How Much Does a Shed Cost in Australia?
A backyard shed is one of the most cost-effective ways to add storage or workshop space in Australia. Prices depend heavily on material, size and whether you need a new concrete slab — expect $350–$750/m² for the shed structure alone, plus $100–$140/m² if a new slab is required.
For a standard 18m² (6m × 3m) Colorbond shed with insulation and a new slab, budget roughly $11,700–$16,200 fully installed. A basic uninsulated shed of the same size on an existing slab can come in under $8,000.
Shed Materials Compared
Colorbond Steel — Uninsulated ($400–$500/m²)
The most common shed material in Australia — low maintenance, durable, and available in every standard roof colour to match your house. Good for general storage, but temperature swings inside can be significant in summer and winter without insulation.
Colorbond + Insulation ($550–$750/m²)
The same steel shell with insulated panels or blanket insulation added. Worth the extra cost if you're using the shed as a workshop, home gym, or anywhere you'll spend real time in — it meaningfully reduces heat gain in summer and condensation risk in winter.
Timber Frame ($350–$420/m²)
Cheaper than Colorbond in most cases, with a more traditional look. Needs more ongoing maintenance (painting/staining, termite protection) than steel, and is less common for larger spans.
Worked Example 1: Standard Colorbond Shed on Existing Base
An 18m² (6m × 3m) uninsulated Colorbond shed in Melbourne, built on an existing concrete pad:
- Shed structure (18m² × $450/m²): ~$8,100
- Slab: $0 (existing base)
- Total: approximately $8,100 → $450/m²
Worked Example 2: Insulated Workshop Shed with New Slab
A 24m² (6m × 4m) insulated Colorbond workshop shed in Brisbane with a new slab and electrical fit-out:
- Shed structure (24m² × $650/m²): ~$15,600
- Concrete slab (24m² × $120/m²): ~$2,880
- Electrical fit-out: ~$1,200
- Total: approximately $19,680 → $820/m²
Do I Need Council Approval for a Shed?
Most Australian councils require a building permit for sheds over a certain size — commonly 10–20m² depending on the council — or if the shed will be used for habitation or a home business. Height, boundary setbacks and bushfire zone requirements can also trigger the need for approval even on smaller structures. Always check with your local council before building, as requirements vary significantly by state and even by council within the same state.
Shed Price Comparison 2026
| Type | Price/m² | 18m² Shed | Best For |
|---|---|---|---|
| Timber Frame | $350–$420 | $6,300–$7,560 | Budget storage |
| Colorbond (uninsulated) | $400–$500 | $7,200–$9,000 | General storage, garage |
| Colorbond + Insulation | $550–$750 | $9,900–$13,500 | Workshop, home gym |
Prices include supply and install of the shed structure only. Concrete slab, electrical, and council permit fees are separate — see the calculator above for a fuller estimate.