3 Hillside Road Harpenden Hertfordshire Al5 4Bs

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 5/2026/0472 Granted

  3 Hillside Road Harpenden Hertfordshire Al5 4Bs

  Removal of existing concrete plain tiles to the main roof and replacement with natural slate; erection of a box dormer extension to the rear roof slope with metal standing-seam cladding; and construction of a single-storey rear extension with monocouche r

  Decided 6 May 2026 Householder

1. 15 Oct 2025

   Received by St Albans

2. 16 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 19 Dec 2025

   Decision issued: DC3 Conditional Permission

4. 27 Sep 2026

   Added to PlanIndex

St Albans granted permission on 19 December 2025, 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.

• 43 Hillside Road Harpenden Hertfordshire Al5 4Bs

  5/2016/3084 Submitted 12 Oct 2016 50 yards away

  Single and two storey side and rear extension, alterations to openings including juliet balcony and loft conversion with rear dormer window

  Granted Householder Extension Loft or dormer +1 9 docs
  Domestic

• 1 Hillside Road Harpenden Hertfordshire Al5 4Bs

  5/2016/3785 Submitted 19 Dec 2016 50 yards away

  Single storey rear extension following demolition of existing and alterations to openings (resubmission following approval of 5/2016/2209 dated 09/09/2016)

  Granted Householder Extension Demolition 13 docs
  Small domestic

• 41 Hillside Road Harpenden Hertfordshire Al5 4Bs

  5/2017/2573 Submitted 10 Sep 2017 50 yards away

  Certificate of Lawfulness (proposed) - Loft conversion including hip to gable roof extension and rear dormer and three rooflights to front elevation

  Granted Lawful development Extension Loft or dormer 10 docs

• 11 Hillside Road Harpenden Hertfordshire Al5 4Bs

  5/2026/0525 Submitted 17 Mar 2026 50 yards away

  Garage conversion, with part roof extension and new front porch extension

  Granted Householder Extension 21 docs
  Small domestic

• 3 Hillside Road Harpenden Hertfordshire Al5 4Bs

  5/2026/0472 Submitted 11 Mar 2026 50 yards away

  Removal of existing concrete plain tiles to the main roof and replacement with natural slate; erection of a box dormer extension to the rear roof slope with metal standing-seam cladding; and construction of a single-storey rear extension with monocouche r

  Granted Householder Extension Loft or dormer 14 docs
  Small domestic

• 42 Bloomfield Road Harpenden Hertfordshire Al5 4Db

  5/2020/3132 Submitted 22 Dec 2020 50 yards away

  Single storey rear extension, first floor side extension, partial garage conversion and enlargement of existing dormer windows

  Granted Householder Extension Loft or dormer +1 18 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