25 Sadleir Road St Albans Hertfordshire Al1 2Bl

1. 10 Oct 2016

   Received by St Albans

2. 11 Oct 2016

   Validated

   Checked as complete and ready for consideration.

3. 4 Nov 2016

   Decision issued: Certificate of Lawfulness Approved

4. 9 Aug 2026

   Added to PlanIndex

St Albans granted permission on 4 November 2016, 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.

• 19 Mentmore Road St Albans Hertfordshire Al1 2Bg

  5/2026/1200 Submitted 22 Jun 2026 82m away

  Certificate of Lawfulness (proposed) - Removal of the existing side access door and alterations to the fenestration of the existing single storey rear extension, including the replacement of existing rear ground floor windows with a new enlarged kitchen w

  Granted Lawful development Extension Windows or glazing 17 docs
  Small domestic

• 25 Mentmore Road St Albans Hertfordshire Al1 2Bg

  5/2026/1245 Submitted 25 Jun 2026 82m away

  Single storey rear extension 4m x in depth x 3.70m in height x 2.70m in height to the eaves

  Refused Prior approval Extension 5 docs
  Small domestic

• 12 Boleyn Drive St Albans Hertfordshire Al1 2Bs

  5/2026/0046 Submitted 9 Jan 2026 120m away

  Loft conversion with rear dormer window and front rooflights

  Decided Householder Loft or dormer Windows or glazing 16 docs
  Domestic

• 11 Monks Close St Albans Hertfordshire Al1 2Ew

  5/2026/1054 Submitted 1 Jun 2026 152m away

  Demolition of existing outbuilding to make way for new single storey rear extension, with new front porch and loft conversion with rear facing dormer and front facing solar PV panels

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

• 9 Monks Close St Albans Hertfordshire Al1 2Ew

  5/2026/0994 Submitted 19 May 2026 152m away

  Prior Notification - Single storey rear extension 3.3m in height x 3.5m in depth with 3m height to eaves

  Granted Prior approval Extension 6 docs
  Small domestic

• 18 Leyland Avenue St Albans Hertfordshire Al1 2Be

  5/2026/0303 Submitted 17 Feb 2026 255m away

  Erection of two bedroom dwelling, along with the provision of vehicle parking, refuse/recycling and cycle stores, boundary treatments, and associated landscaping, installation of heat pump and solar panels and new vehicle crossover

  Decided 30 docs
  Domestic

• 5/2026/1607 Decided

  5 Flavian Close St Albans Hertfordshire Al3 4Jx

  Certificate of Lawfulness (proposed) - Construction of single storey rear extension with tiled lean to roof fitted with 3no. roof lights

  1 Sep 2026 Lawful development
• 5/2026/0951 Refused

  23 Clarence Road St Albans Hertfordshire Al1 4Np

  Certificate of Lawfulness (proposed) - New single storey garden room and close boarded access gates

  15 May 2026 Lawful development
• 5/2026/1558 Granted

  31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

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

  20 Aug 2026 Lawful development
• 5/2026/0291 Refused

  66 Pondfield Crescent St Albans Hertfordshire Al4 9Pf

  Certificate of Lawfulness (proposed) - Hip to gable and new dormer

  16 Feb 2026 Lawful development
• 5/2026/1252 Refused

  7 Palfrey Close St Albans Hertfordshire Al3 5Re

  Certificate of Lawfulness (proposed) - Single storey/ground floor extension to dining room, to extend as far as kitchen rear/outside wall across to party wall. Repositioning French windows to new rear of room, and repositioning downpipe and soak away in r

  30 Jun 2026 Lawful development