1 Timbers Court Harpenden Hertfordshire Al5 2Qa

1. 2 Mar 2026

   Received by St Albans

2. 3 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 16 Jun 2026

   Decision issued: Certificate of Lawfulness Approved

4. 7 Sep 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 3 Timbers Court Harpenden Hertfordshire Al5 2Qa

  5/2026/0587 Submitted 24 Mar 2026 0m away

  Single storey front extension. Alterations to existing rear extension

  Decided Householder Extension 21 docs
  Small domestic

• 23A Douglas Road Harpenden Hertfordshire Al5 2Ep

  TP/2026/0380 Submitted 2 Aug 2026 53m away

  (Front garden) Tree 1 Fell to ground level dead Lime tree. (Rear garden) Tree 2 Reduce crown by 50% on Sycamore tree as it's causing excessive shading.

  Decided Trees 3 docs

• 4 Townsend Lane Harpenden Hertfordshire Al5 2Qe

  5/2026/1211 Submitted 23 Jun 2026 92m away

  Conversion of existing garage into a living room. New and replacement doors, windows & roof light to the existing house, with minor internal layout alterations.

  Decided Householder Loft or dormer Windows or glazing 13 docs
  Domestic

• 27 Townsend Lane Harpenden Hertfordshire Al5 2Qr

  TP/2026/0311 Submitted 24 Jun 2026 136m away

  T1 Laurel - Reduction down to previous pruning point (2m approx) and trim back from neighbours house to give 2m clearance approx. G2 Hornbeam group - Reduction down by 3-4m approx (primary cuts) and clear growth over road

  Decided Trees 4 docs

• The Lodge The Bourne Salisbury Avenue Harpenden Hertfordshire Al5 2Ps

  TP/2021/0298 Submitted 25 May 2021 144m away

  T1 Beech Tree rear boundary with Salisbury Avenue - crown reduce by 15% to allow more light into the front of the property. Crown thin and clean by 20% to maintain the health of the tree.

  Granted Trees 1 doc

• Cottage 3 The Bourne Salisbury Avenue Harpenden Hertfordshire Al5 2Ps

  TP/2026/0423 Submitted 27 Aug 2026 144m away

  Group of Hornbeam (x3) to reduce by approximately 1.5m height and width, making sure to cut back beyond neighbouring driveway and to clear the roadway. Cut back to clear bin store by 1m

  Decided Trees 4 docs

• 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