If you’re a builder, civil contractor, or project manager scoping concrete work across Melbourne and trying to figure out the right procurement model — labour hire, subcontract, or your own crew — the answer depends on the scope, your in-house capability, your programme certainty, and your appetite for fixed-price versus variable-cost delivery. Each model has its place. Picking the wrong one for the job is one of the most common cost overruns on Melbourne builds.

Here’s how to think through the decision properly.

The Three Models — A Quick Definition

Labour hire: a subcontractor supplies skilled tradespeople (concreters, formworkers, finishers) who work under your direction, on your programme, with your materials. You pay an hourly or daily rate per person. The labour hire firm carries the workers’ costs (super, insurance, PPE, training) and bills you the all-in rate.

Subcontract: a subcontractor takes a defined scope of work as a fixed-price (or schedule-of-rates) package. They supply crew, materials, plant, and management. They’re responsible for delivery to spec, on programme. You pay against milestones or progress.

Your own crew: you employ concreters and formworkers directly as PAYG staff. You carry all the on-costs — super, leave, training, PPE, equipment, vehicles. You also carry the risk when there’s no work for them.

Most Melbourne builders use a mix of all three across different projects and phases.

When Subcontract Wins

Subcontract is the right model when:

• The scope is well-defined — engineered drawings, structural spec, clear deliverables
• You want fixed-price delivery — predictable cost, transferred risk, no day-rate exposure
• You don’t have specialist in-house capability — FRP, suspended slabs, civil pours, structural walls
• The structural concrete sequence is tightly coupled (formwork + reinforcement + pour) and benefits from one accountable party
• You don’t want to manage the crew directly — programme, materials, sequencing all owned by the sub
• You need certainty on programme and quality — the sub’s reputation depends on delivery

Most commercial, civil, and structural concrete works fall into this category. For more on Cinerari’s civil concrete subcontract capability across Melbourne, see the dedicated landing page.

When Labour Hire Wins

Labour hire is the right model when:

• You have your own programme and want it controlled in-house
• You have your own materials supply already locked in
• Your existing crew is at capacity and you need flex without hiring
• You need specialist hands (formworker, finisher, leading hand) to integrate with your crew
• The scope changes are significant — labour hire flexes; fixed-price subcontracts get expensive when scope shifts
• You want to scale up and down quickly — labour hire flexes day-to-day; subcontract doesn’t

Volume residential builders typically use labour hire heavily — they have their own slab and footing programme but flex via labour hire when peak demand hits. For more on concreter labour hire across Melbourne, see the service page.

When Your Own Crew Wins

Building an in-house concrete crew makes sense when:

• Concrete is a core competency for your business — not a one-off scope
• You have continuous workflow 12 months a year that justifies the on-costs
• You want full control of methodology, quality, and scheduling
• Your scale justifies the overhead — supervision, vehicles, plant, training, insurance
• You’re large enough to absorb the downturns — your own crew has to be paid whether the work flow is 10/10 or 4/10

For most builders, in-house concrete crew makes sense once volume hits a particular threshold — typically when you’re running enough concurrent slabs that subcontract scheduling becomes a constraint. Below that threshold, the on-costs and risk usually outweigh the control benefits.

The Hybrid That Most Builders Actually Use

Most successful Melbourne builders run a hybrid model:

• In-house leading hand or foreman who manages the concrete scope across all projects — methodology, supplier relationships, quality oversight
• Subcontract for structural and specialist scopes — FRP, suspended slabs, civil structures, anything engineered
• Labour hire for volume residential and ad-hoc — flex up for peak demand, flex down when work slows
• Long-term subcontract relationships with one or two preferred subs who know the builder’s standards and flex with the workload

The hybrid balances control, cost, and risk. It also means the builder isn’t dependent on any single supplier or any single procurement model.

Cost Comparison — What You’re Actually Paying For

Direct hourly rate isn’t the right comparison. The real cost comparison is:

• Subcontract — fixed price covers labour, materials, plant, supervision, insurance, profit. Compare against the total scope deliverable, not the headline labour rate
• Labour hire — hourly rate covers wage + super + insurance + agency margin + PPE + training. You add materials, plant, supervision. Effective cost is wage rate + ~50-80% on-cost + your supervision overhead
• Your own crew — wage + super + workers comp + training + PPE + vehicles + plant + supervision + management overhead + downtime cost. Effective cost is wage rate + ~80-120% on-cost + the cost of carrying them through low-work periods

When you compare apples-to-apples on total cost (not just headline rate), subcontract usually wins for defined scopes, labour hire wins for ad-hoc and specialist gaps, and own-crew wins only when volume justifies the carrying cost.

How to Decide on Your Project

Walk through these questions:

1. Is the scope well-defined and engineered? → subcontract probably right
2. Do you have your own programme and want crew flex? → labour hire probably right
3. Is concrete a recurring core function for your business? → consider in-house
4. Is the scope structural or specialist (FRP, suspended slabs, civil)? → subcontract
5. Are you a volume residential builder running 50+ slabs a year? → mix of in-house + subcontract
6. Are you a one-off custom builder? → subcontract for almost everything

Get a Quote for Your Melbourne Concrete Scope

Cinerari Contracting delivers concrete subcontract packages and labour hire across Melbourne and regional Victoria. Whether you’re after fixed-price subcontract delivery, labour hire to flex your existing crew, or a mix of both — we can structure the engagement to suit how you want to run the work.

If you have a project anywhere across Melbourne or Regional Victoria, contact our team.

Phone: 0400 692 550
Email: hello@cineraricontracting.com

More Concrete & Civil Insights

• Concreter Labour Hire in Sunshine
• How Concrete Slabs Are Priced in Melbourne
• FRP Concrete Explained
• Concrete Contractor in St Albans
• Concrete Contractor in Sunshine

Our Concrete & Civil Services

• Concreter Labour Hire Melbourne
• Civil Concrete Subcontractor Melbourne
• Commercial Concreter Melbourne
• Formwork Melbourne
• Concrete Slabs Melbourne
• Concrete Footings Melbourne
• Retaining Walls Melbourne
• Concrete Driveways Melbourne
• Concrete Pits Melbourne

Return to Cinerari Contracting home — concrete and civil subcontracting across Melbourne and Regional Victoria.