3 How Field Harpenden Hertfordshire Al5 3Au

This site has had 3 applications since 2026: 2 approved, 1 refused.

• 5/2026/1296 Granted

  3 How Field Harpenden Hertfordshire Al5 3Au

  Two storey front extension, garage conversion and alterations to openings

  Decided 13 Aug 2026 Householder
• 5/2026/0458 Refused

  3 How Field Harpenden Hertfordshire Al5 3Au

  Two storey front extensions

  Decided 23 Jun 2026 Householder

1. 2 Feb 2026

   Received by St Albans

2. 4 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 22 Apr 2026

   Decision issued: Certificate of Lawfulness Approved

4. 31 Aug 2026

   Added to PlanIndex

St Albans granted permission on 22 April 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 3 How Field Harpenden Hertfordshire Al5 3Au

  5/2026/0458 Submitted 25 Feb 2026 50 yards away

  Two storey front extensions

  Refused Householder Extension 10 docs
  Domestic

• 3 How Field Harpenden Hertfordshire Al5 3Au

  5/2026/1296 Submitted 6 Jul 2026 50 yards away

  Two storey front extension, garage conversion and alterations to openings

  Granted Householder Extension 13 docs
  Small domestic

• 47 Roundwood Park Harpenden Hertfordshire Al5 3Ag

  5/2017/1787 Submitted 21 Jun 2017 150 yards away

  Discharge of Condition 3 (samples of materials) of planning permission 5/2016/3293 dated 30/01/2017 for the Addition of first floor with habitable accommodation in the roof, raising of roof from flat to pitched of existing single storey rear extension, n

  Granted Conditions Extension 3 docs
  Small domestic

• Land Rear Of 31 Roundwood Park Harpenden Hertfordshire

  5/2017/3259 Submitted 17 Nov 2017 150 yards away

  Variation of Condition 2 (approved plans) to change the approved timber cladding to quartz zinc cladding and the addition of a porch canopy to the front of the property to planning permission 5/2016/3245, allowed on appeal dated 08/08/2017, for Two bedroo

  Granted Extension 19 docs
  Small domestic

• Land Rear Of 31 Roundwood Park Harpenden Hertfordshire

  5/2017/3225 Submitted 14 Nov 2017 150 yards away

  Discharge of Condition 6 (access) of planning permission 5/2016/3245 allowed on appeal dated 08/08/2017 for Two bedroom detached house, closeboarded boundary fence, rendered wall and fencing and new crossover for parking

  Granted Conditions New dwelling 8 docs
  Small domestic

• Land Rear Of 31 Roundwood Park Harpenden Hertfordshire

  5/2017/3226 Submitted 14 Nov 2017 150 yards away

  Discharge of Conditions 4 (sample of materials), 8 (landscaping), 9 (tree planting) and 10 (soft landscape) of planning permission 5/2016/3245, allowed on appeal dated 08/08/2017, for Two bedroom detached house, closeboarded boundary fence, rendered wall

  Granted Conditions New dwelling 5 docs
  Small domestic

• 5/2026/1638 Granted

  1 Castle Rise Wheathampstead Hertfordshire Al4 8Hx

  Certificate of Lawfulness (proposed) - Proposed loft hip to gable with rear dormer, internal alterations and all associated works at 1 Castle Rise, AL4 8HX

  Received 7 Sep, published by the council 13 Sep 2026 Lawful development
• 5/2026/1622 Granted

  9 Necton Road Wheathampstead Hertfordshire Al4 8At

  Certificate of Lawfulness (proposed) - Dormer to rear elevation to existing bedroom. new window to rear

  Received 2 Sep, published by the council 13 Sep 2026 Lawful development
• 5/2026/1561 Granted

  125 New House Park St Albans Hertfordshire Al1 1Uh

  Certificate of Lawfulness (existing) - The retrospective development comprises minor external alterations to the rear elevation of the dwellinghouse at 125 New House Park. The applicant seeks a Certificate of Lawfulness (Existing) under Section 191 of the

  Received 21 Aug, published by the council 31 Aug 2026 Lawful development
• 5/2026/1772 Awaiting decision

  14 Ashley Road St Albans Hertfordshire Al1 5Da

  Certificate of Lawfulness (Proposed) - Loft Conversion, Hip to gable, Rear dormer

  Received 29 Sep, published by the council 11 Oct 2026 Lawful development
• 5/2026/1759 Awaiting decision

  2 Grimston Road St Albans Hertfordshire Al1 5Ep

  Certificate of Lawfulness (Proposed) - Erection of a single-storey detached timber log cabin with a pent (mono-pitch) roof in the rear garden, for purposes incidental to the enjoyment of the dwellinghouse (domestic storage and hobby workshop). Footprint 9

  Received 28 Sep, published by the council 11 Oct 2026 Lawful development