Key takeaways
- →This is a composite, illustrative scenario for teaching purposes — not a real Treadstone client file.
- →A construction or draw mortgage releases funds in stages tied to inspections — which means the lender is watching the property's title continuously through the build, not just once at commitment.
- →A registered construction lien, even a disputed one, can stall the next scheduled advance until it's resolved — regardless of how the rest of the project is progressing.
- →Holdback percentages and release timelines for construction contracts are set by provincial construction/builders lien legislation and vary by province — they aren't a single national rule.
This is an illustrative, composite scenario — not a real client file — built to show how a construction draw mortgage can hit a snag mid-build that has nothing to do with the borrower's finances at all.
Say a borrower in Ontario is building a custom home under a construction mortgage with progress advances released against a fixed draw schedule — foundation, framing, enclosure, and so on — each tied to a lender inspection. Midway through the build, an electrical subcontractor claims they weren't fully paid for completed work and registers a construction lien against the property. The build itself is on track. The financing suddenly isn't.
01 · How does a construction draw mortgage actually release funds?
Unlike a standard purchase mortgage funded in one lump sum, a construction or improvement mortgage releases money in progress advances as the build reaches agreed milestones — a structure CMHC's improvement mortgage loan insurance is built around, with funds tied to inspected, completed stages of work rather than released up front.
That structure protects the lender, but it also means the lender's counsel is checking the property's title before every single advance — not once at the start of the file. Anything that clouds title mid-build gets caught immediately, which is exactly what happened here.
02 · What actually stalled the draw?
A registered construction lien — even one the general contractor disputed as inaccurate — put a cloud on title that the lender's counsel wouldn't release funds against. The lender wasn't taking a position on who was right; it simply couldn't advance more money onto a title with an unresolved claim registered against it.
Ontario's Construction Act layers in its own timing pressure here: contracts are subject to a mandatory 10% holdback on the value of work performed, and as of January 1, 2026, that accumulated holdback must be released to contractors on an annual schedule rather than being held indefinitely until project completion. That gave the general contractor a real, deadline-driven reason to want the lien issue resolved quickly, not just eventually.
03 · How did the file get back on schedule?
The borrower's lawyer worked with the general contractor to get the lien discharged — in a case like this, often by paying the disputed amount into court or arranging a bond in the lien's place, which clears title without either side conceding the underlying dispute.
Once title was clear, the lender's inspector re-confirmed the completed stage of work, and the delayed advance released. The broker worked with the lender to slightly revise the remaining draw schedule to absorb the delay, rather than leaving the borrower to renegotiate every subsequent milestone from scratch.
Draw mortgages, watched through the whole build
A funded milestone is not the same as a finished file.
Treadstone's fulfillment associates track construction files through every advance, not just at commitment, so a title issue gets caught and resolved before it stalls the project.
04 · What does this file teach about draw mortgages generally?
A construction file isn't “underwritten once and then just funded in pieces” — title, budget, and progress all need to hold up at every single draw, which means new risks can appear mid-build that a purchase mortgage would never encounter.
Because holdback rules and lien timelines are set provincially and vary, a broker working construction files needs to know the specific rules in the province the build is happening in — not assume they're the same as the province next door.
05 · How can a broker reduce the odds of a repeat on the next build?
- 01Confirm the borrower's general contractor has a clear process for paying subcontractors on schedule, since unpaid subcontractors are the most common source of mid-build liens.
- 02Build a small buffer into the draw schedule's timing expectations for at least one unexpected title or inspection delay.
- 03Keep the borrower's real estate lawyer looped in for the duration of the build, not just at the start — a lien is a legal problem that needs legal resolution, fast.
- 04Check title again before assuming an advance will simply proceed on schedule, even for a build that has otherwise gone smoothly.
Frequently asked questions
This article is general information to help you scale — not a substitute for tailored advice on your specific business, licensing, or compliance obligations. All figures are illustrative examples for planning purposes; actual costs vary by province, market, and brokerage.