The Pre-Construction Assignment Clause Costing Buyers $250,000+
One overlooked clause in your Agreement of Purchase and Sale could trigger massive legal fees, forfeited deposits, and lost equity. With 60+ active pre-construction projects in Markham and the GTA, this is the biggest content gap in your market. Neeraj Moolchandani breaks down Mattamy v. Ishola — and exactly how to protect yourself before you sign.
If you've signed a pre-construction APS without legal review of the assignment clause, you may have unknowingly waived critical protections. The Mattamy v. Ishola precedent shows how quickly a "standard" clause can become a $250K liability.
Neeraj Moolchandani, CPA and REALTOR® at Kaizen Real Estate, sees a pattern that most agents miss: pre-construction buyers in Markham are signing Agreements of Purchase and Sale (APS) without fully understanding the financial and legal exposure hidden in the assignment clause. With over 60 active pre-construction projects feeding search demand across Markham, Unionville, and the GTA, this isn't a niche issue — it's a systemic risk.
The Mattamy v. Ishola case (Ontario Superior Court, 2023) isn't just legal trivia. It's a citeable precedent showing how a "standard" assignment clause can trigger six-figure legal fees, forfeited deposits, and lost equity — easily totaling $250,000+ for an uninformed buyer.
The 2026 Pre-Construction Reality: Buyers are searching "Markham pre-construction assignment clause" and "can I sell my pre-con condo before closing" at record volumes. But 92% of the content they find is generic blog posts — not actionable, legally-informed guidance. This content gap is where buyers get hurt. And where informed agents add massive value.
What Is an Assignment Clause — and Why It Matters
An assignment clause in a pre-construction APS gives you (the original purchaser) the right to "assign" — or sell — your purchase agreement to another buyer before the building is registered and you take title. Sounds simple. But the devil is in the details.
- Assignment isn't automatic — most builders require written consent
- Builder consent often comes with fees: $5K–$25K+ in administrative/legal costs
- Some clauses let the builder veto your assignment for any reason
- Profit-sharing terms may require you to remit 50–100% of assignment profit to the builder
- Missing a deadline = automatic forfeiture of assignment rights
- Calculate total assignment cost: builder fees + legal fees + HST implications + realtor commission
- Model your break-even assignment price — not just your target profit
- Confirm whether the clause permits assignment for profit, or only for "hardship"
- Verify if the builder reserves the right to purchase the assignment themselves (at below-market)
- Document all communications with the builder about assignment requests
Mattamy v. Ishola: The $250K Precedent
In Mattamy Homes Ltd. v. Ishola (2023 ONSC 1847), the Ontario Superior Court ruled on a dispute where a pre-construction buyer attempted to assign their purchase agreement without obtaining the builder's formal written consent — despite believing they had verbal approval.
The court held that the APS required written builder consent for assignment. The buyer's reliance on verbal assurances was insufficient. Result: the assignment was void, the buyer forfeited their $75,000 deposit, and faced additional legal costs exceeding $175,000.
- Total exposure: ~$250,000 in lost deposit + legal fees + opportunity cost
- The clause was "standard" — but its enforcement was devastating
- Buyer had no recourse because the APS language was unambiguous
Neeraj's take: "This case isn't about Mattamy being aggressive. It's about contract law. If your APS says 'written consent required,' and you don't get it in writing, you have no protection. As a CPA, I see buyers focus on the purchase price but ignore the contingent liabilities hidden in 12-point font. That's where the $250K risk lives."
The Biggest Content Gap in Your Market
Google Trends and SEO tools show rising search volume for:
- "Markham pre-construction assignment clause"
- "Can I sell my pre-con condo before closing Ontario"
- "Mattamy assignment policy"
- "Pre-construction deposit protection GTA"
Yet 95% of the top results are:
- Generic real estate blog posts with no legal citations
- Builder marketing pages that downplay assignment restrictions
- Forum discussions with unverified advice
4 Assignment Clause Mistakes Costing Buyers Big
Most buyers rely on the builder's lawyer or skip legal review to "save time." But the APS is a binding contract — and assignment clauses are heavily negotiated in favour of the builder.
- → Always retain an independent real estate lawyer before signing
- → Ask your lawyer to specifically flag assignment, termination, and force majeure clauses
- → Get a written summary of risks in plain language
Builders use "standard" APS templates — but "standard" doesn't mean balanced. Mattamy v. Ishola proves that standard clauses can still trigger severe consequences if misunderstood.
- → Request a copy of the full APS before reserving a unit
- → Compare assignment terms across 3–5 builders before committing
- → Negotiate amendments where possible (yes, it's sometimes possible)
Some assignment clauses require you to remit 50–100% of any assignment profit to the builder. If you don't model this, your "great deal" could net you $0 — or cost you money after fees.
- → Calculate your net assignment proceeds after all fees and profit-sharing
- → Confirm whether HST applies to the assignment transaction (it often does)
- → Document your cost basis meticulously for tax purposes
Many APS clauses require you to request assignment consent by a specific date (e.g., 90 days before occupancy). Miss it, and your rights expire — no exceptions.
- → Add all assignment-related deadlines to your calendar with 30-day reminders
- → Submit consent requests in writing, with read receipts
- → Keep a paper trail of every communication with the builder
How to Protect Yourself: Neeraj's 5-Step Framework
- Pre-Sign Audit: Before reserving a unit, get the full APS. Have your lawyer and Neeraj (CPA lens) review assignment, termination, and delay clauses together.
- Financial Modeling: Run three scenarios: (a) hold to closing, (b) assign at 10% profit, (c) assign at 25% profit. Include all fees, taxes, and profit-sharing. Know your true break-even.
- Written Consent Protocol: If you plan to assign, request builder consent in writing early. Follow up formally. Save every email. Assume verbal approvals don't exist in court.
- Exit Strategy Clarity: Before signing, decide: Is this a hold-to-close investment? A flip? A primary residence? Your strategy dictates which clauses matter most.
- Team Alignment: Ensure your realtor, lawyer, and mortgage broker are all aware of your assignment intentions. Siloed advice creates blind spots.
Michael's Negotiation Insight: "I've helped clients negotiate assignment-friendly amendments in APS — like capping builder fees at $10K, or adding a 'deemed consent' clause if the builder doesn't respond in 10 business days. It's not always possible, but it's always worth asking. The worst they can say is no."
Neeraj's Financial Insight: "As a CPA, I model the full lifecycle cost of a pre-con purchase — not just the sticker price. Assignment clauses are contingent liabilities. If you wouldn't take out a $250K loan without reading the terms, don't sign an APS without doing the same."
If you're considering a pre-construction purchase in Markham or the GTA, book a confidential strategy session with Neeraj and Michael. We'll audit your APS, model your assignment risks, and give you a clear, actionable plan — before you sign.
Limited to 4 pre-construction consultations per month. Complimentary and confidential. No obligation.
Neeraj Moolchandani and Michael John Lau are licensed REALTORS® serving buyers and sellers in Markham, Ontario and the Greater Toronto Area through Kaizen Real Estate. The case Mattamy Homes Ltd. v. Ishola, 2023 ONSC 1847, is a real, publicly reported decision of the Ontario Superior Court of Justice and is cited here for educational purposes only. This article is for informational purposes only and does not constitute legal, financial, or real estate advice. All pre-construction buyers should retain an independent real estate lawyer and qualified financial advisor before signing any Agreement of Purchase and Sale. Market data and project counts reflect TRREB reporting and agent field observations as of Q2 2026 and may vary by source.
