1 Marlborough Park Southdown Road Harpenden Hertfordshire Al5 1Nl

1. 21 Sep 2017

   Received by St Albans

2. 16 Nov 2017

   Decision issued: COU Prior approval required and refused

3. 21 Aug 2026

   Added to PlanIndex

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 21 Churchfield Harpenden Hertfordshire Al5 1Lj

  5/2021/1442 Submitted 16 May 2021 142m away

  Hip to gable roof alterations to accommodate additional bedroom and office

  Decided Householder Loft or dormer Roofing 9 docs
  Domestic

• 128A Southdown Road Harpenden Hertfordshire Al5 1Pu

  5/2020/2968 Submitted 9 Dec 2020 158m away

  Loft conversion with rear rooflights (part retrospective)

  Decided Loft or dormer 11 docs

• 7 Walkers Close Harpenden Hertfordshire Al5 1Qj

  5/2026/0491 Submitted 12 Mar 2026 182m away

  Single storey side and rear extension with two roof lights, and flat roof rear dormer to existing main roof

  Decided Householder Extension Loft or dormer 15 docs
  Small domestic

• 11 Piggottshill Lane Harpenden Hertfordshire Al5 1Lg

  5/2025/0754 Submitted 11 Apr 2025 185m away

  Single storey rear extension

  Decided Householder Extension 9 docs
  Small domestic

• 5 St Johns Court St Johns Road Harpenden Hertfordshire Al5 1Dl

  TP/2026/0296 Submitted 10 Jun 2026 216m away

  T1 Multi Stem Cypress - Crown reduction by 2m approx vertical growth only. This will improve visibility to the public while driving and pedestrians on the path

  Granted Trees 6 docs

• 18 Piggottshill Lane Harpenden Hertfordshire Al5 1Lh

  5/2016/3083 Submitted 12 Oct 2016 221m away

  Demolition of existing dwelling and construction of two, three bedroom semi-detached dwellings with basements and associated access and parking

  Withdrawn Demolition 15 docs
  Domestic

• 5/2026/1588 Decided

  66 Pondfield Crescent St Albans Hertfordshire Al4 9Pf

  Prior Notification - Single storey rear extension 3m in height x 6m in depth with 2.7m height to eaves

  26 Aug 2026 Prior approval
• 5/2026/1579 Decided

  9 Cambridge Road St Albans Hertfordshire Al1 5Lh

  Prior Notification - Single storey rear extension 2.95m in height x 6m in depth with 2.95m height to eaves

  25 Aug 2026 Prior approval
• 5/2026/1346 Granted

  74 Wilshere Avenue St Albans Hertfordshire Al1 2Ph

  Prior Notification - Single storey rear extension 3.3m in height x 6m in depth with 2.7m height to eaves

  13 Jul 2026 Prior approval
• 5/2026/1345 Refused

  9 St Albans Road Sandridge Hertfordshire Al4 9La

  Prior Notification - Single storey rear extension 3.37m in height x 8m in depth with 1.58m height to eaves

  9 Jul 2026 Prior approval
• 5/2026/1302 Refused

  66 Pondfield Crescent St Albans Hertfordshire Al4 9Pf

  Prior Notification - Single storey rear extension 3m in height x 6m in depth with 2.7m height to eaves

  3 Jul 2026 Prior approval