A construction payment should reflect work that has been completed, not work that is merely scheduled. That simple principle sits at the centre of any guide to construction payment stages. For Melbourne homeowners planning a custom home, knockdown rebuild, extension or dual-occupancy project, understanding when and why payments fall due gives you greater control over one of the biggest investments you will make.

A clear progress-payment schedule is more than an administrative detail. It connects your budget to visible construction milestones, creates a shared expectation with your builder and helps prevent surprises before work begins. The right schedule will be set out in your domestic building contract, with each claim tied to an agreed stage of work.

What are construction payment stages?

Construction payment stages, often called progress payments, divide the contract price across key points in the build. Rather than paying the full cost upfront, you make payments as your home moves from site preparation to structure, enclosure, internal completion and handover.

For a new home, Victorian contracts commonly use a deposit followed by base, frame, lock-up and fixing stages. The final balance is generally paid at practical completion, once the home is ready for occupation and the agreed works have been completed.

This structure protects both parties. It gives the builder cash flow to procure materials, coordinate trades and keep work progressing. At the same time, it means homeowners retain a meaningful portion of the contract value until the house reaches later stages and the work can be assessed.

The exact percentages, definitions and timing must be written into your contract. They should never be left to a verbal understanding or a rough estimate in an email.

The usual payment stages for a new home

While every contract needs to reflect the project, the following stages are widely used for new homes in Victoria. A major renovation or extension can follow a different sequence because the existing house, access constraints and staged works affect how progress is measured.

Deposit

The deposit secures the contract and allows early project administration to proceed. Under Victorian domestic building requirements, the maximum deposit depends on the total contract price. For contracts over $20,000, it is generally capped at 5 per cent.

Before paying a deposit, ensure the contract identifies the full scope of work, specifications, plans, allowances, payment stages and relevant approvals. You should also confirm the builder’s registration and, where required, that Domestic Building Insurance is in place. This is the point to ask questions, not the point to rush past them.

Base stage

The base stage is reached when the site has been prepared and the foundations or slab are complete. Depending on the construction method, this can include demolition completion, excavation, footings, drainage below the slab, reinforcement and concrete works.

For a conventional new-home contract, the base payment is often around 15 per cent of the contract price. The key issue is not the label alone. Check the contract definition of “base” so you understand what must be complete before a claim is issued.

Frame stage

At frame stage, the structural skeleton of the home is in place. This commonly includes wall frames, roof trusses, structural steel where required, and sometimes roof covering, depending on the contract wording.

A frame payment is commonly about 20 per cent. This is an exciting moment because the scale and layout of your home become visible, but it is also a valuable time to inspect the work against the plans. Confirm room sizes, window openings and major structural features while changes are still easier to manage.

Lock-up stage

Lock-up means the home can be secured from the weather and unauthorised entry. External walls, roofing, windows and external doors are generally complete, although the precise definition varies between contracts and building systems.

For many new homes, lock-up is the largest progress payment, often around 35 per cent. That reflects the significant materials and labour involved in taking a structure from an open frame to an enclosed building. It is sensible to review the claim carefully, particularly where custom cladding, large glazing packages or complex roofing are part of the design.

Fixing stage

The fixing stage covers much of what makes the interior feel like a home. Plaster, internal doors and trims, cabinetry, waterproofing, tiling, benchtops and other internal finishes may be included, subject to your contract.

This stage is commonly around 25 per cent. It can feel busy because several trades are working across the home at once. Selections made earlier become highly visible, so clear documentation matters. If you have changed a tile, tapware item or joinery detail during construction, make sure any variation has been approved in writing and its cost is understood before the payment is due.

Practical completion and final payment

Practical completion is reached when the works are complete except for minor defects or omissions that do not prevent you from reasonably occupying and using the home. The final payment is often the remaining balance, commonly 5 per cent in a standard new-home schedule.

Before making this payment, attend a practical completion inspection with your builder. Record any incomplete items or defects in writing and agree on how they will be addressed. A fair defects list is not about searching for fault. It is a practical record that helps close out the project properly.

Why the payment schedule may differ for renovations and extensions

A standard new-home schedule does not always suit a major renovation, heritage alteration or extension to an occupied home. Existing conditions can only be fully understood once selective demolition begins. Concealed structural issues, ageing services, unsuitable soil conditions or non-compliant previous work may require a variation.

That does not mean the budget should become unclear. It means the contract needs well-defined stages that match the actual sequence of the work. A renovation payment schedule may refer to demolition, structural alterations, roof completion, services rough-in, internal linings and final completion instead of the usual base-to-fixing framework.

For these projects, provisional sums and prime cost items require particular attention. They are allowances, not fixed final amounts. Ask what has been allowed, what assumptions sit behind the allowance and how any difference will be calculated. A transparent builder will explain this before construction starts, not after an invoice arrives.

How to assess a progress-payment claim

When you receive a payment claim, compare it with the signed contract rather than relying on memory. Check that the claimed stage is complete according to the contract definition, that approved variations are clearly separated from the base contract amount, and that the invoice shows the remaining balance.

A site walk-through before payment can be helpful, especially at frame, lock-up and practical completion. You do not need to be a construction expert to ask clear questions: What work is included in this stage? What remains outstanding? Are there approved variations affecting this amount? What is planned next?

If something does not appear to match the contract, raise it promptly and calmly. Keep communications in writing, including site meeting notes and variation approvals. Delaying a legitimate payment can slow the project, but paying for incomplete work without clarification can create avoidable stress. The right approach is timely, documented discussion.

Variations should never be hidden in a payment claim

Variations are changes to the agreed scope, price or timeframe. They may be requested by you, required by an authority or caused by conditions that could not reasonably have been identified earlier. In Melbourne projects, examples can include additional engineering, rock excavation, stormwater upgrades or changes needed to satisfy planning and building requirements.

A variation should describe the work, its cost effect and any time impact. It should be approved in writing before the work proceeds wherever possible. Do not accept vague wording such as “site extras” without an explanation of what was found, why it was outside the original scope and how the amount was calculated.

Fixed-price contracts provide valuable certainty, but no contract can remove every unknown in a complex building project. What matters is that exclusions, allowances and variation procedures are transparent from day one.

Questions to settle before signing

Before committing to a building contract, make sure you can answer these questions with confidence:

• What does each payment stage include, and what evidence shows it is complete?
• What deposit is payable, and what insurance or approvals are required before work starts?
• Which items are fixed price, and which are allowances or provisional sums?
• How will variations be priced, approved and added to the payment schedule?
• What happens if weather, supply delays or unforeseen site conditions affect timing?

These questions are not a sign of distrust. They are how homeowners and builders establish a clear working relationship before the first machine arrives on site.

Payment clarity protects the whole project

The best construction payment schedule is easy to follow, tied to real progress and supported by straightforward communication. At In2Homes Construction, that clarity is part of creating a controlled building experience, from early design coordination through to handover and warranty support.

Keep every contract, invoice, variation and inspection note in one place, and review each stage before it becomes urgent. When your payments follow clear milestones, you can focus less on chasing answers and more on watching your home take shape.