51 Gilpin Green Harpenden Hertfordshire Al5 5Np

1. 25 Oct 2017

   Received by St Albans

2. 26 Oct 2017

   Validated

   Checked as complete and ready for consideration.

3. 1 Dec 2017

   Decision issued: Certificate of Lawfulness Approved

4. 17 Sep 2026

   Added to PlanIndex

St Albans granted permission on 1 December 2017, 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.

• 24 Gilpin Green Harpenden Hertfordshire Al5 5Nr

  5/2017/3099 Submitted 3 Nov 2017 92m away

  Two storey front extension

  Granted Householder Extension 16 docs
  Domestic

• 14 Gilpin Green Harpenden Hertfordshire Al5 5Nr

  5/2021/1459 Submitted 16 May 2021 92m away

  First floor side and rear extensions and alterations to existing dropped kerb

  Granted Householder Extension 9 docs
  Small domestic

• 16 Gilpin Green Harpenden Hertfordshire Al5 5Nr

  5/2021/1959 Submitted 4 Jul 2021 92m away

  Non Material Amendment - Reduction in size of rooflights, insertion of new window, alterations to balustrade, installation of air source heat pump and changes to glazed gable arrangement to planning permisssion 5/2020/2035 dated 22/12/2020 for Demolition

  Refused Amendments Loft or dormer Demolition +1 12 docs

• 14 Gilpin Green Harpenden Hertfordshire Al5 5Nr

  5/2017/2575 Submitted 10 Sep 2017 92m away

  Non Material Amendment - Removal of window from front elevation and centralisation of front door to planning permission 5/2017/1375 dated 30/06/2017 for Single storey front, side and rear extensions, rear patio, concrete paving for additional parking spac

  Granted Amendments Extension Windows or glazing 4 docs
  Small domestic

• 109 Overstone Road Harpenden Hertfordshire Al5 5Pl

  5/2026/0639 Submitted 27 Mar 2026 104m away

  Proposed two-storey rear extension along with internal and external alterations and chimney removal

  Granted Householder Extension 11 docs
  Domestic

• 4 Spenser Road Harpenden Hertfordshire Al5 5Nn

  5/2026/0666 Submitted 31 Mar 2026 136m away

  Certificate of Lawfulness (proposed) - The erection of an outbuilding located to the rear of the garden

  Refused Lawful development 7 docs

• 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