Before ordering concrete for a shed, confirm what the shed itself requires. The footprint, structural details and intended use should shape the slab discussion.
Planning concrete shed slabs Perth property owners can rely on starts with the supplier’s current plans. A slab for storage should not be assumed to suit workshop machinery or vehicle use without checking the design.
This guide from Perth Concrete And Landscaping explains what to prepare before requesting a shed slab quote.
Start With the Shed’s Requirements
Provide the shed supplier’s plans and installation details. Confirm that the drawings match the model you intend to order.
Ask who is responsible for checking the slab design against the shed requirements. If design work is still needed, arrange it before booking concrete placement.
Describe the Intended Use
Tell the team about:
Storage racks and heavy items.
Vehicle or trailer access.
Workshop equipment.
Proposed power or plumbing.
Door positions and entry routes.
Any future change you already expect.
For commercial or larger workshop projects, provide the required design information rather than using a domestic garden shed as the reference.
Ground Conditions and Site Preparation
Show the contractor the proposed location and delivery route. Mention old foundations, buried rubble, drainage problems or previous filling that you know about.
Ask what assessment is needed and which preparation work is included. Do not assume a visually level area is ready for concrete.
Check how the slab will meet the surrounding ground and the shed entrance. If you want to move a trolley or vehicle into the shed, discuss that route as part of the layout.
Slab Design, Reinforcement and Fixings
The thickness, reinforcement, edges and fixing details should follow the project requirements. Ask the responsible designer and shed supplier to confirm them.
| Detail | What to confirm before placement |
| Dimensions | The exact footprint required by the shed supplier |
| Design | Approved slab and footing details where needed |
| Openings | Door positions and any rebates |
| Services | Required locations and coordination with trades |
| Fixings | Supplier and design requirements for anchoring |
| Handover | When erection and intended loads are permitted |
Avoid copying a thickness from another project. Keep the current plans available to everyone involved so changes are not passed on only by conversation.
Approvals and Coordination
Check the approval requirements with the local authority before work begins. Confirm who will obtain any required permit and provide the documents.
WA changed registration thresholds for certain Class 10a buildings from 1 July 2026. The government announcement states that the threshold rose to $50,000 for those buildings while permit requirements remained unchanged. The change should not be treated as a general permit exemption.
If you are managing the project yourself, clarify your responsibilities through the WA owner-builder resources. Confirm how those rules apply to your planned work.
Slab Quotes and Handover
Ask the quote to identify the plans used and the work included. Confirm preparation, formwork, reinforcement, placement, access costs and waste removal.
Keep shed erection separate from slab placement when comparing prices. Ask whether either contractor has included work normally done by the other.
Before the pour, agree on the sequence with the shed installer. After placement, obtain written instructions on when construction and loading can proceed. Record any inspections or documents needed for the permit process.
Request a Shed Slab Quote
Send Perth Concrete And Landscaping the supplier’s plans, site photos and details of the intended use. For concrete shed slabs Perth customers can plan around their chosen shed, request a quote or book a site visit.
Frequently Asked Questions
1. How thick should a shed slab be?
Use the project-specific design and supplier requirements. CCAA’s construction resources provide general background, rather than a design for your shed.
2. Does a shed need a building permit in WA?
Confirm your project’s requirements with the permit authority. The 2026 WA announcement states that its registration changes did not remove permit requirements.
3. Can a storage shed slab support machinery?
Have the proposed loads checked before construction. CCAA’s guides include design resources for industrial floors and pavements.
4. Who decides the fixing locations?
Coordinate them with the shed supplier and responsible designer. Check project obligations through WA building approvals resources.
5. When can the shed be erected on new concrete?
Get written approval for the construction loads and timing. Concrete Society curing guidance explains why fresh concrete needs care.
