55 Cowper Road Harpenden Hertfordshire Al5 5Nj

1. 9 Mar 2026

   Received by St Albans

2. 10 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 23 Jul 2026

   Decision issued: DC3 Conditional Permission

4. 7 Sep 2026

   Added to PlanIndex

St Albans granted permission on 23 July 2026, 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.

• 41 Cowper Road Harpenden Hertfordshire Al5 5Nj

  TP/2025/0546 Submitted 16 Oct 2025 50 yards away

  T1 - Lime, remove to ground level as causing subsidence to 41 Cowper Road AL5 5NJ

  Granted Trees 2 docs

• 57A Cowper Road Harpenden Hertfordshire

  5/2017/2677 Submitted 21 Sep 2017 50 yards away

  Variation of Conditions 1 (approved plans), 2 (obscure glass), 3 (insertion of new windows) & 7 (hardstanding materials) to widen access road and hardstanding of planning permission 5/2015/3651 dated 08/08/2016 for Four semi-detached dwellings with associ

  Refused Windows or glazing 12 docs

• 43 Cowper Road Harpenden Hertfordshire Al5 5Nj

  TP/2026/0410 Submitted 25 Aug 2026 50 yards away

  98% historically approved · decision due ~21 Oct

  Rear left corner of the garden. Holly tree. Remove tree completely.

  Awaiting decision Trees 2 docs

• 67 Cowper Road Harpenden Hertfordshire Al5 5Nj

  5/2017/2928 Submitted 15 Oct 2017 50 yards away

  First floor side and rear with front and rear dormer windows and rooflights, single storey front infill extensions with partial garage conversion, enlargement of existing front dormer window, alterations to openings, flat roof to existing rear extension

  Granted Householder Extension Loft or dormer +1 11 docs
  Small domestic

• 96 Cowper Road Harpenden Hertfordshire Al5 5Nh

  5/2026/1538 Submitted 13 Aug 2026 50 yards away

  89% historically approved · decision due ~9 Oct

  Variation of Condition 3 (external materials) to change to render finish of planning permission 5/2025/2083 dated 06/01/2026 for First floor front and side extensions, single storey rear extension and roof alterations to the front elevation

  Awaiting decision Householder Extension Roofing 5 docs
  Small domestic

• 86 Cowper Road Harpenden Hertfordshire Al5 5Nh

  5/2016/1963 Submitted 26 Jun 2016 50 yards away

  Single storey rear extension incorporating new pitched roof with rooflights over existing rear extension, part first floor rear extension, alterations to openings and demolition of ground floor side flank wall and part first floor rear wall (resubmission

  Granted Householder Extension Loft or dormer +1 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