12 Grenville Avenue, Broxbourne, Hertfordshire, EN10 7DH

1. 30 Mar 2026

   Received by Broxbourne

2. 9 Jun 2026

   Decision issued: CONDITIONAL APPROVAL

3. 9 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 9 Grenville Avenue, Broxbourne, Hertfordshire, EN10 7DH

  07/26/0120/HF Submitted 11 Feb 2026 35m away

  First-floor side extension, loft conversion with rear dormer and 2 no. rooflights

  Granted Householder Extension Loft or dormer 8 docs
  Domestic

• 2 Grenville Avenue, Broxbourne, Hertfordshire, EN10 7DH

  07/26/0582/F Submitted 16 Jul 2026 50m away

  80% historically approved · decision due ~10 Sep

  Retrospective change of use from Class B1(a) (office) to Class Sui Generis (pet groomers)

  Awaiting decision Full applications 7 docs

• 19 Trafalgar Avenue, Broxbourne, Hertfordshire, EN10 7DJ

  07/25/0612/DRC Submitted 21 Jul 2025 70m away

  Application for the approval of details reserved by condition no.3 (Materials List) fo planning permission ref. (07/25/0051/HF) Demolition of existing dwelling and erection of a replacement two storey dwelling (resubmission of 07/21/0835/F)

  Withdrawn Demolition 4 docs
  Domestic

• 14 Trafalgar Avenue, Broxbourne, Hertfordshire, EN10 7DX

  07/26/0603/HF Submitted 28 Jul 2026 83m away

  89% historically approved · decision due ~22 Sep

  Single storey rear extension to replace existing conservatory

  Awaiting decision Householder Extension 11 docs
  Small domestic

• 12 Trafalgar Avenue, Broxbourne, Hertfordshire, EN10 7DX

  07/26/0649/HF Submitted 18 Aug 2026 84m away

  89% historically approved · decision due ~13 Oct

  Single storey front, side and rear extension, first floor side and rear extension and alterations to roof on side elevation

  Awaiting decision Householder Extension 5 docs
  Small domestic

• 22 Monson Road, Broxbourne, Hertfordshire, EN10 7DY

  07/19/1001/LDP Submitted 20 Nov 2019 96m away

  Certificate of lawfulness for conversion of garage to habitable room including replacement of garage door with window

  Granted Lawful development Windows or glazing 4 docs

• 07/26/0435/HF Granted

  118 Cuffley Hill, -, Goffs Oak, Hertfordshire, EN7 5EY

  Part demolition of existing side extension and erection of a part single-storey, part two-storey extension to the side and rear elevations, infilling of the existing porch and erection of a new porch, alterations to fenestration and provision of a raised patio area

  2 Jun 2026 Householder
• 07/26/0680/HF Awaiting decision

  2 Gaywood Avenue, Cheshunt, Hertfordshire, EN8 8QD

  Two storey side and part two storey, part single storey rear extension (Resubmission of 07/18/0361/HF)

  2 Sep 2026 Householder
• 07/26/0454/HF Granted

  34 Hilltop Close, Cheshunt, Hertfordshire, EN7 6QN

  Single storey rear extension with flat roof and lantern, single storey front extension with pitched roof and 3no. roof lights and conversion of garage to habitable room

  8 Jun 2026 Householder
• 07/26/0534/HF Granted

  18A Blackdale, Cheshunt, Hertfordshire, EN7 6DF

  First floor rear extension

  6 Jul 2026 Householder
• 07/26/0531/HF Granted

  1 Palmers Way, Cheshunt, Hertfordshire, EN8 9HT

  Single storey rear extension

  3 Jul 2026 Householder