# 2026 Canadian Construction Mortgage Guide: Progress Draws, Draw Inspections & Underwriting Rules

> Discover how progress draw construction mortgages work in Canada in 2026, including how funds are released in stages tied to verified construction milestones, CMHC (Canada Mortgage and Housing Corporation) insurance eligibility up to $1.5 million, lender holdback rules, draw inspection requirements, and OSFI (Office of the Superintendent of Financial Institutions) underwriting standards for federally regulated lenders.

Category: Purchasing
Last verified: 2026-02-18
Source: https://ratellow.com/guides/new-construction-draws

## TL;DR
- The December 2024 federal mortgage reforms raised the maximum insurable home price to $1.5 million, expanding CMHC-insured financing to more new construction buyers in high-cost Canadian markets. (Department of Finance Canada, December 2024)
- 30-year amortizations on insured mortgages are now available for new construction purchases and for all first-time homebuyers — a targeted expansion from the previous 25-year maximum. (Department of Finance Canada, December 2024)
- Uninsured mortgage holders who switch lenders at renewal without increasing their loan amount are now exempt from the Mortgage Qualifying Rate (MQR) stress test, as confirmed by OSFI effective November 2024. (OSFI, November 2024)
- Progress draw mortgages are governed by OSFI Guideline B-20, which sets underwriting expectations for federally regulated lenders on land acquisition, development, and construction (ADC) exposures — including loan-to-value limits and draw inspection standards.

## 2026 Canadian Construction Mortgage Guide: Progress Draws, Draw Inspections & Underwriting Rules
Financing new construction or a pre-construction property works very differently from buying an existing home. Instead of receiving your full mortgage upfront, a progress draw mortgage releases funds in stages — each tied to a verified construction milestone such as foundation completion, framing, or lock-up. This staged approach protects both you and your lender, but it also means navigating draw inspections, lender holdbacks, and specific OSFI and CMHC eligibility rules. This guide walks you through every step so you can plan your budget, avoid costly delays, and reach final occupancy with confidence.

- **Funds released in stages, not all at once:** A progress draw mortgage disburses money only as construction hits verified milestones — typically 3 to 5 draws covering foundation, framing, lock-up, drywall, and completion. This means you only pay interest on the funds already advanced, keeping your carrying costs lower during the build.
- **Draw inspections protect your investment:** Before each draw is released, your lender will typically require an independent inspection confirming the work is complete and on budget. Understanding this process helps you coordinate with your builder and avoid holdbacks that can stall your project.
- **Lender holdbacks are standard — plan for them:** Lenders commonly hold back 10% of each draw until the project reaches the next milestone or until a statutory lien period expires. Knowing this in advance lets you and your builder manage cash flow without surprises.
- **30-year amortization is now available for eligible new construction:** As of December 2024, insured mortgages on new construction purchases qualify for a 30-year amortization period, reducing your monthly payment compared to the previous 25-year maximum. First-time buyers purchasing new builds benefit most from this change.
- **CMHC insurance applies up to $1.5 million for qualifying properties:** The December 2024 federal mortgage reforms raised the maximum insurable home price from $1 million to $1.5 million, opening CMHC-insured financing — with as little as 5–10% down — to a broader range of new construction projects across Canada's higher-cost markets.

## Strategy & FAQ
This guide provides a detailed breakdown of how progress draw construction mortgages are structured and underwritten in Canada under 2026 rules. It covers the full draw cycle — from initial advance through final holdback release — including draw inspection requirements, lender holdback mechanics, and how federally regulated financial institutions (FRFIs) apply OSFI's Guideline B-20 to land acquisition, development, and construction (ADC) exposures. It also clarifies exactly which borrowers and property types qualify for the expanded 30-year amortization and the $1.5 million CMHC insurance cap introduced in December 2024, making it a practical reference for advising clients on new build financing.

### What are the key considerations for land acquisition, development, and construction (ADC) loans?
Land acquisition, development, and construction (ADC) loans require careful consideration because they are risk-weighted at 150% unless specific criteria are met [osfi-car-2026-rental, 4.1.13]. These exposures involve financing land acquisition for development and construction purposes, or the development and construction of residential or commercial properties.

- Construction loans can be more expensive due to higher risk for the lender.
- If your loan depends on future property sales, it's seen as riskier.
- You might get better loan terms on a new build if you have a lot of pre-sales or a large down payment.
- For taller condo projects, pre-sales are extra important; rental buildings have different rules.
- When buying land to build on, a smaller mortgage (larger down payment) can help you qualify for better rates.

### What documentation is required for mortgage approval in new construction?
Thorough loan documentation is essential, providing a clear record of credit decision factors and supporting lender risk management [osfi-b20-baseline, Loan documentation]. This enables independent audits by FRFIs (federally-regulated financial institutions) and OSFI (Office of the Superintendent of Financial Institutions).

- Your lender needs to keep detailed records to show they followed the rules when approving your mortgage.
- You'll need to provide documents like proof of income, details about your debts, your down payment, the purchase agreement, and home insurance information.
- If you have any credit issues, be prepared to explain how you're managing them and why you can still afford the mortgage.
- If your mortgage is insured, the lender will keep a record confirming the insurance company's commitment.
- Your lender may ask for updated information about your finances or the property, especially if something changes during the construction process.

### How is property value assessed for loan-to-value (LTV) calculations during construction?
FRFIs must carefully assess and adjust property value for LTV calculations in new construction, considering factors like location, property type, market price, trends, and sustainability risks [osfi-b20-baseline, Property value used for the LTV ratio]. Conservative valuation is crucial in rapidly appreciating markets.

- Your lender will consider factors that could affect your property's value or how easy it is to sell when calculating your loan amount.
- If your local housing market is rising quickly, your lender might use a more cautious approach to estimate your property's value for your mortgage.
- When you're buying a property, the lender won't usually lend you more than the actual purchase price.
- Lenders can adjust property values or set loan limits to account for potential risks in property values.
- Your lender has guidelines for assessing property values and will carefully review appraisals and valuation methods.

### What are the LTV ratio requirements for different types of mortgages?
The LTV ratio is critical for defining residential mortgages; FRFIs must align their LTV limits with the risk of each mortgage type [osfi-b20-baseline, LTV Ratio and Loan Type]. Residential mortgages with LTV ratios exceeding 80% require insurance, as mandated by the _Bank Act_, subsection 418(1); _Trust and Loan Companies Act_, subsection 418(1); _Insurance Companies Act_, subsection 469(1); and the _Cooperative Credit Associations Act_, subsection 382.1 (1).

- If your down payment is less than 20%, you'll need mortgage insurance.
- With a down payment of 20% or more, you typically don't need mortgage insurance.
- For higher-risk mortgages, you may need a larger down payment of at least 35%.
- Higher-risk mortgages can include those where it's hard to prove your income, your credit score is low, or the property is difficult to sell.
- Home equity lines of credit (HELOCs) can increase your overall debt, so lenders consider this carefully.

## Sources
- 4.1.13 Land acquisition, development and construction exposures — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/capital-adequacy-requirements-car-2026-chapter-4-credit-risk-standardized-approach#4.1.13
- Footnotes — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/capital-adequacy-requirements-car-guideline-2026
- I. Purpose and scope of the guideline — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/residential-mortgage-underwriting-practices-procedures-guideline-2017#1.0
- Page 3 — https://assets.cmhc-schl.gc.ca/sf/project/cmhc/pdfs/factsheets/new/cmhc-quick-reference.pdf#page=3