21 Trewenna Drive Potters Bar Hertfordshire EN6 5JW

1. 5 Aug 2021

   Received by Hertsmere

2. 30 Sep 2021

   Decision issued: Refuse Permission

3. 29 Sep 2026

   Added to PlanIndex

Hertsmere refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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.

• 9 Trewenna Drive Potters Bar Hertfordshire EN6 5JW

  21/1215/HSE Submitted 8 Jun 2021 100 yards away

  Conversion of garage to habitable room with change from garage door to window.

  Granted Householder Windows or glazing 9 docs
  Domestic

• 67 Cotton Road Potters Bar Hertfordshire EN6 5JJ

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

  83% 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

• 2 Chace Avenue Potters Bar Hertfordshire EN6 5LU

  TPO/2008/807 Submitted 7 Apr 2008 100 yards away

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

  Granted Trees

• 76 Cotton Road Potters Bar Hertfordshire EN6 5JH

  26/1361/TPO Submitted 29 Sep 2026 150 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

• 9 Penshurst Road Potters Bar Hertfordshire EN6 5JP

  22/2121/HSE Submitted 20 Dec 2022 150 yards away

  Conversion of garage to habitable room increasing the roof height to include loft accommodation, installation of rear dormer and 2 front roof lights (Amended description and plans received 09.03.23).

  Granted Householder Loft or dormer 9 docs
  Domestic

• 26/1234/HSE Granted

  66 Park Crescent Elstree Borehamwood Hertfordshire WD6 3PU

  Construction of swimming pool with associated hard landscaping.

  Received 26 Aug, published by the council 3 Sep 2026 Householder
• 26/1227/HSE Granted

  22 Pinewood Close Borehamwood Hertfordshire WD6 5NW

  Construction of part single, part two-storey rear extension, two-storey side extension including conversion of existing attached garage to habitable space, and alterations to fenestration.

  Received 26 Aug, published by the council 2 Sep 2026 Householder
• 26/1500/HSE Awaiting decision

  10 Oakridge Avenue Radlett Hertfordshire WD7 8EP

  Demolition of existing rear conservatory and erection of part single part two storey rear extension with alterations to fenestration.

  Received 19 Oct, published by the council 21 Oct 2026 Householder
• 26/1029/HSE Granted

  5 Elmroyd Avenue Potters Bar Hertfordshire EN6 2ED

  Installation of 8x solar panels.

  Received 23 Jul, published by the council 28 Aug 2026 Householder
• 26/1235/HSE Granted

  14 Neville Close Potters Bar Hertfordshire EN6 2AG

  Construction of single storey front, side and rear extension and alterations to fenestration.

  Received 26 Aug, published by the council 4 Sep 2026 Householder