Dishwasher Installation Cost by Type

Ontario's Building Code and the Ontario College of Trades define which work requires a licensed plumber. For a standard dishwasher swap using existing connections, a skilled handyman can legally do the work. However, if new water supply lines, drain connections, or shutoff valves need to be installed or modified, a licensed plumber (Class 306A) is required. Using an unlicensed tradesperson for plumbing work beyond appliance connections may void your home insurance. (Serving Markham, Ontario.)

Do You Need a Plumber or Handyman?

Ontario's Building Code and the Ontario College of Trades define which work requires a licensed plumber. For a standard dishwasher swap using existing connections, a skilled handyman can legally do the work. However, if new water supply lines, drain connections, or shutoff valves need to be installed or modified, a licensed plumber (Class 306A) is required. Using an unlicensed tradesperson for plumbing work beyond appliance connections may void your home insurance. (Serving Markham, Ontario.)

What Affects the Final Price

A standard dishwasher swap (replacing an existing unit with a new one using the same connections) takes 1–2 hours for a licensed plumber or experienced handyman. This includes disconnecting and removing the old unit, connecting the new supply line and drain hose, levelling, securing to the cabinet, and testing. A new rough-in installation (no existing connections) typically takes 3–5 hours and requires a licensed plumber. Cabinet modifications add 1–3 hours depending on scope. (Serving Markham, Ontario.)

How Long Does Dishwasher Installation Take?

A standard dishwasher swap (replacing an existing unit with a new one using the same connections) takes 1–2 hours for a licensed plumber or experienced handyman. This includes disconnecting and removing the old unit, connecting the new supply line and drain hose, levelling, securing to the cabinet, and testing. A new rough-in installation (no existing connections) typically takes 3–5 hours and requires a licensed plumber. Cabinet modifications add 1–3 hours depending on scope. (Serving Markham, Ontario.)

Do You Need a Permit to Install a Dishwasher in Ontario?

Labour rates for dishwasher installation vary across Ontario. Toronto and North York rates run $200–$350 for a standard swap. Suburban GTA cities (Mississauga, Brampton, Markham) average $175–$300. Smaller Ontario cities (Barrie, Guelph, Kingston) average $150–$250. Same-day availability is generally better outside the core GTA, where wait times can be 3–7 days during peak renovation season (April–October). (Serving Markham, Ontario.)

Dishwasher Installation Cost Ontario 2026 | Markham

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