How to Choose a Car Park Line Marking Contractor in Australia

A few years ago, a shopping centre manager in Frankston called us to inspect a carpark that had been remarked three months earlier. The lines were already lifting in sections. The accessible bays were 2,900mm wide — 300mm short of the AS/NZS 2890.6 requirement. There was no completion documentation. The contractor who did the job had invoiced, collected payment, and was unreachable.

The manager had to pay for the job to be done again. Properly this time.

That situation isn't rare. It happens regularly across commercial properties in Victoria and nationally, and it happens because most people hiring a line marking contractor don't know what to check. The price looks reasonable, the contractor seems professional enough, and the job gets booked. It's only afterwards that the problems surface.

This guide gives you the checklist. For the standards themselves, see our carpark line marking regulations guide. Everything a facility manager, property owner, strata manager, or council procurement officer should verify before committing to any line marking contractor for a commercial carpark project.

Upload your site plans for a quote from a contractor who ticks every box on this list. We respond within 48 hours with a fixed-price proposal.

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Check 1: Insurance — And Not Just Whether They Have It

Every line marking contractor will tell you they have insurance. The question is how much.

For commercial carpark work, the minimum you should accept is $20M public liability insurance. That's not an arbitrary number — it's what most commercial property insurers, council procurement frameworks, and strata management agreements require before a contractor can access a site. If a contractor carries $5M or $10M public liability, they may not even be able to legally work on your site under your own insurance obligations.

Professional indemnity insurance matters too. Public liability covers physical damage and injury during the job. Professional indemnity covers you if the contractor's advice or work leads to a compliance failure — if they told you the accessible bay dimensions were fine and they weren't, for example. $10M professional indemnity is the appropriate level for commercial work.

Ask for a current certificate of currency before signing anything. Not a PDF they scanned two years ago. A current certificate, dated within the last 12 months. Any legitimate contractor will have this ready within 24 hours of being asked.

Line Marking Australia carries $20M public liability and $10M professional indemnity. We provide certificates of currency on request as a standard part of our quoting process.

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Check 2: Approved Contractor Status

In Victoria, work on or adjacent to declared roads requires a VicRoads approved contractor. That includes carpark entry and exit points that cross a footpath or interface with a public road — which covers most commercial carparks.

For projects in New South Wales, Transport for NSW approval applies for road-adjacent work. Queensland has its own approval framework through the Department of Transport and Main Roads.

A contractor without the relevant state approval has two options if they're working at your site: skip the work that requires approval (leaving incomplete compliance), or do the work without approval (illegal, and your problem if something goes wrong). Neither is acceptable.

This is worth checking explicitly, not assuming. Ask: "Are you a VicRoads approved contractor?" or "Do you hold Transport for NSW approval?" A yes answer should be verifiable — they should be able to tell you their approval number.

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Check 3: Knowledge of the Specific Standards That Apply to Your Carpark

This is the check most people skip, and it's the one that matters most for compliance.

Ask the contractor: what width do accessible parking bays need to be under AS/NZS 2890.6?

The answer is 3,200mm. If they say "about three metres," "2.9 should be fine," or anything other than 3,200mm, they don't know the standard. Walk away. An accessible bay marked at 2,900mm looks compliant. It isn't. And when the council notice arrives, the argument that you hired a contractor who seemed to know what they were doing won't help.

Ask what the gradient limit is for an accessible bay. The answer is 1:40 (2.5%) in any direction. Ask whether both a surface marking and a sign are required for an accessible bay. The answer is yes — both are required under AS/NZS 2890.6. One without the other isn't compliant.

For a standard bay, ask the minimum width under AS/NZS 2890.1. The answer is 2,400mm for a 90-degree bay. Ask what standard governs the paint product. The answer is AS 4049.2 for waterborne traffic paint.

These are not trick questions. Any contractor who's been doing commercial carpark work seriously for more than a year should answer these from memory. Those who can't are either new to the commercial space or haven't been doing the work to standard.

