9 Salisbury Road Harpenden Hertfordshire Al5 5Ar

1. 19 Feb 2026

   Received by St Albans

2. 20 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 14 May 2026

   Decision issued: Certificate of Lawfulness Refused

4. 31 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.

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

• 7 Salisbury Road Harpenden Hertfordshire Al5 5Ar

  5/2017/2576 Submitted 12 Sep 2017 0m away

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

  Refused Prior approval Extension 8 docs
  Small domestic

• 9 Salisbury Road Harpenden Hertfordshire Al5 5Ar

  5/2026/0987 Submitted 19 May 2026 0m away

  Certificate of Lawfulness (proposed) - Loft conversion

  Granted Lawful development Loft or dormer 8 docs

• The Malta Ph 110 Lower Luton Road Harpenden Hertfordshire Al5 5Ah

  5/2026/0948 Submitted 14 May 2026 101m away

  First floor rear extension and associated alterations, including new openings and terraces, to create three self-contained flats

  Decided New dwelling Extension 17 docs

• The Malta Ph 110 Lower Luton Road Harpenden Hertfordshire Al5 5Ah

  5/2016/3851 Submitted 23 Dec 2016 101m away

  Non Material Amendment - Alterations to front canopy, openings and rendering materials to planning permission 5/2015/3391 dated 14/01/2016 for the Change of use of land to Class C3 (dwellings) and erection of two, three bedroom detached dwellings with as

  Refused Amendments 15 docs

• 91 Lower Luton Road Harpenden Hertfordshire Al5 5Aj

  5/2017/2524 Submitted 4 Sep 2017 116m away

  Discharge of Condition 3 (samples of materials) of planning permission 5/2017/0474 dated 06/06/2017 for Demolition of existing and replacement with new modular building with associated landscaping

  Granted Conditions Demolition 3 docs

• 23 Roundfield Avenue Harpenden Hertfordshire Al5 5Bd

  5/2026/1202 Submitted 23 Jun 2026 136m away

  Erection of single storey extension to the side and rear of existing dwelling

  Decided Householder Extension 17 docs
  Small domestic

• 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