21 Holbrook Gardens Aldenham Watford Hertfordshire WD25 8AB

1. 27 Oct 2026

   Received by Hertsmere

2. 4 Nov 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 22 December 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.

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.

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.

• Wall Hall Estate Yard Wall Hall Drive Aldenham Watford Hertfordshire

  TPO/2013/1766 Submitted 28 May 2013 150 yards away

  T40 SYCAMORE - Fell; T61 SYCAMORE - Fell

  Granted Trees

• 5 Middle Down Aldenham Watford Hertfordshire WD25 8BW

  23/0287/HSE Submitted 20 Feb 2023 150 yards away

  Conversion of loft space and alterations to fenestration.

  Granted Householder Windows or glazing 14 docs
  Domestic

• 1 Wall Hall Drive Aldenham Watford Hertfordshire WD25 8BY

  21/1151/HSE Submitted 28 May 2021 150 yards away

  Extension to existing rear dormer.

  Granted Householder Extension Loft or dormer 12 docs
  Domestic

• 6 Middle Down Aldenham Watford Hertfordshire WD25 8BW

  23/0289/TPO Submitted 21 Feb 2023 200 yards away

  T1 OAK. Crown reduce tree by 2m to leave a final height of 13.7m and a final spread of 9.1m

  Refused Trees 3 docs

• 6 Middle Down Aldenham Watford Hertfordshire WD25 8BW

  21/1081/TPO Submitted 19 May 2021 200 yards away

  T1 OAK Reduce crown reduce 45 foot high and 30 foot spread as per annotated photographs.

  Granted Trees 7 docs

• 6 Middle Down Aldenham Watford Hertfordshire WD25 8BW

  24/1311/TPO Submitted 10 Oct 2024 200 yards away

  T208 as per map of site. OAK. Reduce crown to 45Ft tall and 30Ft wide.

  Granted Trees 4 docs

• 26/1319/HSE Granted

  54 The Shrublands Potters Bar Hertfordshire EN6 2BW

  Single storey side extension and front porch.

  Received 10 Sep, published by the council 23 Sep 2026 Householder
• 26/1324/HSE Granted

  12 Nightingale Close Radlett Hertfordshire WD7 8NT

  Partial conversion of garage to habitable space, construction of single storey rear extension and front porch extension, alterations to fenestration.

  Received 11 Sep, published by the council 21 Sep 2026 Householder
• 26/1263/HSE Granted

  11 Juniper Gardens Shenley Radlett Hertfordshire WD7 9LA

  Single storey rear extension.

  Received 1 Sep, published by the council 23 Sep 2026 Householder
• 26/1303/HSE Granted

  14 Hartfield Avenue Elstree Borehamwood Hertfordshire WD6 3JE

  Alterations to fenestration to include replacement of garage door with window and side elevation window changes.

  Received 8 Sep, published by the council 15 Sep 2026 Householder
• 26/1248/HSE Granted

  24 Farm Way Bushey Hertfordshire WD23 3SS

  Single storey rear extension; single storey front extension to include porch, conversion of garage to habitable space and replacement of garage door with window; first floor side extension.

  Received 28 Aug, published by the council 4 Sep 2026 Householder