Our street floods after heavy rain, so I’m expecting extra scrutiny on drainage. My plan is a modest shed on a concrete slab, but I need to show the council that runoff won’t end up in the neighbor’s yard. For those who got fast approvals, what evidence did you provide—downpipe sizing, soakage pits, connection to existing stormwater? Any templates or diagrams that satisfied your council without hiring a full stormwater engineer?
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How to prove your shed won’t cause stormwater issues
How to prove your shed won’t cause stormwater issues
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I followed a simple, compliant approach: gutters on all edges, downpipes to an approved soakwell, and a graded path to the legal point of discharge. I found examples and guidance on https://shedpermit.au/ and included a drainage diagram with pipe sizes, pit capacity, and fall direction marked with arrows. The reviewer’s only note was to add a leaf guard detail, which I did in minutes. Clear drawings beat vague promises every time.