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Planning application

129 Cowley Hill Borehamwood Hertfordshire WD6 5NA

Awaiting decision Hertsmere 26/0990/HSE Householder Application

Works: Extension Loft or dormer 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 existing outbuildings to facilitate construction of two storey side extension with associated roof works and 2x front rooflights, single storey rear extension with associated roof works and conversion of garage to habitable space to include replacement of garage door with window.

As published by the council, reference 26/0990/HSE

Application record

Reference
26/0990/HSE
Type
Householder Application
Status
Awaiting decision
Received
20 Jul 2026
Validated
11 Aug 2026
Ward
Borehamwood Cowley Hill
Parish
Elstree & Borehamwood Town Council
Postcode
WD6 5NA

Timeline

Dates from the published record

  1. 20 Jul 2026

    Received by Hertsmere

  2. 11 Aug 2026

    Validated

    Checked as complete and ready for consideration.

  3. 12 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 6 October 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 57 days over the applications it decided in the last year.

Documents

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

4 documents on file for this application

  • Location plan, existing & proposed plans and elevations Drawing/Plans · 11 Aug 2026
  • Applicationformredacted Application Form · 20 Jul 2026
  • Attachmentsummary One App Attachments · 20 Jul 2026
  • 129 cowley hill - household plannng permission - cover letter Supporting Documents · 20 Jul 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 householder applications in a median of 65 days. More in our guide to how long planning decisions take.

About householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 62 Stanborough Avenue Borehamwood Hertfordshire WD6 5LP

    22/2031/HSE Submitted 5 Dec 2022 50 yards away

    Part single, part two storey side extension and single-storey rear extension following demolition of conservatory, alterations to fenestration.

    Granted Householder Extension Demolition +1 13 docs
    Small domestic

  • 62 Stanborough Avenue Borehamwood Hertfordshire WD6 5LP

    26/0269/HSE Submitted 2 Mar 2026 50 yards away

    92% historically approved · decision due ~27 Apr

    Front boundary works to include dropped kerb and vehicular hardstanding.

    Awaiting decision Householder 20 docs
    Small domestic

  • 82 And 84 Stanborough Avenue Borehamwood

    TP/11/0137 Submitted 24 Jan 2011 100 yards away

    Front and rear extensions to existing dwellings and construction of two storey detached dwelling on land between Nos 82 and 84. (Amended plans received 20/6/2011 & 13/7/2011).

    Granted Full applications New dwelling Extension 70 docs
    Domestic

  • 2 Abbots Place Borehamwood Hertfordshire WD6 5QP

    21/0800/HSE Submitted 13 Apr 2021 100 yards away

    Single storey side and rear extensions following demolition of existing garage.

    Granted Householder Extension Demolition 7 docs
    Small domestic

  • 9 Abbots Place Borehamwood Hertfordshire WD6 5QP

    25/0024/PD42 Submitted 13 Jan 2025 100 yards away

    Single storey rear extension Depth: 5.00m, Height: 3.00m, Eaves: 3.00m.

    Withdrawn Prior approval Extension 16 docs
    Small domestic

  • 9 Abbots Place Borehamwood Hertfordshire WD6 5QP

    25/0023/CLP Submitted 13 Jan 2025 100 yards away

    Conversion of loft to habitable space to include hip to gable roof alterations, construction of rear dormer and insertion of 2x front rooflights Certificate of Lawful Development (Proposed).

    Withdrawn Lawful development Loft or dormer Roofing 17 docs

In Hertsmere

  • 26/0805/HSE Granted

    Rydal Mount Lodge Baker Street Potters Bar Hertfordshire EN6 2BP

    Demolition of existing conservatory to facilitate construction of single storey rear extension and front porch extension.

    Received 10 Jun, published by the council 24 Jul 2026 Householder
  • 26/1218/HSE Refused

    22 The Grove Radlett Hertfordshire WD7 7NF

    Conversion of garage to habitable space with window to replace garage door and new pitched roof, construction of first floor side extension and part single, part two storey rear extension with insertion of 1x side rooflight, alterations to fenestration and front hard landscaping.

    Received 24 Aug, published by the council 1 Sep 2026 Householder
  • 26/1253/HSE Granted

    159 Arundel Drive Borehamwood Hertfordshire WD6 2LZ

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

    Received 28 Aug, published by the council 4 Sep 2026 Householder
  • 26/1250/HSE Granted

    3 The Walk Potters Bar Hertfordshire EN6 1QL

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

    Received 28 Aug, published by the council 4 Sep 2026 Householder
  • 26/1075/HSE Granted

    7 Belmor Elstree Borehamwood Hertfordshire WD6 3JX

    Proposed boundary treatments to the rear of the property including replacement fence.

    Received 31 Jul, published by the council 12 Aug 2026 Householder