Construction Mortgage Ontario: Financing for New Builds and Renovations
A construction mortgage in Ontario funds a new home build or major renovation through staged payments, called draws, released as each phase is inspected and completed. You pay contractors as you go, without needing the full loan upfront.
Many clients come to us after a bank says no — usually because the house isn't built yet, income is self-employed, or the budget's grown past what was approved.
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A construction mortgage (also called a draw mortgage) funds a home build or major renovation in stages — called draws — released after a lender-appointed inspector confirms each milestone is complete. You typically need 20–25% down, a licensed builder or approved self-build plan, and a detailed budget. Interest is charged only on funds actually advanced, and the loan converts into a standard mortgage once construction is finished. Private lenders can approve construction financing in as little as 5 days when banks decline due to credit, income type, or project risk.
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01–DEFINITION
What Is a Construction Mortgage?
A construction mortgage is financing designed to build or substantially transform a home from the ground up. Unlike a conventional mortgage, which pays out a single lump sum on closing day to buy an already-completed property, a construction mortgage releases funds progressively as the build advances — protecting the lender against financing an asset that doesn’t exist yet, and giving you a structured way to pay contractors, suppliers, and trades as work is verified.
We arrange construction mortgage financing for three common situations:
- New builds — constructing a home on a vacant lot, including tear-downs and rebuilds.
- Major renovations — structural changes, additions, or full layout reconfigurations to an existing home.
- Refinance-to-build — refinancing an existing mortgage to fund large-scale renovation, sized against the home’s projected as-completed value.
REGULATORY REFERENCE
Construction financing in Canada operates alongside provincial builders’ lien legislation and CMHC’s insured lending framework. See CMHC’s construction financing programs and, in Ontario, the Construction Act governing lien holdbacks.
02–COMPARISON
Construction Loan vs. Conventional & Commercial Mortgages
Construction financing behaves differently from a standard purchase mortgage on almost every dimension — here’s how the three product types stack up.
| FEATURE | CONSTRUCTION MORTGAGE | COMMERCIAL MORTGAGE | RESIDENTIAL INSURED MORTGAGE |
|---|---|---|---|
| Disbursement | 3–5 progress draws | One-time lump sum | One-time lump sum |
| Max LTV | Up to 80% | Up to 85% | Up to 95% |
| Interest rate | Highest (risk premium) | Medium | Lowest |
| Amortization | Non-amortizing during build | Up to 40 years | Up to 25–30 years |
| Payments during term | Interest-only on funds advanced | Interest & principal | Interest & principal |
| Approval basis | Plans, budget, builder & financials | Income-generation & financials | Borrower financials |
– Rates and terms vary by lender and borrower profile; figures above reflect typical Canadian market ranges as of 2026.
03–COMPARISON
How Construction Mortgage Draws Actually Work
Funds are released backward — only after work is completed and a third-party inspector verifies progress. A typical 5-draw schedule looks like this:
— LIEN HOLDBACK RULE
Provincial builders’ lien laws require lenders to withhold roughly 10% of each draw from your general contractor for a statutory holdback period — about 60 days in Ontario and 55 days in B.C. — before final release, protecting you against unpaid subtrade claims registered against your title.
04–ELIGIBILITY
Requirements to Qualify for a Construction Mortgage
Funds are released backward — only after work is completed and a third-party inspector verifies progress. A typical 5-draw schedule looks like this:
Creditworthiness & Down Payment
A-lenders typically require a minimum credit score of 680 (often 700+), plus a down payment of 20–25% of the projected as-completed value. Private lenders can work with lower scores or non-traditional income by weighting land equity and project quality more heavily.
Plans, Budget & Builder
Lenders require a detailed, itemized construction budget, architectural plans, a fixed-price builder contract (or documented owner-build management experience), and proof the builder is licensed and insured.
Permits & Approvals
Municipal building permits and any zoning or conservation approvals must be in place, or clearly scheduled, before a lender will fund the first draw.
Financial Stability
Expect income verification, employment or business history review, and debt-servicing calculations covering both interest-only payments during the build and full payments once it converts to a standard mortgage.
05–APPLICATION
Step-by-Step: Getting Approved
Assess borrowing capacity
We review income, credit, existing debt, and land equity to establish what you can realistically finance before you commit to a build.
Submit plans, budget & builder details
Architectural drawings, an itemized cost breakdown, and your builder's licensing/insurance are packaged for lender review.
Receive pre-approval & draw schedule
We negotiate terms across our lender network and lock in a draw schedule that matches your contractor's payment expectations.
Finalize the mortgage agreement
Your lawyer confirms no liens are registered against the property before each draw is released to your builder.
Convert to a standard mortgage
Once the occupancy certificate is issued, your construction loan is refinanced or converted into standard principal-and-interest payments.
06– BUILD TYPE
Self-Build vs. Contractor Build
Who manages the project changes both your approval odds and your documentation burden.
Licensed General Contractor
The simplest path to approval. A fixed-price contract with a licensed, insured builder gives lenders a clear risk profile and predictable draw timeline.
- Fastest underwriting turnaround
- Widest lender selection (A, B & private)
- Fixed pricing reduces budget-overrun risk
You Act as General Contractor
Possible, but lenders view owner-builds as higher risk due to statistically higher rates of delay and cost overrun. You'll need to demonstrate relevant construction management experience or licensing.
- Tighter contingency requirements (typically 10–15% of budget)
- More documentation per draw request
- Best matched to specialized/private construction lenders
07– PRODUCT TYPES
Construction Mortgage Options in Canada
Progress-Draw Mortgage
The standard structure: funds release in stages as milestones are inspected and verified. Best for full new-build projects.
Completion Mortgage
A single lump sum released once the project is finished — suited to fast renovations or builds financed with your own interim capital.
