The answer
Neither is automatically better. Compare purchase basis, legal parcel and unit structure, current and achievable rents, tenancy, owner-paid utilities, financing and appraisal, insurance, parking, suite or use status, fire and safety evidence, inspection, capital systems, management intensity, vacancy diversification, cash reserves, and future buyer pool. More units can diversify income while increasing operational, regulatory, financing, and resale complexity.
Calgary-specific context
Calgary side-by-side duplexes, suited halves, legal fourplexes, infill projects, condominiumized units, and properties marketed as multifamily can represent very different legal and financial products.
What to do next
Underwrite each actual property from documents and leases, not the unit label, and identify both the investor and owner-occupier exit paths.
Verify before relying
Official sources for this topic
These sources explain the rules and records relevant to this topic. Check the current requirements for your property.
Check the current information at the linked source. Ask the appropriate professional how it applies to your property.
Important
Real estate rules, market conditions, property records, taxes, financing terms, bylaws, and physical conditions can change. Verify time-sensitive and property-specific facts with current official sources and the appropriate qualified professional before acting.
RELATED GUIDES / Suites & fourplexes
Check rental income and whether the use is permitted.
Separate advertised rent from signed leases and lawful use. Verify suite records, occupancy, insurance, financing, expenses and tenancy obligations; test a vacancy and repair scenario before relying on projected cash flow.
Affiliated network resources provide context. Confirm rules, approvals and property records with the responsible authority.