A purchase at One Chuan Grove is a building under construction, so the money does not change hands in one go. It follows the Progressive Payment Scheme, the statutory schedule that ties each instalment to a certified construction milestone. Understanding the shape of it matters more than memorising the percentages, because the shape is what determines how much cash is needed and when.
The opening move is the booking fee: 5 per cent of the purchase price, paid in cash on the grant of the Option to Purchase. CPF cannot be used for this portion, which surprises buyers who have budgeted on their Ordinary Account balance.
Within the following eight weeks the Sale & Purchase Agreement is issued and exercised, and a further 15 per cent falls due. That second tranche can draw on CPF Ordinary Account savings subject to withdrawal limits. Stamp duty is payable to IRAS within 14 days of exercising the Option, and sits outside the schedule entirely.
So the first 20 per cent of the price, plus the duties and legal fees, is settled before a single milestone has been certified. The payment scheme page carries the full table.
From the foundation stage onwards the bank pays the developer directly as each milestone is certified: 10 per cent on completion of foundation work, 10 per cent on the reinforced concrete framework, then four stages of 5 per cent for brick walls, roofing and ceiling, electrical and plumbing and plastering, and car park, roads and drains. Twenty-five per cent falls at Temporary Occupation Permit and the final 15 per cent on the Certificate of Statutory Completion.
The part that confuses first-time buyers is that the bank does not begin disbursing at the foundation stage in the amount of that stage. The downpayment has already covered the first slice of the price, so at 75 per cent loan-to-value the 25 per cent downpayment absorbs everything up to the 25 per cent mark. The first actual disbursement is only the portion above it.
Because interest accrues only on what has been drawn, the monthly instalment starts small and steps up with each milestone. On a build that runs three to four years to Temporary Occupation Permit, that means the full instalment is not reached until well into the project, which is one of the genuine advantages of buying under construction rather than completed.
The progressive payment calculator models this stage by stage for a given price, tenure, rate and buyer profile, and separates the estimated monthly interest from the principal at each step.
The distinction that governs planning is not total outlay but the cash component. The minimum cash downpayment is 5 per cent of the price on a first housing loan at 75 per cent LTV, rising to 10 per cent where the tenure pushes the LTV band down to 55 per cent, and to 25 per cent where the buyer is already servicing one or more housing loans.
Stamp duty and legal fees are paid in cash first and may be reimbursed from CPF afterwards where the balance allows. CPF Ordinary Account savings can cover the balance downpayment and the monthly instalments, subject to the applicable withdrawal limits.
Buyers frequently ask about deferred payment arrangements because they were widely used on some past launches. A deferred scheme is a developer election rather than a buyer entitlement, and the Progressive Payment Scheme above is the basis on which a building under construction is sold. Where any alternative is offered, it appears in the Sale & Purchase Agreement and is published on this site.
Statutory financing figures verified against MAS on 18 September 2026.
Two points are worth knowing before the Option is granted. If a buyer does not exercise the Option within the period stated in it, the option fee is forfeited in accordance with its terms, and the developer is free to re-offer the unit. After the Sale & Purchase Agreement is exercised the position is contractual and considerably less flexible.
The other is that the progressive schedule is tied to certified construction rather than to a calendar, so instalments arrive when milestones are reached rather than on fixed dates. Planning cash flow against the stages rather than against a date is the more reliable approach, and the Sale & Purchase Agreement sets out the developer’s obligations on timing.
The e-brochure, the floor plans and the pricing reach registered parties as the developer issues them.