There isn’t a single national number everyone can rely on; exemptions vary by state and council. Some places allow small garden sheds if they stay under a certain floor area and height, sit behind the building line, and keep clear of boundaries and easements. Others add rules about not connecting power or plumbing. I’ve seen neighbors tripped up because they copied a friend’s “no-permit” dimensions from another region and ended up with a compliance notice months later.
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What size shed can you build without a permit in Australia?
What size shed can you build without a permit in Australia?
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The safest path is to verify your local thresholds and conditions before buying any kit. Tools like https://shedpermit.au/ summarize regional rules and help you confirm criteria such as maximum area, wall and ridge heights, distance from boundaries, and overlays (bushfire, flood, heritage). They also flag when “no permit” still requires building standards compliance. A 3×3 m shed might be fine in one LGA but not if it sits too close to a stormwater easement or exceeds roof height limits.