In Melbourne, powder coating typically costs between $40 and $200 per square metre for standard steel and aluminium items, or roughly $15 to $60 per linear metre for fencing and balustrades. Small brackets and fittings often sit in a flat-rate range of $30 to $100 per item. The final price depends on surface prep, colour choice, and how the job is priced (per part, per metre, or per square metre).
If you’re getting quotes for fabricated steel or aluminium work, that range is the honest starting point. But the number on its own won’t tell you why one quote came in at $800 and another at $1,400 for what looks like the same job. That’s what we’ll unpack here, using real pricing logic from our own workshop floor in Melbourne.
What Powder Coating Actually Involves
Powder coating is a dry finishing process. A fine powder gets sprayed onto metal using an electrostatic charge, then baked in an oven until it melts into a smooth, hard-wearing coat. It’s different from wet paint, which relies on solvents to spread and dry.
That baking step is why powder coating holds up so well outdoors. The finish resists chipping, fading, and corrosion far better than standard paint, which is why you’ll see it on everything from front gates to structural steel beams across Melbourne homes and job sites.
Typical Powder Coating Costs by Job Type
Every fabricator prices differently, but here’s what we typically see across common jobs in Melbourne. These figures reflect standard steel or aluminium in reasonable starting condition.
Small brackets, fittings, and hardware
Usually priced as a flat rate per item, from around $30 to $100 each. Smaller batches cost more per piece because setup and hanging time don’t shrink with the part size.
Fencing and balustrades
Priced per linear metre, generally $15 to $60. Simple flat rail sections sit at the lower end. Ornate or heavily welded balustrade designs push toward the top of that range because of the extra masking and coverage they need.
Gates
A single driveway or garden gate typically runs from $150 to $500, depending on size and design complexity. Double gates or custom wrought-style designs cost more.
Structural steel components
Beams, columns, and larger fabricated frames are usually priced per square metre, from $40 to $150. Large flat surfaces coat efficiently, so bigger structural jobs often work out better value per square metre than small, fiddly parts.
Large custom fabrication projects
For bigger commercial or architectural jobs, most Melbourne coaters (us included) will quote the whole project rather than break it down piece by piece. This lets us account for batching, colour changes, and handling all at once, which usually works out cheaper for you than piecing it together separately.
Related Guide: Types of powder coating
What Actually Drives the Powder Coating Cost
The size of the item matters, but it’s rarely the only factor. Here’s what we look at when we quote a job.
Size and surface area
Pricing per square metre or linear metre exists for a practical reason. Bigger items take up more oven space and more hanging time, so the cost scales with the physical area being coated.
Metal condition and prep work
This is the factor that surprises people most. Rust, old paint, grease, and oxidation all need to be removed before powder coating can bond properly. If a part has been galvanised, it also needs a process called degassing, where the metal sits before coating to release trapped gases. Skip that step and the finish will bubble. Prep work like this can add real hours to a job that looks simple on paper. Correct surface preparation is also part of the safety and process standards set out in Safe Work Australia’s Code of Practice for Spray Painting and Powder Coating.
Colour and finish type
Standard colours from suppliers like Dulux, Interpon, Jotun, or Oxytech usually price at the lower end. Custom colour matching, metallic finishes, or textured coatings cost more because they need dedicated batching and sometimes a longer curing process.
Coating thickness and number of coats
Outdoor items exposed to weather often get a heavier or double coat for extra protection. That means more powder and more oven time, which shows up in the price.
Complexity and masking
Items with threads, tight welds, or multiple components that need selective masking take longer to prep and hang. A simple flat panel coats faster than a part full of brackets and bolt holes.
Batch size
Powder coating gets more cost-efficient as volume goes up. If you’re coating ten identical brackets instead of one, the price per piece usually drops because setup costs get spread across the batch.
Why Two Quotes for the Same Job Can Differ
This is the part of the process where budgets tend to go sideways. A quote that looks cheap on paper sometimes leaves out steps that a more thorough quote includes.
If one quote is noticeably lower than another for what seems like the same item, ask what’s included. Does it cover sandblasting or chemical prep? Does it include degassing for galvanised steel? Is a second coat included for outdoor durability, or is that an extra? A cheap quote that skips prep can mean a finish that fails within a year or two, which ends up costing more than the higher quote would have.
Melbourne-Specific Cost Considerations
Where your project sits in Melbourne can shift the price more than most people realise.
Properties in bayside or coastal parts of Melbourne deal with salt air, which speeds up corrosion. Items destined for these areas often need marine-grade prep or a thicker coat, which adds to the cost but saves you from premature rust down the line.
Heritage and architectural projects sometimes call for exact colour matching to meet council or design requirements, and custom colour batching carries a premium over standard stock shades. Turnaround time can shift pricing too, especially around busy building periods when workshops are booking out weeks ahead. Niche or imported colours also take longer to source, which can add to lead time and cost compared with stocked shades.
Powder Coating vs Other Finishes
| Finish | Typical cost | Durability | Best for |
| Powder coating | $40–$150/m² | High, resists chipping and fading | Outdoor steel, fencing, structural parts |
| Wet paint | $30–$100/m² | Moderate, more prone to chipping | Detailed or touch-up work |
| Hot-dip galvanising | $2–$5/kg (weight-based, not area-based) | Very high corrosion resistance | Structural steel, harsh environments |
Galvanising is priced by the weight of the item rather than surface area, so it isn’t directly comparable to the per-square-metre figures above. As a rough guide, a typical steel gate or small frame might cost $80–$250 to galvanise depending on its weight.
Powder coating sits in the middle on upfront cost but usually wins on lifespan for anything exposed to Melbourne’s weather. If a longer-term budget matters more than the sticker price, it’s worth weighing running costs, not just the quote total.
How to Get an Accurate Quote, Not Just an Estimate
A vague number over the phone is easy to give and hard to rely on. To get a quote that actually matches the final invoice, have this ready when you call:
- Dimensions or photos of the item
- The metal type (mild steel, aluminium, galvanised steel)
- Current condition (new fabrication, old paint, visible rust)
- Desired colour and finish
- Quantity, if it’s a batch job
Sending photos upfront saves everyone time and gets you a number you can actually trust.
A Job From Our Workshop
We recently coated a set of custom steel balustrades for a Melbourne renovation project, about 18 linear metres with a black matte finish. The steel was freshly fabricated, so prep was straightforward: no rust removal needed, just standard cleaning and pre-treatment. That job landed around $35 per linear metre. A similar job with old, weathered steel needing sandblasting first would have landed closer to $50 to $55 per metre, purely because of the extra prep hours.
Frequently Asked Questions
Is powder coating cheaper than spray painting?
Per square metre, powder coating and wet spray painting land in a similar range. Powder coating usually wins on value over time because it lasts longer and needs fewer touch-ups.
Does powder coating cost more for aluminium than steel?
Not usually by much. The bigger cost factor is the prep required, not the base metal type.
How long does a powder coating quote take?
For straightforward items with photos and dimensions provided, most Melbourne coaters can turn around a quote within a day or two.
Can I get an exact price without seeing the item?
For simple, standard items, yes. For anything with visible damage, unusual shapes, or an unclear substrate, an in-person look or clear photos are needed to price it accurately.
Get a Straight Answer, Not a Guess
Powder coating pricing depends on real details: size, condition, colour, and complexity. At Swift Metal Fabrication, we’ve spent 55 years combined in Melbourne workshops, so we know how to price a job properly the first time, without hidden extras showing up later.
If you’ve got a fabrication or coating project coming up, get in touch for a free, itemised quote. We fabricate and coat in-house, so you get one point of contact and one accurate number.