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Check 4: Surface Preparation Process

Ask the contractor how they prepare a surface before marking. This single question will tell you more about the quality of the job than any portfolio of before-and-after photos.

The correct answer includes: pressure washing at minimum 3,000 PSI, commercial degreasing for any oil-contaminated areas, moisture testing before paint application, and CSP-2 surface profiling for smooth concrete. The total prep time for a standard commercial carpark remark is two to four hours before paint touches the surface.

The wrong answer is any variation of "we'll clean it as we go" or "the surface looks fine, it shouldn't need much prep." A contractor who doesn't describe a specific preparation process is a contractor who skips it, or who does the minimum. And inadequate surface preparation is the single most common reason line marking fails before it should.

We learned the cost of skipping this properly back in 2017. A carpark in Clayton had oil contamination across approximately 30% of the surface that we didn't degrease thoroughly enough on the first pass. The markings in those areas lifted within six weeks. We stripped and redid the entire contaminated section at our own cost, roughly $6,800 in rework and materials. Expensive lesson. Our degreasing process is now significantly more rigorous as a result. Every site gets a contamination assessment before a single litre of paint is ordered.

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Check 5: Fixed Pricing, Not Estimates

Ask whether the quote is a fixed price or an estimate.

A fixed price means the number on the proposal is the number on the invoice, unless there's a formal scope change that you've approved. An estimate is a starting point that can go in any direction.

There's no legitimate reason for open-ended pricing on a standard commercial carpark remarking job. The scope is visible. The surface area can be measured. The product quantities can be calculated. If a contractor can't give you a fixed price from plans or a site inspection, they either haven't assessed the job properly or they're keeping their options open on the final invoice. Neither is good.

The only legitimate scope change in a carpark marking job is significant surface damage discovered on the day that wasn't visible in the plans or assessment — deep potholing, unexpected contamination, or structural issues that require repair before marking can proceed. A professional contractor handles this by stopping, documenting what they've found, providing you with options and costs, and getting your approval before proceeding. Not by calling you from the site and adding $1,500 to the invoice.

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Check 6: Completion Documentation

Ask what documentation the contractor provides when the job is complete.

The answer should include, at minimum: date-stamped completion photographs covering all marked areas; a dimension verification record confirming bay widths, accessible bay counts, and aisle widths as marked; material certification confirming the paint product meets AS 4049.2; and a signed completion document.

This documentation is not a nice-to-have. It's what you need if a council officer requests evidence of compliance, if a DDA complaint is lodged, or if your building insurer asks for proof of adequate marking following an incident. "We had it marked last year" is not documentation. A signed completion record with a dimension verification sheet is.

According to Safe Work Australia, documenting hazard controls including floor and carpark marking as part of a workplace's safety management system is a genuine obligation, not a bureaucratic formality. The documentation your contractor provides is part of that record.

Ask for a sample of the documentation they provide before you book. Any contractor who's been providing proper documentation as a standard practice will have an example ready immediately. Any contractor who gets evasive about this question is telling you they don't have a formal documentation process.

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Check 7: Relevant Experience With Your Facility Type

A contractor who primarily does residential driveways and small carparks isn't the right choice for a 400-bay shopping centre project. It's not that they can't physically do the work — it's that they're unlikely to have the access management experience, the crew scale, the equipment capacity, or the compliance documentation process that a large commercial project requires.

Ask specifically about their experience with your type of facility. Shopping centre? Ask if they've done comparable projects and what the access arrangements were. Hospital? Ask how they handle infection control zones and restricted access. Multi-level carpark? Ask how they manage different surface types across levels and the reflectivity requirements for lower levels with limited natural light.

A contractor with genuine relevant experience will give you specific answers. Vague claims about "many years of experience" without specifics aren't reassuring. "We've completed seven shopping centre projects in the last two years, the largest was 620 bays over four overnight shifts at a regional Victoria centre" is specific. That's what experience sounds like.

