7 Knowle Drive Harpenden Hertfordshire Al5 1Rw

1. 22 Jun 2016

   Received by St Albans

2. 30 Jun 2016

   Validated

   Checked as complete and ready for consideration.

3. 20 Jul 2016

   Decision issued: Certificate of Lawfulness Approved

4. 15 Aug 2026

   Added to PlanIndex

St Albans granted permission on 20 July 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.

• 10 Knowle Drive Harpenden Hertfordshire Al5 1Rw

  5/2016/3097 Submitted 12 Oct 2016 50 yards away

  Single storey front, two storey side and first floor rear extensions, sunpipe to roof and alterations to openings

  Granted Householder Extension 10 docs
  Small domestic

• 26 Knowle Drive Harpenden Hertfordshire Al5 1Rw

  5/2017/2487 Submitted 31 Aug 2017 50 yards away

  Single storey rear extension with rooflights

  Granted Householder Extension Loft or dormer 12 docs
  Small domestic

• 17 Kingcroft Road Harpenden Hertfordshire Al5 1Eh

  5/2016/3457 Submitted 21 Nov 2016 50 yards away

  Two semi-detached, three bedroom dwellings with associated landscaping, parking and extended crossovers following demolition of existing

  Granted Demolition 18 docs

• 14 Broadstone Road Harpenden Hertfordshire Al5 1Rg

  5/2026/0967 Submitted 15 May 2026 100 yards away

  Certificate of Lawfulness (proposed) - Loft conversion with rear dormer and three rooflights to front

  Granted Lawful development Loft or dormer 14 docs

• 8 Broadstone Road Harpenden Hertfordshire Al5 1Rg

  5/2016/3502 Submitted 23 Nov 2016 100 yards away

  Certificate of Lawfulness (proposed) - Loft conversion with rear dormer window and three front rooflights

  Granted Lawful development Loft or dormer Windows or glazing 6 docs

• 31 Broadstone Road Harpenden Hertfordshire Al5 1Rb

  5/2026/0862 Submitted 1 May 2026 150 yards away

  Certificate of Lawfulness (Proposed) - Part of the existing garage to be converted with side windows and alterations to openings

  Granted Lawful development Windows or glazing 5 docs

• 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