9 Trewenna Drive Potters Bar Hertfordshire EN6 5JW

1. 8 Jun 2021

   Received by Hertsmere

2. 3 Aug 2021

   Decision issued: Grant Permission

3. 30 Jul 2026

   Added to PlanIndex

Hertsmere granted permission on 3 August 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.

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.

• 2 Chace Avenue Potters Bar Hertfordshire EN6 5LU

  TPO/2008/807 Submitted 7 Apr 2008 50 yards away

  OAK - Crown reduce by 30% and reduce tree canopy to allow 5m clearance from house roof

  Granted Trees

• 21 Trewenna Drive Potters Bar Hertfordshire EN6 5JW

  21/1615/HSE Submitted 5 Aug 2021 100 yards away

  Part single, part two storey side and rear extension to include a rear dormer with integral garage and demolition of rear garage.

  Refused Householder Extension Loft or dormer +1 6 docs
  Domestic

• 5 Chace Avenue Potters Bar Hertfordshire EN6 5LU

  23/0484/CLP Submitted 29 Mar 2023 100 yards away

  Single storey side extension following demolition of garage. Certificate of Lawful Development (Proposed).

  Granted Lawful development Extension Demolition 4 docs
  Small domestic

• 67 Cotton Road Potters Bar Hertfordshire EN6 5JJ

  26/1334/FUL Submitted 14 Sep 2026 100 yards away

  84% historically approved · decision due ~9 Nov

  Change of use from a 6 occupant HMO (use class C4) to a house of multiple occupancy for 7 occupants (HMO - Sui Generis), front boundary works to include dropped kerb, vehicular hardstanding and bin and bike storage.

  Awaiting decision Full applications

• 67 Cotton Road Potters Bar Hertfordshire EN6 5JJ

  26/0698/FUL Submitted 21 May 2026 100 yards away

  Change of use from a 6 occupant HMO (use class C4) to a house of multiple occupancy for 7 occupants (HMO - Sui Generis), front boundary works to include dropped kerb, vehicular hardstanding and bin and bike storage.

  Decided Full applications 11 docs

• 76 Cotton Road Potters Bar Hertfordshire EN6 5JH

  26/1361/TPO Submitted 29 Sep 2026 100 yards away

  75% historically approved · decision due ~24 Nov

  Species: 2 x Quercus (Oaks). Position: Rear lawn. T2 & T3 Hertsmere TPO Plan, marked T1 & T2 in sketch plan and Reason: Cyclical Maintenance / to manage crown extent and branch end-weight / maintain appropriate clearance from buildings and access routes, and support the continued retention of both trees. (T2) T1 Oak - Reduce the height by 2m, from approximately 17m to a final height of approximately 15m. Reduce lateral crown extensions on the northern, esterner by 2m, leaving fina crown radii, measured horizontally from the centre of the trunk of approximately; north 3m, east 4m, south retain existing 4m with no lateral reduction on this side, west retain the existing 2m spread, with no lateral reduction on this side. The resulting overall crown spread will be approximately 7m north-sounth and 6m east-west. No crown thinning proposed (T3) T2 Oak - Reduce the height by 2m, from approximately 18m to a final height of approximately 16m. Reduce lateral crown extensions by 2m on north, south and west side, leaving final crown radii, measured horizontally from the centre of the approximately: north 5m, east retain the 3m with no latral reduction on this side, south 6m, west retain the 6m with no lateral reduction on this side. The resulting overall crown spread will be approximately 11m north-south and 9m east-west. No crown thinning proposed

  Awaiting decision Trees

• 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