A builder who asks for a large sum before a single brick is laid has told you something important about the risk you are being asked to carry. Twenty per cent on signing is common enough in the market to pass without question, but anything above five per cent should give you pause, particularly when the works are not due to commence for another six months. There is no good reason for your money to sit in someone else’s account that long. Kang Sheng Engineering asks for one to two per cent at signing, which is enough to secure the slot without shifting the risk onto you. Money that leaves your account far ahead of the work it pays for is money you may struggle to recover if the project falters, so the payment schedule deserves as much attention as the contract sum itself.

Getting the total right is only half the task. The other half is deciding when each portion falls due, and tying it to work you can actually see on site. A reliable rebuild contractor will welcome that discipline, because a fair schedule protects them as much as it protects you.

Why the structure protects you

The principle behind a good schedule is straightforward: payment should follow progress, not lead it. When each instalment is released only after a defined stage is complete, your money stays roughly in step with the value built into the house. If work stops, your exposure is limited to the stage in hand instead of months of construction you have paid for but not received.

That single principle, payment trailing progress, is the quiet backbone of a well-run rebuild. It keeps incentives aligned from the first week to the last, because the builder is always working toward the next verifiable milestone and you are only ever paying for value that already stands on your plot.

How a sound milestone schedule works

Milestone payments break the contract sum into instalments, each tied to a physical stage of the build. The stages are visible and verifiable, so there is little room for dispute about whether a payment has been earned. A typical landed rebuild might be broken down along these lines:

1. A modest deposit on signing, to secure the slot and cover mobilisation

2. Completion of substructure and foundations

3. Completion of the structural frame up to roof level

4. Completion of walls, roofing, and external works

5. Completion of mechanical and electrical (M&E) works and internal finishes

6. A final payment on handover, once outstanding items are cleared

The exact split varies with the project, but the logic holds throughout. Each release corresponds to something you or your consultant can inspect and confirm. That verifiability is the point, since it converts an abstract promise into a sequence of concrete checkpoints.

Retention adds a further layer. A small percentage of each payment, or of the contract sum, is commonly held back and released only after the defects liability period, giving the builder a clear reason to return and finish properly.

Variations deserve a mention too, since they are where even a clean schedule can drift. Changes you request during the build, or genuine site conditions nobody could foresee, may add to the cost, and a fair contract handles them through a documented variation process with prices agreed before the work proceeds. Payments for variations should sit alongside the milestone schedule and never quietly inflate the instalments already agreed.

The deposit question

Deposits are normal and reasonable. A builder has to order materials, book labour, and mobilise plant before earning anything, and a sensible upfront sum covers that. The concern is proportion, not principle.

A deposit that climbs toward a fifth or a half of the contract value shifts the balance of risk heavily onto you before any obligation has been discharged on the other side. The practice has given parts of the industry a poor name for a reason. A builder who has taken on work at unsustainably low prices can end up relying on fresh deposits from new clients to fund the projects already running, and each large downpayment buys a little more time. A homeowner who signs late in that cycle is the one left exposed when the money runs out. Reading the whole schedule in context is part of learning to read a builder’s quote properly, because a low headline price paired with a front-loaded payment plan can carry more risk than a higher quote with payments tied to progress.

The law behind progress claims

Staged payment is not merely good practice in Singapore, it sits within a legal framework. The Building and Construction Industry Security of Payment Act, administered by the BCA gives parties in the construction chain a statutory right to progress payments and a defined process for claiming and responding to them.

For a homeowner, the value is knowing that the pay-as-you-build model is the norm the industry is built around, not a favour a builder grants. A contractor who resists a reasonable, staged structure is stepping away from the ordinary shape of a construction contract, and that alone should give you pause.

The framework also gives you recourse if a dispute arises over a payment, through a structured adjudication process instead of an immediate trip to court. Most homeowners never need it, but knowing the mechanism exists changes the tenor of the conversation. It signals that payment is governed by clear rules that apply to both sides equally.

Warning signs in a schedule

Most payment problems announce themselves early if you know what to look for. A few patterns should prompt harder questions before you sign:

• A very large deposit demanded before any work begins
• Payments tied to dates on a calendar instead of stages on site
• Vague milestones that cannot be objectively verified
• Pressure to pay the next instalment before the current stage is genuinely complete, usually dressed up as urgency: prices are about to rise, materials must be secured now, subcontractors will not turn up unless they are paid first
• No retention held against defects after handover

How you pay for a rebuild deserves the same scrutiny as how much you pay, because the schedule is what keeps everyone honest once the work begins. At Kang Sheng Engineering, a BCA-registered General Builder Class 1, we set out clear milestone payments tied to real progress, so you always know what your money has bought. If you would like a payment structure explained stage by stage before you commit, our team is happy to take you through it.