Mortgage Insurance Rule Changes Enable Homeowners to Add Secondary Suites

Carmelo Mamertino • January 2, 2025

As housing affordability challenges persist across Canada, innovative solutions are reshaping the way homeowners can contribute to housing supply. Starting January 15, 2025, new mortgage insurance rule changes will allow Canadian homeowners to access insured refinancing options to create secondary suites, such as basement apartments or laneway homes.


This move, announced in Budget 2024 and detailed by the Department of Finance Canada, is part of a broader strategy to increase housing density and improve affordability while offering homeowners the chance to generate additional income.


Why These Changes Matter

Historically, converting extra space into rental units has been both costly and mired in municipal red tape. Recent zoning reforms across Canada’s major cities, driven by Housing Accelerator Fund agreements, are reducing these barriers. The creation of secondary suites not only expands housing supply but also provides financial benefits to homeowners, such as offering seniors additional income to support aging in place.


Key Parameters for the New Rules

The new mortgage insurance program is designed to enable homeowners to build legal, self-contained secondary suites that comply with municipal requirements.


Here are the essential details:

Eligibility Requirements

Homeowners must already own the property.

The homeowner or a close relative must occupy one of the existing units.

Additional units must not be used as short-term rentals.


Project Specifications

New units must be fully self-contained with separate entrances (e.g., basement suites, laneway homes).

Up to four total dwelling units are allowed, including existing units.


Financial Parameters

The “as improved” property value must be less than $2 million.

Homeowners can refinance up to 90% of the property’s value, including the enhanced value from secondary suites.

The maximum amortization period is 30 years.

Additional financing must not exceed the project’s costs.


When Do These Rules Take Effect?

Starting January 15, 2025, lenders can submit applications for mortgage insurance under these updated parameters. This applies to all eligible properties across Canada, provided the new units align with municipal zoning requirements.


What This Means for Homeowners

For homeowners with underutilized space, such as basements or detached garages, this new program offers an opportunity to increase property value and create a source of long-term income. By building legal secondary suites, homeowners can contribute to Canada’s rental housing market while gaining financial security.


A Step Toward Housing Solutions

As housing supply remains a pressing issue, these mortgage insurance changes reflect a commitment to practical, homeowner-driven solutions. Whether you’re a senior looking to age in place or a family seeking to maximize your property’s potential, these changes represent an exciting opportunity to invest in your home and your community.

Stay informed and explore your options with your lender to determine if this program is right for you. The path to unlocking your property’s potential begins in 2025.



Carmelo Mamertino

Why a Mortgage Pre-Approval Protects Both Your Head and Your Heart

By Carmelo Mamertino • May 20, 2026
Why a Mortgage Pre-Approval Protects Both Your Head and Your Heart There’s no denying it—buying a home is an emotional journey. In a competitive market, it can feel like you need to stretch beyond your comfort zone or bid above asking just to have a chance. That pressure can make it hard to separate what you want from what you can realistically afford. One of the biggest pitfalls buyers face is falling in love with a home that’s outside their price range. Once that happens, every other property seems like a compromise—even the ones that might have been a perfect fit otherwise. The best way to avoid this heartache? Get pre-approved before you start shopping. What a Pre-Approval Does for You A mortgage pre-approval gives you more than just a number—it provides clarity, confidence, and protection: Know your buying power : Shop within your true price range and avoid disappointment. Spot potential roadblocks : Uncover issues like credit bureau errors before you make an offer. Get organized : Learn exactly what documentation you’ll need so there are no surprises. Lock in a rate : Many lenders hold your rate for 30–120 days, giving you peace of mind if rates rise. Save yourself heartache : Protect yourself from falling for a home you can’t afford. Head vs. Heart Buying a home is about balance. Your head tells you what’s financially sound, your heart tells you what feels right—and both matter. A pre-approval helps bring those two sides together, so you can make confident choices without emotional stress clouding your judgment. The Bottom Line Looking at properties for fun is one thing—but if you’re serious about buying, a pre-approval is the smartest first step you can take. It sets realistic expectations, saves time, and protects your emotions along the way. If you’d like to explore your options and get pre-approved, I’d be happy to walk through the process with you. Let’s make sure you’re ready to shop with confidence.

Get Unbiased Advice: Work with an Independent Mortgage Pro

By Carmelo Mamertino • May 13, 2026
Why Work With an Independent Mortgage Professional? If you’re in the market for a mortgage, here’s the most important thing to know: Working with an independent mortgage professional can save you money and provide better options than dealing directly with a single bank. If that’s all you read—great! But if you’d like to understand why that statement is true, keep reading. The Best Mortgage Isn’t Just About the Lowest Rate It’s easy to fall for slick marketing that promotes ultra-low mortgage rates. But the lowest rate doesn’t always mean the lowest cost . The best mortgage is the one that costs you the least amount of money over time —not just the one with the flashiest headline rate. Things like: Prepayment penalties Portability Flexibility to refinance Amortization structure Fixed vs. variable terms …can all affect the true cost of your mortgage. An independent mortgage professional looks beyond the rate. They’ll help you find a product that fits your unique financial situation , long-term goals, and lifestyle—so you’re not hit with expensive surprises down the road. Save Time (and Your Sanity) Applying for a mortgage can be complicated. Every lender has different rules, documents, and policies—and trying to navigate them all on your own can be time-consuming and frustrating. When you work with an independent mortgage professional: You fill out one application They shop that application across multiple lenders You get expert advice tailored to your needs This means less paperwork , less stress , and more confidence in your options. Get Unbiased Advice That Puts You First Bank specialists work for the bank. Their job is to sell you that bank’s mortgage products—whether or not it’s the best deal for you. Independent mortgage professionals work for you. They’re provincially licensed, and their job is to help you: Compare multiple lenders Understand the fine print Make informed, long-term financial decisions And the best part? Their services are typically free to you . Mortgage professionals are paid a standardized fee by the lender when a mortgage is placed—so you get expert guidance without any out-of-pocket cost. Access More Mortgage Options When you go to your bank, you’re limited to that bank’s mortgage products. When you go to an independent mortgage professional, you get access to: Major banks Credit unions Monoline lenders (who only offer mortgages) Alternative and private lenders (if needed) That’s far more choice , and a much better chance of finding a mortgage that truly fits your needs and goals. The Bottom Line If you want to: Save money over the life of your mortgage Save time by avoiding unnecessary back-and-forth Access more lenders and products Get honest, client-first advice …then working with an independent mortgage professional is one of the smartest decisions you can make. Let’s Make a Plan That Works for You If you're ready to talk about mortgage financing—or just want to explore your options—I'm here to help. Let's connect and put together a strategy that makes sense for your goals and your future. Reach out anytime. I’d be happy to help.