Journey Step 2 of 3

2. Apply to your local SAB

Step 2 of 3

Apply to the SAB at your local authority before starting construction. The SAB assesses your drainage design against Welsh national standards. You must receive SAB approval before work begins — this is a separate process from planning permission.

Mandatory SuDS approval in Wales

Full guide to the SAB application process, fees, statutory timelines, design standards, and what to include in your submission.

Read the guide →