23 Coldharbour Lane Harpenden Hertfordshire Al5 4Nq

1. 17 May 2021

   Received by St Albans

2. 18 May 2021

   Validated

   Checked as complete and ready for consideration.

3. 15 Jul 2021

   Decision issued: Certificate of Lawfulness Approved

4. 10 Sep 2026

   Added to PlanIndex

St Albans granted permission on 15 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.

• 17 Coldharbour Lane Harpenden Hertfordshire Al5 4Nq

  5/2025/2071 Submitted 12 Nov 2025 50 yards away

  Demolition of detached bungalow including garage and construction of two semi-detached dwellings with associated car parking, landscaping and new vehicular access

  Granted Demolition 41 docs

• 59 Coldharbour Lane Harpenden Hertfordshire Al5 4Nf

  5/2021/1498 Submitted 17 May 2021 200 yards away

  Extension and conversion of garage to create two bedroom bungalow and associated parking

  Withdrawn Extension 8 docs

• 12 Willoughby Road Harpenden Hertfordshire Al5 4Pf

  5/2016/3091 Submitted 12 Oct 2016 200 yards away

  Certificate of Lawfulness (proposed) - Single storey rear and side extension (prior approval given 5/2016/2391 dated 29/09/2016), insertion of skylight and french doors to existing extension

  Refused Lawful development Extension Windows or glazing 9 docs
  Small domestic

• 34 St James Road Harpenden Hertfordshire Al5 4Pb

  5/2026/0248 Submitted 10 Feb 2026 200 yards away

  First floor rear roof extension to create bedroom

  Refused Householder Extension 14 docs
  Domestic

• 41 St James Road Harpenden Hertfordshire Al5 4Pb

  5/2023/2261 Submitted 8 Nov 2023 200 yards away

  Front canopy porch, single storey rear extension, and replacement roof to existing single storey side extension with side and rear rooflights

  Granted Householder Extension Loft or dormer +1 12 docs
  Small domestic

• 20A St James Road Harpenden Hertfordshire Al5 4Pb

  5/2026/0275 Submitted 16 Feb 2026 200 yards away

  Single storey rear extension

  Granted Householder Extension 13 docs
  Small domestic

• 5/2026/1638 Granted

  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

  Received 7 Sep, published by the council 13 Sep 2026 Lawful development
• 5/2026/1622 Granted

  9 Necton Road Wheathampstead Hertfordshire Al4 8At

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

  Received 2 Sep, published by the council 13 Sep 2026 Lawful development
• 5/2026/1561 Granted

  125 New House Park St Albans Hertfordshire Al1 1Uh

  Certificate of Lawfulness (existing) - The retrospective development comprises minor external alterations to the rear elevation of the dwellinghouse at 125 New House Park. The applicant seeks a Certificate of Lawfulness (Existing) under Section 191 of the

  Received 21 Aug, published by the council 31 Aug 2026 Lawful development
• 5/2026/1772 Awaiting decision

  14 Ashley Road St Albans Hertfordshire Al1 5Da

  Certificate of Lawfulness (Proposed) - Loft Conversion, Hip to gable, Rear dormer

  Received 29 Sep, published by the council 11 Oct 2026 Lawful development
• 5/2026/1759 Awaiting decision

  2 Grimston Road St Albans Hertfordshire Al1 5Ep

  Certificate of Lawfulness (Proposed) - Erection of a single-storey detached timber log cabin with a pent (mono-pitch) roof in the rear garden, for purposes incidental to the enjoyment of the dwellinghouse (domestic storage and hobby workshop). Footprint 9

  Received 28 Sep, published by the council 11 Oct 2026 Lawful development