100 Crabtree Lane Harpenden Hertfordshire Al5 5Rf

1. 13 Apr 2026

   Received by St Albans

2. 14 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 11 Aug 2026

   Decision issued: DC3 Conditional Permission

St Albans granted permission on 11 August 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.

• 22 Weybourne Close Harpenden Hertfordshire Al5 5Re

  5/2025/1862 Submitted 10 Oct 2025 50 yards away

  Single storey front and rear extensions, loft conversion with dormer window to rear and rooflights to front, and construction of a garden outbuilding following demolition of shed - ADDITIONAL INFORMATION

  Granted Householder Extension Loft or dormer +2 17 docs
  Small domestic

• 153 Crabtree Lane Harpenden Hertfordshire Al5 5Rd

  5/2017/2504 Submitted 3 Sep 2017 50 yards away

  Certificate of Lawfulness (proposed) - Loft conversion with rear dormer window

  Granted Lawful development Loft or dormer Windows or glazing 7 docs

• 33 Holly Walk Harpenden Hertfordshire Al5 5Rg

  5/2017/2734 Submitted 27 Sep 2017 100 yards away

  Certificate of Lawfulness (proposed) - Hip to gable and rear dormer loft conversion with front roof lights and rear dormer windows

  Granted Lawful development Loft or dormer Windows or glazing 7 docs

• 34 Holly Walk Harpenden Hertfordshire Al5 5Rg

  5/2017/3563 Submitted 15 Dec 2017 100 yards away

  Double garage following demolition of existing garage

  Granted Householder Demolition 11 docs
  Domestic

• 6 Glemsford Drive Harpenden Hertfordshire Al5 5Rb

  5/2016/3783 Submitted 19 Dec 2016 100 yards away

  Certificate of Lawfulness (proposed) - Loft conversion with rear dormer window, insertion of two rooflights to front roof slope and single storey rear extension

  Granted Lawful development Extension Loft or dormer +1 5 docs
  Small domestic

• 52 Granby Avenue Harpenden Hertfordshire Al5 5Qr

  5/2016/3390 Submitted 14 Nov 2016 150 yards away

  Two storey side extension, new porch and alterations to openings

  Granted Householder Extension 9 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