6 Grasmere Road St Albans Hertfordshire Al1 5Py

1. 7 Jun 2021

   Received by St Albans

2. 13 Jun 2021

   Validated

   Checked as complete and ready for consideration.

3. 29 Jul 2021

   Decision issued: Certificate of Lawfulness Approved

4. 17 Sep 2026

   Added to PlanIndex

St Albans granted permission on 29 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.

• 128 Thirlmere Drive St Albans Hertfordshire Al1 5Ql

  5/2026/0700 Submitted 7 Apr 2026 109m away

  Certificate of Lawfulness (proposed) - Loft dormer extension to the existing semi detached house

  Granted Lawful development New dwelling Extension +1 17 docs

• 20 Catham Close St Albans Hertfordshire Al1 5Qt

  5/2021/1145 Submitted 12 Apr 2021 170m away

  Single storey front extension with rooflights, loft conversion to habitable space with rear dormer window and rooflights to front elevation and alterations to openings

  Granted Householder Extension Loft or dormer +1 11 docs
  Small domestic

• 117 Cell Barnes Lane St Albans Hertfordshire Al1 5Pu

  5/2021/1554 Submitted 23 May 2021 182m away

  Prior Notification - Single storey rear extension 2.9m in height x 5.5m in depth and 2.9m in height to the eaves

  Granted Prior approval Extension 10 docs
  Small domestic

• 56 Windermere Avenue St Albans Hertfordshire Al1 5Qn

  5/2021/1472 Submitted 17 May 2021 189m away

  First floor rear extension - retrospective (resubmission following refusal of 5/2020/1327)

  Granted Householder Extension 10 docs
  Domestic

• 58 Windermere Avenue St Albans Hertfordshire Al1 5Qn

  5/2026/1056 Submitted 1 Jun 2026 189m away

  First floor rear extension

  Decided Householder Extension 11 docs
  Domestic

• 58 Windermere Avenue St Albans Hertfordshire Al1 5Qn

  5/2016/1955 Submitted 23 Jun 2016 189m away

  Prior Notification - Single storey rear extension 4.2m depth x 3.64m height x 2.5m in height to the eaves

  Granted Prior approval Extension 26 docs
  Small 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