11 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

1. 23 Aug 2016

   Received by St Albans

2. 25 Aug 2016

   Validated

   Checked as complete and ready for consideration.

3. 17 Oct 2016

   Decision issued: DC4 Refusal

4. 15 Aug 2026

   Added to PlanIndex

This application is at appeal, which passes the decision from St Albans to the planning inspectorate, and the outcome will replace the council's decision. 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.

• 31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

  5/2026/1558 Submitted 20 Aug 2026 50 yards away

  Certificate of Lawfulness ( Proposed) - Proposed rear single-storey extension, side single-storey extension and removal of rear chimney stack

  Granted Lawful development Extension 8 docs
  Small domestic

• 31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

  5/2026/0140 Submitted 27 Jan 2026 50 yards away

  Proposed single-storey rear extension with rooflights, two-storey side extension and new rear roof dormer along with rooflights to the front. New front porch and internal alterations following demolition to the existing detached garage

  Withdrawn Extension Loft or dormer +1 11 docs
  Small domestic

• 31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

  5/2026/1324 Submitted 8 Jul 2026 50 yards away

  Certificate of Lawfulness (proposed) - Proposed rear single-storey extension, side single-storey extension, removal of rear chimney stack and replacement porch

  Refused Lawful development Extension 9 docs
  Small domestic

• 38 Highfield Avenue Harpenden Hertfordshire Al5 5Ua

  5/2017/3050 Submitted 30 Oct 2017 50 yards away

  Two storey rear and side extension, single storey rear extension, new front porch, hip to gable roof extension, loft conversion with rear dormer window, partial garage conversion, alterations to openings and installation of rooflights

  Granted Householder Extension Loft or dormer +1 10 docs
  Small domestic

• 81 Topstreet Way Harpenden Hertfordshire Al5 5Ty

  5/2017/2594 Submitted 17 Sep 2017 150 yards away

  Hip to half-hipped roof extensions, loft conversion with rear dormer window and insertion of openings

  Granted Householder Extension Loft or dormer +1 11 docs
  Domestic

• 75 Topstreet Way Harpenden Hertfordshire Al5 5Ty

  5/2017/2834 Submitted 8 Oct 2017 150 yards away

  Single storey front, two storey side extension, alterations to openings and loft conversion with roof alterations, rear dormer window and front rooflights

  Granted Householder Extension Loft or dormer +2 10 docs
  Small domestic

• 5/2026/0517 Granted

  28 White Hedge Drive St Albans Hertfordshire Al3 5Tt

  Proposed two-storey rear extension, loft conversion, and alterations to the existing front entrance porch

  Received 16 Mar, published by the council 31 Aug 2026 Householder
• 5/2026/1055 Granted

  39 Oakwood Drive St Albans Hertfordshire Al4 0Ul

  Erection of a part single-storey, part two-storey wraparound extension, loft conversion including a rear dormer and rooflights, and construction of a front porch

  Received 1 Jun, published by the council 24 Jul 2026 Householder
• 5/2026/1278 Granted

  39 Foxcroft St Albans Hertfordshire Al1 5Ss

  Proposed C3 residential extension including two storey front and single storey front and side with internal alterations

  Received 1 Jul, published by the council 24 Jul 2026 Householder
• 5/2026/1170 Granted

  20 Nimrod Close St Albans Hertfordshire Al4 9Xy

  Extension of existing raised rear terrace with privacy screening and associated alterations to rear fenestration

  Received 17 Jun, published by the council 24 Jul 2026 Householder
• 5/2026/1338 Granted

  16 Hunters Ride Bricket Wood Hertfordshire Al2 3Lx

  Proposed front porch

  Received 11 Jul, published by the council 9 Aug 2026 Householder