Ask which property type "rents best" and you'll get a confident answer from whoever you ask — condo investors swear by low management, duplex owners by two income streams, single-family holders by stability and appreciation. They're all right, and that's the point: there is no universal winner. What rents best is per-strategy and per-city, because each form trades off differently. A condo is low-maintenance but carries a fee and sits in the middle of Ontario's condo-oversupply story; a duplex gives you two income streams and house-hack potential but older-stock repair bills; a single-family leans toward stability and appreciation but fails 100% the month it sits empty. The right form flips by city depending on price-to-rent, the tenant pool, and which forms the local market actually supplies. This guide compares the three the honest way — gross rent versus net after each form's cost profile, and single-tenant versus multi-tenant risk — so you can match the form to your strategy and your city. Figures dated July 2026, CMHC-sourced; market data, not investment advice.