The Pre-Sale Math Almost Nobody Explains Properly

You walk into a Brentwood presentation centre. The salesperson shows you renderings, floorplans, finishes. You like a 2-bed unit on the 22nd floor at $1.1M, with completion estimated for late 2027. The deposit schedule is 5% at signing, 5% at 60 days, 5% at 12 months, 5% at 24 months — totaling 20% over the build. You sign.

What you've actually bought: a contract to purchase a unit that doesn't yet exist, at a price fixed today, with no mortgage attached. The mortgage piece doesn't get sorted out until completion is 90-120 days away — sometimes 3 or 4 years after you signed.

For Burnaby pre-sale buyers, this gap between signing and financing is the source of almost every horror story you've heard.

What "Qualifying at Completion" Actually Means

When your Brentwood or Metrotown tower nears completion, the lender will fully underwrite your mortgage at that moment — using:

• Your current income (whatever it is at that time)

• Your current credit profile (including any debts you've added since signing)

• Your current employment status

• The qualifying rules in effect at that completion date

• The rates available at that completion date

None of these were locked in when you signed the purchase agreement 2-3 years earlier. If your income dropped, you changed jobs to lower-paying work, you took on a car loan, or rates moved materially — your approval at completion can look very different from what you assumed at signing.

Three Real Risk Scenarios Burnaby Buyers Should Plan For

Scenario 1: Income loss or career change. A buyer signed a 2024 pre-sale planning a salary of $145,000 sustaining a $1.1M purchase. By 2027 completion, they've left for a startup earning $95,000 plus equity. The equity won't qualify; the salary alone won't carry the mortgage. Outcome: forced to take a partner on title, find a guarantor, accept a smaller mortgage and put more down, or walk away from the deposit.

Scenario 2: Adding new debt. A buyer signed pre-sale, then over the next two years bought a car ($45,000 loan, $700/month payment) and took a small business loan to start a side business. At completion, their debt service ratios have ballooned. The mortgage they could have qualified for at signing is no longer available.

Scenario 3: Rate environment shift. A buyer signed in 2021 when 5-year fixed rates were around 2.5%. Completion in 2024 lands them on rates closer to 5%. Their payment is 30%-40% higher than they modelled. Even though their income hasn't changed, their stress-tested approval is materially smaller.

Every one of these scenarios has played out in real Burnaby files over the past 3 years. They're not edge cases.

How a Good Broker Structures a Pre-Sale

If you're entering a pre-sale purchase agreement, your broker's job is to manage the build window — not just submit a mortgage application at the end. Here's what that looks like in practice:

Phase 1 — At signing: Document your current income, debts, credit, employment, and source of deposit funds. Model your maximum approval today. Run sensitivity analysis: what if rates are 1% higher at completion? What if income drops 15%? This becomes your baseline.

Phase 2 — Annual check-ins: Every 12 months until completion, revisit your numbers. Has income kept pace? Have you added debt? Are you on track? If risks emerge — a new car loan, a partner change, a job switch — surface them early enough to plan around.

Phase 3 — 120 days from completion: Submit pre-approval and lock a rate hold. This is your earliest line of defence against a market shift.

Phase 4 — 60-30 days from completion: Full underwriting. Property appraisal (yes, pre-sales get reappraised — and sometimes the developer's contract price exceeds current market value, creating an appraisal gap). Sign mortgage commitment. Schedule notary appointment.

Phase 5 — Completion day: Funds advanced, title transferred, keys handed over.

A bank approaching the file in the last 30 days runs all of these phases compressed into a few weeks. The risk surface is much higher.

Deposit Structure and Funding Sources

Most Burnaby pre-sale deposit schedules require 15%-20% over the build period. The funding source matters for mortgage qualifying later:

• Personal savings: Easiest. Standard 90-day history at completion.

• FHSA or RRSP HBP: Allowed, but the withdrawal happens at the closing window — not at deposit.

• Family gift: Acceptable with a properly documented gift letter.

• Sale of another property: Common for downsizers; timing the sale matters.

• Borrowed funds: Most lenders won't accept a HELOC or unsecured loan as down payment for the final mortgage. The deposit can be borrowed during the build, but it must be repaid before completion or sourced from elsewhere.

The Appraisal Gap Problem

One unique Burnaby risk: the property appraisal at completion might come in below the contract price you agreed to 2-3 years earlier. This is called an appraisal gap.

Example: You signed at $1.1M in 2024. Completion is in mid-2027. The unit appraises at $1.0M because the local market has softened or oversupply has compressed values. Your mortgage is based on the lower appraised value — meaning you'll need an additional $100,000 in down payment to close, on top of what you'd already planned.

This isn't theoretical. Appraisal gaps have caused dozens of completion failures in Brentwood and Metrotown since 2022. Plan for the possibility: have an emergency reserve of 10%-15% beyond your expected down payment.

The Right Question to Ask Before Signing a Pre-Sale

Forget "what rate will I get?" That question is unanswerable years out.

Ask instead: "At completion, what's the worst-case scenario where I can still close, and what does it require?"

If the worst case is unattainable for you, the pre-sale is too risky. If the worst case is manageable with reasonable planning, you have a deal.

A broker can model this for you in a single sitting. Book a free 15-minute consultation before you sign — not after. Read more about our Burnaby mortgage services here.

Talk to a Local Broker Who Actually Knows This Market

Milka Lukacevic has spent more than 20 years helping homeowners across the Lower Mainland — Port Coquitlam, Coquitlam, Burnaby, Pitt Meadows, Port Moody, and beyond — secure financing that works for their real lives. Independent. Free consultation. Over 30 lender relationships.

Book a free 15-minute call or call 604-942-4042 — most clients have a clear path forward by the end of the conversation.