A "mortgage-helper home" is a single-family Calgary house where a legal secondary suite generates enough rent to offset a meaningful share of the owner's mortgage payment. Every listing here is drawn from the same legal-suite classification we use sitewide — we don't imply cashflow numbers we can't verify.
How lenders treat suite income
Most Canadian A-lenders will count a portion of documented rental income from a legal, registered secondary suite toward your qualifying income (commonly 50%–100% of gross rent, less at insured levels). An unregistered or "non-conforming" suite is generally not counted, which is why the legal/illegal distinction on this site is not academic — it changes what house you can afford. Confirm the current policy with your mortgage broker; rules and rental-income add-backs change.
What rent to expect
We do not publish suite rent estimates on individual listings. Rent depends on unit size, entrance type, parking, finish, utilities and current Calgary vacancy — a REALTOR® can pull recent comparable rents for a specific property. Anchor your underwriting to actual rented comps, not an average.
Due diligence checklist
- Copy of the suite's development and building permit files.
- Confirmation the property is on the City of Calgary Secondary Suite Registry.
- Separate egress, fire separation, HVAC and smoke/CO detection.
- Lender pre-approval on the assumption that suite income counts.
- Landlord insurance quote before firming up conditions.
LegalSuites.ca reads CREA DDF® listing remarks and structured fields to interpret each listing's suite status. That is a lead for discovery — not a legal determination. Before writing an offer, confirm any suite against the City of Calgary secondary-suite information page and its Secondary Suite Registry, and engage a licensed REALTOR® and Alberta-qualified inspector.
