Quick Answer

A garden shed in Melbourne costs $800–$8,000+ supplied and installed depending on size and materials. A basic 1.5m×2m Colorbond kit shed runs $800–$1,500. A custom timber shed (3m×4m) costs $3,000–$6,000. Installation on a concrete slab adds $500–$2,500 depending on size. No council permit needed for sheds under 10m² in most Melbourne suburbs.

A completed 3m×2.25m Colorbond garden shed on a freshly poured concrete slab — Colorbond is by far the most popular shed material in SE Melbourne beca
A completed 3m×2.25m Colorbond garden shed on a freshly poured concrete slab — Colorbond is by far the most popular shed material in SE Melbourne because it handles the region’s hot summers and wet winters without warping or rotting.

Garden Shed Costs in Melbourne

Storage is a constant challenge in Melbourne’s south-eastern suburbs, where houses in Berwick, Cranbourne and Officer often have large blocks but minimal garage space. A well-chosen shed solves tool storage, bike storage, and outdoor living overflow. Prices range from flat-pack Colorbond kits you self-assemble to custom timber structures built by a carpenter.

Kit Shed Costs (Colorbond/Steel)

Size Kit Shed (supply only) Installed (supply + slab + assemble)
Small 1.52m×0.76m (bike/tool store) $350–$600 $900–$1,400
Standard 1.83m×1.83m $500–$900 $1,200–$2,000
Medium 2.25m×3.0m $800–$1,500 $1,800–$3,000
Large 3.0m×4.5m $1,400–$2,500 $3,000–$5,000
Extra large 3.0m×6.0m (workshop) $2,200–$3,500 $4,500–$7,000

Custom Timber Shed Costs

Type Size Cost (Installed)
Treated pine frame + hardiplank cladding 3m×3m $3,500–$5,500
Hardwood or merbau timber shed 3m×4m $5,000–$8,000
Weatherboard garden shed (heritage style) 2.4m×3.6m $4,000–$7,000
Pro tip: Colorbond sheds from Absco or Duratuf cost 40–60% less than timber and last just as long in Melbourne’s climate. The colour range now includes Colorbond Monument, Surfmist and Shale Grey — matching popular home exteriors without looking like a typical garden shed.

Concrete Slab Costs for Sheds

Slab Size Cost Notes
Small (1.8m×1.8m, 75mm) $400–$700 DIY-possible for small handypersons
Medium (3m×3m, 100mm) $700–$1,500 Needs concrete truck for larger pours
Large (4.5m×6m, 100mm) $1,500–$2,800 Concreter required; footings may be needed
Timber bearers + bearer frame (no slab) $200–$600 OK for small sheds, check ground drainage
Screeding a concrete slab for a garden shed — getting the slab level is critical because Colorbond kit sheds rely on a flat base for the door alignmen
Screeding a concrete slab for a garden shed — getting the slab level is critical because Colorbond kit sheds rely on a flat base for the door alignment, and an unlevel slab of even 10mm will cause doors to bind and wall panels to rack.

What Affects Garden Shed Costs?

1. Ground Conditions in SE Melbourne

Melbourne’s south-eastern suburbs sit on reactive clay soil that expands in winter and shrinks in summer. This movement can crack poorly laid slabs and distort shed frames. Sheds in Narre Warren, Berwick and Pakenham should be placed on concrete slabs with adequate thickness (100mm+) rather than timber bearers where possible.

2. Council Permit Requirements

In most Melbourne councils, sheds under 10m² (e.g. a 2m×4m = 8m² shed) don’t need a building permit. Sheds over 10m² need a permit from your local council (City of Casey, Frankston City, Cardinia, Mornington Peninsula Shire). Permits cost $300–$800 and add 4–8 weeks. Some sheds also need to meet setback requirements — typically 1m from fences.

3. Electrical Connection

Adding power to a shed (lights and GPOs) costs $800–$2,500 depending on distance from your switchboard. This requires a licensed electrician. Underground conduit runs from the house to the shed are the neatest option — expect $60–$100 per metre for trenching and conduit.

DIY Assembly vs Hiring a Builder

Colorbond kit sheds are designed for DIY assembly by a competent handyperson — two people can assemble a 3m×3m shed in 4–8 hours. The instructions from brands like Absco are well-documented. However, pouring and levelling a concrete slab is harder than it looks — misaligned slabs cause door and panel problems. If in doubt, hire a concreter for the slab and self-assemble the shed.

Safety warning: Never anchor a shed to a timber bearer base without storm tie-downs in Melbourne’s southern suburbs. Coastal areas from Frankston to Mornington receive strong south-westerly winds — an unsecured shed can become a projectile in a storm. Slab-mounted sheds with proper anchors are significantly safer.
Checking storm tie-down anchors on a Colorbond shed — in Melbourne's coastal and southern suburbs, strong south-westerly winds can move or overturn un
Checking storm tie-down anchors on a Colorbond shed — in Melbourne’s coastal and southern suburbs, strong south-westerly winds can move or overturn unsecured sheds, so base plate bolts into the concrete slab are not optional.

