19 Mentmore Road St Albans Hertfordshire Al1 2Bg

1. 22 Jun 2026

   Received by St Albans

2. 23 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Jul 2026

   Added to PlanIndex

4. 1 Aug 2026

   Status changed to Under Consideration

   Previously Under Consultation.

5. 17 Aug 2026

   Decision issued: Certificate of Lawfulness Approved

St Albans granted permission on 17 August 2026, 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.

• 29 Mentmore Road St Albans Hertfordshire Al1 2Bg

  5/2025/1544 Submitted 18 Aug 2025 50 yards away

  Certificate of Lawfulness (proposed) - Hip to gable loft conversion

  Granted Lawful development Loft or dormer 7 docs

• 25 Mentmore Road St Albans Hertfordshire Al1 2Bg

  5/2026/1245 Submitted 25 Jun 2026 50 yards 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

• 11 Boleyn Drive St Albans Hertfordshire Al1 2Bp

  5/2016/3503 Submitted 23 Nov 2016 100 yards away

  Prior Notification - Single storey rear extension 3.5m depth x 3.405m height x 2.250m in height to the eaves

  Granted Prior approval Extension 6 docs
  Small domestic

• 25 Sadleir Road St Albans Hertfordshire Al1 2Bl

  5/2016/3063 Submitted 10 Oct 2016 100 yards away

  Certificate of Lawfulness (proposed) - construction of a single storey rear extension

  Granted Lawful development Extension 8 docs
  Small domestic

• 34 Boleyn Drive St Albans Hertfordshire Al1 2Bs

  5/2021/1507 Submitted 19 May 2021 100 yards away

  Single storey and first floor rear extensions and internal alterations

  Granted Householder Extension 9 docs
  Small domestic

• 12 Boleyn Drive St Albans Hertfordshire Al1 2Bs

  5/2026/0046 Submitted 9 Jan 2026 100 yards away

  Loft conversion with rear dormer window and front rooflights

  Granted Householder Loft or dormer Windows or glazing 18 docs
  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