Special Building Overlay (SBO)
Clause 44.05 · Land Management Overlays
Identifies land prone to overland flooding from the urban drainage system, rather than riverine flooding.
When the SBO triggers a planning permit
A permit is commonly required under the SBO for the following. The schedule that applies to your land governs, and may exempt some of these or add others.
- •Constructing or carrying out works
- •Buildings and works must not increase flood risk to neighbouring properties
- •Referral to Melbourne Water typically required
What the SBO means for your project
An overlay sits on top of the zone. The zone determines what you can use the land for; the overlay adds a further layer of control over how you develop it, and can require a permit for works the zone alone would allow without one.
Because the numeric requirements sit in the schedule rather than the overlay itself, the practical answer for your site depends on which schedule applies. Check the schedule number shown on your Planning Property Report, then read that schedule in your council’s planning scheme.
Related overlays — Land Management Overlays
Frequently Asked Questions
How do I know if the Special Building Overlay applies to my property?
Search your address on VicPlan (mapshare.vic.gov.au/vicplan) or obtain a Planning Property Report. Both show every overlay affecting the land. An overlay may apply to only part of a property, so check the mapped extent rather than assuming it covers the whole site.
Does the SBO always require a planning permit?
No. Each overlay sets out its own permit triggers, and the schedule to the overlay can exempt particular works. The triggers listed on this page are the common ones — the schedule that applies in your council's planning scheme governs, and it is where any exemption or variation will be stated.
What is a schedule to the SBO?
Most overlays are applied through a numbered schedule (for example a schedule 1, 2 or 3) that sets the specific requirements for that area — the objectives, and often the numeric standards. Two properties with the same overlay code can face very different requirements if they sit under different schedules.
What happens if more than one overlay applies?
Each overlay is assessed independently and you must satisfy all of them. Overlays commonly overlap, and where they do the most restrictive requirement usually determines what is achievable.
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