Purchase-Plus-Improvements
Roll renovation costs into your purchase mortgage. Insurers allow up to 20% of as-improved value (10% under CMHC), capped at $40,000, held back until work is verified.
08– GOVERNMENT PROGRAMS
CMHC Programs & Tax Incentives
If your project involves multi-unit or purpose-built rental housing, federal programs can significantly reduce your financing cost:
- CMHC Apartment Construction Loan Program (ACLP) — for 5+ unit projects, financing up to 100% of loan-to-cost with below-market construction-period rates.
- CMHC MLI Select — reduced insurance premiums and equity requirements for builds meeting affordability, energy-efficiency, or accessibility targets.
- GST Elimination on Purpose-Built Rentals — full federal GST removal on qualifying new multi-unit rental construction (minimum 4 units).
- CMHC Eco Plus Refund — a 25% refund on CMHC mortgage insurance premiums for builds meeting green building standards.
Full program details are published directly by CMHC. We can assess your project’s eligibility as part of your free consultation.
08– CALCULATION
How to Calculate a Construction Mortgage
Loan-to-Value (LTV): most lenders finance up to 80% of the projected as-completed property value — not the raw build cost. For a home appraised at $500,000 once finished, that means up to $400,000 in available construction financing, with the remaining $100,000 covered by your down payment or existing land equity.
If you already own the lot, its current equity can often count toward your required down payment, reducing the cash you need to bring to closing.
Building a Custom Home in the Greater Toronto Area
A couple in the GTA owned a vacant lot outright and wanted to build a $650,000 custom home. With strong land equity but variable self-employed income that a major bank declined, we placed their file with a private construction lender offering a 4-draw progress schedule.
Their existing land equity covered the majority of the required down payment, funds were released at foundation, lock-up, drywall and completion, and the loan converted into a standard 5-year fixed mortgage the month their occupancy certificate was issued.
09– PRICING
Construction Mortgage Rates
Construction mortgage rates run higher than conventional insured mortgages because the lender is financing an incomplete, harder-to-resell asset. Your rate is shaped by:
Credit & Financial History
Credit score, income verification method, and existing debt load all factor into your risk pricing.
Size & Complexity
Larger, more complex builds carry more schedule and cost-overrun risk, which lenders price accordingly.
Experience & Track Record
A proven, licensed builder with a strong completion history typically unlocks better terms than a first-time owner-builder.
05– RISK CHECKLIST
Common Mistakes to Avoid
- Underestimating total costs or skipping required permit approvals before applying.
- Choosing an unlicensed or uninsured builder, which can disqualify you from A-lender financing entirely.
- Not budgeting a 10–15% contingency fund for unexpected costs and delays.
- Requesting draws earlier than needed, which increases interest costs unnecessarily since interest accrues from the moment each draw is disbursed.
10– FAQ
Frequently Asked Questions
How much down payment do I need for a construction mortgage in Canada?
Most lenders require 20–25% of the projected as-completed value, though private lenders may accept less if you already hold equity in the land. The exact figure depends on your credit profile, the lender, and whether you own the lot outright.
How many draws are in a typical Canadian construction mortgage?
Most progress-draw mortgages release funds in 3 to 5 stages tied to milestones such as foundation, lock-up, drywall and final completion. Private lenders sometimes offer more frequent draws for large custom builds.
Are construction mortgage rates higher than a regular mortgage?
Yes. Because the lender is financing an incomplete asset, construction mortgage rates typically run higher than a conventional insured mortgage. Rate depends on credit score, project size, builder experience, and whether you use an A-lender or a private lender.
Can I get a construction mortgage as a self-employed borrower?
Yes. Private and alternative lenders can qualify self-employed borrowers using bank statements or stated income rather than traditional T4 verification — often the fastest path when banks decline construction financing.
What happens to a construction mortgage once the build is finished?
The construction loan is typically converted into a standard mortgage or refinanced and paid out in full once an occupancy or completion certificate is issued, at which point regular principal-and-interest payments begin.
Do I need a licensed builder to qualify for a construction mortgage?
Bank lenders generally require a licensed, insured builder. If you plan to act as your own general contractor, you'll typically need a specialized self-build construction loan and must demonstrate relevant construction management experience.
How do I get a construction mortgage in Ontario?
To get a construction mortgage in Ontario, you generally need to provide details about the property, construction plans, estimated project costs, builder, permits, income, credit history, and available equity or down payment. The lender reviews both your financial profile and the proposed project before determining the amount and structure of financing available.
Construction mortgages are typically funded through progress draws rather than one lump-sum payment. Each draw is released as specific construction milestones are completed and verified. Working with a mortgage professional can help you identify suitable A, alternative, or private lenders based on your project and financial situation.
What are the requirements for a construction mortgage in Ontario?
Construction mortgage requirements vary between lenders, but commonly include a detailed construction budget, architectural plans, building permits, information about the builder or contractor, proof of income, credit information, and evidence of sufficient equity or down payment.
Lenders also want to understand how the project will be completed and whether the projected costs are realistic. A licensed and insured builder with a clear contract can make the application easier to assess. For self-build projects, additional documentation and construction experience may be required.
11– WHY WORK WITH US
A Toronto-Based Broker With Access to 100+ Lenders
A, B & Private Lenders
When banks decline construction financing, we place your file with alternative and private lenders who specialize in it.
5-Day Approval Decisions
Streamlined underwriting gets you a funding decision fast, so your build timeline doesn't stall.
Pre-Approval to Completion
One point of contact from your first draw request through conversion to a standard mortgage.
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Book Your Construction Mortgage Consultation
Toronto & the GTA — virtual across Ontario & Canada
In-person & virtual meetings, 7 days a week
FSRA #10557 — Dominion Lending Centres