63 Chesterton Avenue Harpenden Hertfordshire Al5 5Su

1. 31 May 2021

   Received by St Albans

2. 1 Jun 2021

   Validated

   Checked as complete and ready for consideration.

3. 26 Jul 2021

   Decision issued: Certificate of Lawfulness Approved

4. 17 Sep 2026

   Added to PlanIndex

St Albans granted permission on 26 July 2021, 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.

• 46 Chesterton Avenue Harpenden Hertfordshire Al5 5Su

  5/2026/1016 Submitted 22 May 2026 50 yards away

  89% historically approved · decision due ~18 Jul

  New porch and conservatory

  Awaiting decision Householder Extension 17 docs
  Small domestic

• 36 Chesterton Avenue Harpenden Hertfordshire Al5 5St

  5/2017/3059 Submitted 31 Oct 2017 100 yards away

  Two storey front extension, single storey rear, chimney stack enlargement upon the side elevation, partial garage conversion, insertion of window to side elevation, alterations to openings and installation of rooflights following demolition of existing co

  Granted Householder Extension Loft or dormer +2 16 docs
  Small domestic

• 7 Chesterton Avenue Harpenden Hertfordshire Al5 5St

  5/2021/1700 Submitted 7 Jun 2021 100 yards away

  Non-Material Amendment - Extend approved porch by 20cm and insert a non-opening window to side elevation of planning permission 5/20193247 dated 21/02/2020 for Two storey side extension, part single, part two storey rear extension with roof lights followi

  Granted Amendments Extension Loft or dormer +1 7 docs
  Small domestic

• 65 Crabtree Lane Harpenden Hertfordshire Al5 5Px

  5/2025/1896 Submitted 15 Oct 2025 100 yards away

  Conversion of Garage into a habitbale room and reaplace garage door with window

  Granted Householder Windows or glazing 24 docs
  Domestic

• 65 Crabtree Lane Harpenden Hertfordshire Al5 5Px

  5/2025/1895 Submitted 14 Oct 2025 100 yards away

  Single Storey rear extension

  Granted Householder Extension 23 docs
  Small domestic

• 77 Crabtree Lane Harpenden Hertfordshire Al5 5Px

  5/2016/2978 Submitted 2 Oct 2016 100 yards away

  The application is for a two storey side extension, single storey rear extension, front and rear dormer and alterations to the roof. (resubmission following refusal of 5/2016/2145)

  Granted Householder Extension Loft or dormer 9 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