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 0m away

  New porch and conservatory

  Decided Householder Extension 10 docs
  Small domestic

• 36 Chesterton Avenue Harpenden Hertfordshire Al5 5St

  5/2017/3059 Submitted 31 Oct 2017 74m 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 74m 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

• 77 Crabtree Lane Harpenden Hertfordshire Al5 5Px

  5/2016/2978 Submitted 2 Oct 2016 100m 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

• 31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

  5/2026/1558 Submitted 20 Aug 2026 137m away

  Certificate of Lawfulness ( Proposed) - Proposed rear single-storey extension, side single-storey extension and removal of rear chimney stack

  Granted Lawful development Extension 8 docs
  Small domestic

• 11 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

  5/2016/2647 Submitted 23 Aug 2016 137m away

  Raising of and alterations to roof from hip to half hip roof form to create habitable loft accommodation with two rear dormer windows and rooflights and removal of one existing chimney

  Refused Householder Loft or dormer Windows or glazing 13 docs
  Domestic

• 5/2026/1277 Granted

  52 Napsbury Avenue London Colney Hertfordshire Al2 1Ls

  Certificate of Lawfulness (proposed) - The proposed development comprises building operations associated with the loft conversion of the existing roof space to provide additional habitable accommodation. The works include the construction of a rear dormer

  1 Jul 2026 Lawful development
• 5/2026/1366 Granted

  256 Sandridge Road St Albans Hertfordshire Al1 4Aj

  Certificate of Lawfulness (proposed) - Loft conversion with rear dormer & 4 velux to front

  14 Jul 2026 Lawful development
• 5/2026/1638 Decided

  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

  7 Sep 2026 Lawful development
• 5/2026/1621 Decided

  9 Ashley Gardens Harpenden Hertfordshire Al5 3En

  Certificate of Lawfulness (proposed) - Erection of a fence within boundary of the property

  2 Sep 2026 Lawful development
• 5/2026/1622 Decided

  9 Necton Road Wheathampstead Hertfordshire Al4 8At

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

  2 Sep 2026 Lawful development