 29 Jun, published by the council 30 Jul 2026 Full applications