Signs You Need a New or Better Shed

Problem Symptom Action
Rusting shed panels Orange rust streaks on walls or roof Colorbond sheds rarely rust — may be cheaper steel. Replace.
Door won’t close Door binds, won’t latch Slab has settled — re-level base plate or replace slab
Leaking roof Water inside after rain Check ridge cap seals and roofing screws — reseal or replace
Timber rot Soft, discoloured timber frames Replace affected framing — use treated H4 pine for ground contact
Too small Can’t fit equipment anymore Upgrade to larger kit or add lean-to extension

Top 10 Tips and Gotchas

  1. Check your council permit threshold first: Casey, Cardinia and Frankston councils all have slightly different shed size rules. Always check before ordering.
  2. Order a Colorbond colour to match your home: Absco, Duratuf, and Spanbilt all offer the full Colorbond range. Matching your fence or roof colour looks far better than a standard grey shed.
  3. Pour the slab 3–7 days before assembly: Concrete reaches working strength at 3 days but full cure takes 28 days. Don’t anchor the shed frame on wet concrete.
  4. Account for guttering: Most Colorbond sheds don’t come with gutters. Add guttering to direct rain away from the slab edge — uncontrolled runoff erodes the slab base over time.
  5. Add a window for ventilation: A sealed shed in Melbourne’s 40°C summers becomes a furnace. Absco and Duratuf sell optional perspex windows — add at least one.
  6. Plan the door swing before positioning: Double barn doors need clearance to open. In tight spaces, sliding doors or roller doors save space.
  7. Use a spirit level constantly during assembly: Wall panels must be plumb before the roof goes on — checking later means disassembling sections.
  8. Secure to slab with Dynabolts, not timber screws: Base plates must be chemically or mechanically anchored to the slab — self-tapping screws into concrete are not adequate for storm loads.
  9. Insulate if using as a workshop: Bulk insulation batts (R1.5) in a shed wall reduce summer temperature by 10–15°C. Far more comfortable as a workshop.
  10. Don’t put the shed in the rear setback without checking: Most Melbourne councils require 900mm setback from rear and side fences. A shed placed against a fence will need to be moved.
Fitting an optional perspex window into a Colorbond kit shed during assembly — ventilation is essential in SE Melbourne where shed interiors can reach
Fitting an optional perspex window into a Colorbond kit shed during assembly — ventilation is essential in SE Melbourne where shed interiors can reach 55–60°C on summer days, which will damage stored tools, paint, and electronic equipment.

Local Melbourne Resources

Frequently Asked Questions

Do I need a permit for a garden shed in Melbourne?

Sheds under 10m² floor area generally don’t need a building permit in most Melbourne councils. For example, a 2m×4m shed (8m²) is usually permit-free. Sheds over 10m² require a permit from your local council — allow $300–$800 in fees and 4–8 weeks for approval. Always check your specific council’s requirements first.

Can I build a shed directly on grass without a concrete slab?

Small sheds can be placed on timber bearers over compacted gravel in Melbourne, but reactive clay soil in SE suburbs (Narre Warren, Berwick, Pakenham) expands and contracts seasonally, causing unlevel and distorted shed frames over time. A concrete slab is strongly recommended for any shed larger than 2m×2m in these areas.

How close can a shed be to the fence in Melbourne?

Most Melbourne councils (Casey, Cardinia, Frankston) require sheds to be at least 900mm (0.9m) from side and rear boundaries without a permit. Sheds right on the boundary require a variation permit. Check your specific council’s planning requirements, as heritage areas can have stricter setbacks.

Which is better — Colorbond or timber shed?

Colorbond wins on cost, durability, and low maintenance in Melbourne’s climate. Timber looks better in heritage and garden settings but costs 2–3 times more and requires periodic painting or oiling to prevent rot. For a practical storage shed, Colorbond is the right choice for most SE Melbourne homeowners.

Can I run power to my garden shed in Melbourne?

Yes, but it must be done by a licensed electrician. Running underground conduit from your switchboard to the shed typically costs $800–$2,500 depending on distance. The electrician will install a sub-board in the shed, then wire lights and GPOs. You’ll also need a Certificate of Electrical Safety for the work.

Final Thoughts

For most Melbourne homeowners, a quality Colorbond kit shed (3m×3m) on a concrete slab is the best value option — costing $2,000–$3,500 all-in and lasting 20+ years with minimal maintenance. If appearance matters (heritage suburbs, visible from street), invest in timber. Either way, sort the slab properly — a poorly laid slab is the most common reason shed doors and walls cause problems over time.

Related guides