We've been doing this since 2009. More than 5,000 projects across all eight states and territories. Our experience covers everything from 20-bay strata carparks in Scoresby to multi-level shopping centre projects in Laverton North and Cheltenham. If your project type is one we've done, we'll tell you about comparable jobs and what we learned from them. If it's outside our experience, we'll tell you that too.

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Check 8: Scheduling and Access Management

Commercial carpark projects almost always require work outside business hours. Retail carparks need overnight access. Hospital carparks can't be fully closed during the day. Industrial carparks may have restricted windows tied to shift patterns.

Ask how the contractor manages access windows. Do they have night crews available, or is their after-hours offer actually one person doing a weekend at standard rates? Can they complete a 400-bay carpark in a single overnight window, or will it take multiple nights? What's their process if they run behind schedule and the carpark needs to open at 7am regardless?

The answer to these questions tells you a lot about whether the contractor is set up for commercial work or whether they're a smaller operation taking on a job that's larger than their usual scope.

Night shifts aren't glamorous. Finishing at 4am in a Melbourne winter carpark isn't fun. But it's when the work needs to happen, and a contractor who's genuinely set up for it treats the access window as a planning constraint to be managed, not a problem to be dealt with on the day.

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The Benefits of Getting This Right

Hiring the right contractor isn't just about avoiding a bad job. It's about what you get on the other side.

A compliant carpark protects you from council notices and DDA complaints. Properly documented completion records give you evidence of compliance if you ever need it. Fixed-price quoting means your budget holds. A contractor who knows the standards means the accessible bays are the right dimensions, the pedestrian crossings are where they should be, and the markings will last the service life they're supposed to.

And honestly, it saves you from spending time managing a problem that shouldn't exist in the first place. The shopping centre manager in Frankston who called us spent three months dealing with a situation that a 20-minute pre-booking checklist would have prevented.

Ready to book with a contractor who ticks every box on this list? Upload your site plans and we'll send a fixed-price proposal within 48 hours.

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Frequently Asked Questions

What insurance should a car park line marking contractor have?

A professional car park line marking contractor should carry a minimum of $20M public liability insurance for commercial and government sites, and $10M professional indemnity. Always ask for a current certificate of currency — a document dated within the last 12 months, not a scanned copy from a previous year. Some contractors carry only $5M public liability, which may not satisfy your site's access requirements.

Does a car park line marking contractor need VicRoads approval?

VicRoads approval is required for work on or directly adjacent to declared roads in Victoria, which includes most commercial carpark entry and exit points that cross a footpath or interface with a public road. A contractor without approval may be limited in what they can legally do at your site. For any doubt, use an approved contractor.

What documentation should a car park line marking contractor provide?

At minimum: date-stamped completion photographs, a dimension verification record confirming bay widths and accessible bay counts, material certification confirming AS 4049.2 compliance, and a signed completion document. This is what you need if a council officer or insurer asks for evidence of compliance. Ask for a sample of their documentation before you book.

Should a car park line marking contractor quote fixed prices or estimates?

Fixed prices. There's no valid reason for open-ended pricing on a standard commercial remarking job. The scope is measurable. The product quantities are calculable. A legitimate scope change should be documented and approved by you before any additional work proceeds, not added to the invoice after the fact.

How do I know if a contractor understands AS/NZS 2890 compliance?

Ask them what width accessible bays need to be under AS/NZS 2890.6. The answer is 3,200mm. Ask the gradient limit. The answer is 1:40. Ask whether a surface symbol and sign are both required. The answer is yes. Any contractor who's doing commercial carpark work seriously should answer these from memory.

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Contact and About

Line Marking Australia has completed 5,000+ projects since 2009 across all eight Australian states and territories. VicRoads approved contractor. $20M public liability, $10M professional indemnity insurance. Fixed-price quoting. Full compliance documentation on every project.

Director: Niel Bennet Phone: 0417 460 236 Address: 240 Plenty Road, Bundoora VIC 3083 Email: info@linemarkingaustralia.com.au

Upload plans for a quote | View carpark line marking services

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