37 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ

1. 1 Sep 2021

   Received by Hertsmere

2. 8 Sep 2021

   Validated

   Checked as complete and ready for consideration.

3. 6 Oct 2021

   Decision issued: PD42 - Prior Approval not required

4. 29 Sep 2026

   Added to PlanIndex

Hertsmere granted permission on 6 October 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.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 39 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ

  21/1895/MA Submitted 17 Sep 2021 50 yards away

  Application for a non-material amendment to allow for insertion of additional window to side elevation and alterations to rear fenestration following the grant of planning permission ref 20/2070/HSE.

  Granted Amendments Windows or glazing 4 docs

• 72 Cardinal Avenue Borehamwood Hertfordshire WD6 1ES

  26/1196/FUL Submitted 18 Aug 2026 100 yards away

  83% historically approved · decision due ~13 Oct

  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.

  Awaiting decision Full applications Extension Loft or dormer +1 15 docs

• 21 & 23 Hillside Avenue Borehamwood Hertfordshire WD6 1HG

  21/0874/FUL Submitted 21 Apr 2021 100 yards away

  Two storey rear extension to No.21 and first floor rear extension to No.23.

  Granted Full applications Extension 12 docs

• 76 Whitehouse Avenue Borehamwood Hertfordshire WD6 1HD

  24/1182/HSE Submitted 16 Sep 2024 100 yards away

  Construction of front porch and part single, part two storey rear extension, conversion of loft to habitable space with associated hip to gable roof alterations and rear dormer, and alterations to fenestration.

  Granted Householder Extension Loft or dormer +2 14 docs
  Small domestic

• 59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ

  21/0947/CLP Submitted 30 Apr 2021 100 yards away

  Conversion of loft to habitable room with hip to gable roof alterations, rear dormer, new side window, and 3 front rooflights. Certificate of Lawful Development (proposed).

  Granted Lawful development Loft or dormer Roofing +1 10 docs

• 59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ

  21/0948/HSE Submitted 30 Apr 2021 100 yards away

  Construction of single storey front, side and rear extensions, following demolition of existing conservatory.

  Granted Householder Extension Demolition 11 docs
  Small domestic

• 26/0496/PD56M Granted

  Metropolitan House Darkes Lane Potters Bar Hertfordshire EN6 1AG

  Change of use from Office (Class E) to Residential (Class C3) for 96 flats.

  Received 13 Apr, published by the council 24 Jul 2026 Prior approval
• 26/0919/PD42 Awaiting decision

  77 Manor Way Borehamwood Hertfordshire WD6 1QR

  Single storey rear extension. Depth: 6.0m Height: 3.2m, Eaves: 2.4m.

  Received 6 Jul, published by the council 24 Jul 2026 Prior approval
• 26/0911/PD28O Awaiting decision

  The Mercure Hotel And Land To South East Tylers Way Watford Hertfordshire WD25 8JH

  Demolition of the existing buildings at the Former Mercure Hotel (Application for Prior Notification).

  Received 2 Jul, published by the council 24 Jul 2026 Prior approval
• 26/0075/PD56M Decided

  3 Wyllyotts Place Potters Bar Hertfordshire EN6 2JD

  Change of use from Class E to Class C3 to facilitate conversion of offices into 5 self contained flats.

  Received 21 Jan, published by the council 9 Aug 2026 Prior approval
• 26/0526/PD42 Granted

  20 Kenilworth Drive Borehamwood Hertfordshire WD6 1QW

  Single storey rear extension. Depth: 6.00m, Height: 2.95m, Eaves: 2.75m.

  Received 20 Apr, published by the council 9 Aug 2026 Prior approval