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Markham zoning & development feasibility

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Second units (ARUs)What Markham's zoning and Ontario's Bill 23 allow for second units and basement apartments — permissions, the 3-unit rule, and how to check your lot. Garden suitesMarkham garden suite and laneway home rules after Bill 23 — detached backyard units, the 3-unit allowance, and how to check your lot's feasibility. Lot severanceHow lot severance works in Markham — the consent process, what makes a lot severable, frontage and area minimums, and how to gauge feasibility fast. Multiplex (2–4 units)What Markham and Ontario's Bill 23 allow for multiplexes — converting or building 2–4 units on a residential lot, and how to check your lot.