If you've been Googling epoxy garage floor costs and getting wildly different numbers — anywhere from $800 to $8,000 — you're not imagining things. The price range is genuinely that wide, and the reason comes down to a handful of factors that most quote comparisons don't explain clearly.
This guide breaks it down honestly. What a single garage costs, what a double garage costs, what moves the price up or down, and what questions to ask before you sign anything.
Single vs Double Garage: What to Expect
These are the two questions we get most often, so let's answer them directly.
A single garage (typically 18–25m²) runs between $1,980 and $2,250 fully installed by a professional. That covers preparation, primer, and your finished epoxy top coat. The per-square-metre cost is higher than a larger space because the fixed work involved in preparation — grinding, priming, detailing edges — doesn't shrink proportionally with the area.
A standard double garage (typically 36–50m²) sits in the $3,240–$4,500 range for a quality professional installation. Larger again — an oversized double or a garage workshop combination running 55–70m² — will push toward $4,000–$6,500 depending on the finish system chosen and the condition of the slab.
At a per-square-metre level, professional epoxy garage flooring in Australia generally sits between $70 and $90/m² for residential applications. Where you land in that range depends on what we cover below.
What Actually Moves the Price Up or Down
The slab condition is the single biggest variable. A clean, sound concrete slab with no oil contamination and no previous coating is the best-case scenario — preparation is straightforward and the job runs efficiently.
Here's what adds cost:
Oil staining is extremely common in garages, and it has to be treated properly before epoxy goes down — not just ground over. Oil that has penetrated the concrete can prevent proper bonding, and a contractor who doesn't address it is setting you up for a floor that peels within 12 months. Chemical treatment and additional grinding adds time and cost, but it's non-negotiable.
Existing coatings or paint need to come off completely. If your garage floor has been previously painted or sealed, that material is chemically incompatible with epoxy and must be mechanically removed. This adds preparation time and therefore cost.
Crack repair and patching is a separate line item. Minor surface cracks can be filled as part of standard prep. Significant cracking — especially where the slab has shifted — needs proper repair before any coating goes down.
Finish system complexity also plays a role. A solid-colour single-coat epoxy is the most affordable option. A decorative flake system — which adds visual texture and is extremely popular in garage applications — adds one to two additional steps. A quartz or metallic finish is the premium end and priced accordingly.
Garage Versus Workshop Versus Showroom: Different Requirements
Not all garage floors are the same application. A standard residential garage — cars, a workbench, occasional foot traffic — has different demands from a home workshop running heavy machinery, or a commercial showroom where appearance is part of the business.
For a residential garage, a two-coat epoxy system with a solid colour or decorative flake finish is the standard choice. Anti-slip aggregate is worth adding if you live somewhere with wet conditions — it costs very little extra and makes a real difference underfoot.
For a workshop or shed, chemical resistance and abrasion resistance become more important. A thicker system, or one with a harder-wearing top coat, holds up better against constant tool drops, fluid spills, and heavy equipment.
For commercial showrooms or retail spaces, the aesthetic demands go up — decorative systems, polished finishes, and colour consistency matter as much as durability.
DIY vs Professional: The Honest Comparison
DIY epoxy kits are available at hardware stores for $200–$600 for a single garage. They're tempting. The reality is that most DIY epoxy jobs fail within two to three years — and the most common reason is inadequate surface preparation. Without diamond grinding equipment, you simply cannot open the concrete pores properly. Without moisture testing, you can't know whether the slab is suitable on a given day.
A professionally installed epoxy floor, prepared correctly, will outlast a DIY job by years — often by a decade. The 10-year warranty we offer at Properties Unlimited Group exists because we control the preparation process from start to finish. That's not something a hardware store kit can back up.
How Long Does It Take?
Most residential garage epoxy jobs are completed within 10 days of booking, with the installation itself taking one to two days on-site. You'll need to allow curing time before parking vehicles back in the space — typically 48–72 hours for foot traffic and up to seven days for vehicle weight — but the disruption is minimal.
Is It Worth It for Resale?
A finished epoxy garage floor photographs well, presents well, and signals to buyers that the property has been well maintained. In Queensland's competitive property market, a clean, sealed garage floor is a genuine presentation asset — particularly for homes in suburbs where garages are a selling point.
More practically, epoxy protects the concrete slab itself. A bare concrete garage floor that's been absorbing oil, moisture, and impact for 20 years is a harder thing to sell than a sealed, protected surface in good condition.
The Bottom Line
For most Queensland homeowners, a professionally installed epoxy garage floor sits in the $3,240–$4,500 range for a standard double garage — and delivers a surface that handles everything a working garage throws at it for a decade or more, backed by warranty.
Get us out for a free on-site inspection first. We'll assess your slab, talk through the finish options, and give you a written quote before anything else happens.
Book your free garage floor inspection → propertiesunlimitedgroup.com.au/contact-us/