In production
Hedonic Price Index
A controlled-quality price benchmark that strips out unit-mix and project-effect noise — so you see real movement, not headline averages.
Talk to us about thisTools
Tools built to answer real property questions.
We build the tools we wish existed when evaluating property. Some are free and open to anyone — whether you are buying, selling, refinancing, or holding. Others are the internal models behind the advisory work.
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Calculators, open to anyone.
Free, no sign-up, built on current IRAS and MAS rules. They run on Apexstone Apps at apps.apexstone-group.com.
Sale & Cash-Out
What you actually walk away with, and what a property can release before you sell it.
Sales Proceeds
“If I sell today, how much cash do I actually get back?”
Nets loan redemption, CPF refund with accrued interest, and selling costs off the sale price — the gap between headline gain and real return.
Use CalculatorEquity Term Loan
“How much can I unlock from a property without selling it?”
Sizes a cash-out refinance against your property value and outstanding loan, so you can compare it against a sale.
Use CalculatorDecoupling
“What does it cost to free one owner from ABSD?”
Prices the buy-out — stamp duties, legal costs, and financing — before you commit to restructuring ownership.
Use CalculatorResale Purchase Timeline
“When is each payment due if I buy a resale unit?”
Maps OTP, exercise, and completion dates against the cash you need on each one.
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Mortgage & Loan
What you can borrow, what it costs to hold, and when the money is due.
Mortgage Loan
“What will the monthly repayment be?”
Instalments, total interest, and how sensitive both are to the rate you lock in.
Use CalculatorProgressive Payment
“How does cash flow work on a new launch?”
Lays out the BUC drawdown schedule so you can see repayments ramp up through construction.
Use CalculatorPledge / Unpledge Assets
“Can pledging assets close my loan shortfall?”
Shows how pledged or unpledged funds change the loan a bank will extend.
Use CalculatorTDSR / MSR Eligibility
“How much am I allowed to borrow?”
Applies the 55% TDSR and 30% MSR limits to your income and existing commitments.
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Stamp Duty
The IRAS duties that decide whether a transaction still makes sense on paper.
ABSD & BSD
“What stamp duty will I pay on this purchase?”
Buyer’s and Additional Buyer’s Stamp Duty at current IRAS rates, by residency and property count.
Use CalculatorSeller's Stamp Duty
“Am I still inside the SSD window?”
Works out the duty on an early sale from your purchase date and holding period.
Use CalculatorRental Stamp Duty
“What duty is payable on this lease?”
Calculates lease duty from rent and tenure before you sign a tenancy agreement.
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Platform capability
The models behind the recommendations.
These are not self-serve products. They are the internal analysis we bring to a client brief.
In production
Shortlisting Engine
Filter the entire universe of new and resale stock against your investment thesis. Surface the few candidates worth a deeper look.
Talk to us about thisComing soon
Market Watch
Track velocity, absorption, and pricing momentum across submarkets — calibrated against URA benchmarks.
Talk to us about thisComing soon
Location Intelligence
Layered geographic signals — connectivity, amenities, supply pipeline — to ground every shortlist in real-world context.
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Book a walk-through of our toolkit.
We’ll show you how the models work on your specific brief — and what they’d surface for your portfolio today.