18 Enderby Avenue St Helens WA11 9JN

1. 12 Sep 2025

   Received by St. Helens

2. 17 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 12 Nov 2025

   Decision issued: Grant

4. 24 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

• 42 Bramcote Avenue St Helens WA11 9JQ

  P/2022/0811/CLP Submitted 26 Nov 2022 77m away

  Certificate of lawfulness for a proposed single storey side extension.

  Granted Lawful development Extension 5 docs
  Small domestic

• 2 Syston Avenue St Helens WA11 9JJ

  A/2023/0018/NMA Submitted 2 Aug 2023 120m away

  Non-material amendment to P/2022/0403/HHFP to amend the proposed single storey side and rear extension to a single storey rear extension only.

  Granted Amendments Extension 3 docs
  Small domestic

• 6 Syston Avenue St Helens WA11 9JJ

  P/2026/0300/HHPA Submitted 8 Jun 2026 120m away

  94% historically approved · decision due ~3 Aug

  Prior approval for proposed apex single storey rear extension, projecting 3.26m from the rear, 3.74m max height, and 2.27m at the eaves.

  Decided Extension
  Small domestic

• 31 Syston Avenue St Helens Merseyside WA11 9JJ

  P/2025/0157/HHFP Submitted 6 Mar 2025 131m away

  Single storey rear extension for disabled use.

  Granted Householder Extension 9 docs
  Small domestic

• 56 Bramcote Avenue St Helens WA11 9JQ

  P/2023/0695/HHFP Submitted 12 Dec 2023 134m away

  Single storey side extension with front canopy.

  Granted Householder Extension 8 docs
  Small domestic

• 22 Coalville Road St Helens Merseyside WA11 9JR

  P/2016/0908/HHFP Submitted 14 Dec 2016 165m away

  Retrospective application for the retention of a rear conservatory and conversion/extension to existing garage.

  Granted Householder Extension 13 docs
  Small domestic

• P/2026/0441/CLP Awaiting decision

  108 New Street St Helens WA9 3XG

  Certificate of lawfulness for proposed change of use from C3 (dwellinghouse) to C4 (6-person HMO).

  1 Sep 2026 Lawful development
• P/2026/0444/CLP Awaiting decision

  19 Tracy Drive Newton Le Willows St Helens WA12 8PX

  Single storey side and rear extensions and garage conversion.

  29 Aug 2026 Lawful development
• P/2026/0439/CLP Awaiting decision

  87 Edge Street Thatto Heath St Helens WA9 5JX

  Certificate of lawfulness for a proposed change of use from dwellinghouse (C3) to childrens home (C2) for 1 child

  28 Aug 2026 Lawful development
• P/2026/0438/CLP Awaiting decision

  9 Chirton Close Haydock St Helens WA11 0FG

  Single storey rear extension and garage conversion.

  27 Aug 2026 Lawful development
• P/2026/0421/CLP Awaiting decision

  255 Marshalls Cross Road St Helens Merseyside WA9 3DE

  Certificate of lawfulness for proposed change of use from Dwellinghouse (Use Class C3) to a 6-person HMO (Use Class C4), including rear dormer and front rooflight.

  20 Aug 2026 Lawful development