Building a New Home in Canada: The Phase-by-Phase Checklist

The 7 phases of a Canadian new build

1. Pre-construction — lot, plans, budget with 15% contingency, mortgage pre-approval, builder references
2. Selections + allowances — flooring, lighting, fixtures, tracked against a written allowance schedule
3. Permits + site prep — building/plumbing/electrical/HVAC permits, excavation, foundation waterproofing
4. Framing + rough-in — plumbing, electrical, HVAC, and site utilities go in while walls are still open
5. Pre-drywall walkthrough — the last chance to change anything without cost
6. Finishes + PDI — Pre-Delivery Inspection, the document that starts your warranty clock
7. Closing + move-in — utilities transferred, address updated, warranty registered

A production/tract build runs 6–9 months from permit; a custom build runs 10–14 months. Weather, trade availability, and change orders extend timelines further.

Never waive the pre-drywall walkthrough

This single hour, walking the framed structure with the site supervisor before insulation goes in, prevents a decade of "I wish I'd added an outlet there." Bring the plans and confirm dimensions match, photograph every wall cavity for future reference, and get sign-off in writing.

• Confirm room dimensions and window/door rough openings match plans
• Add nailing blocks for grab bars, towel bars, and curtain rods before it's closed in
• Add extra outlets, data drops, or lighting — last chance without a change-order cost
• Verify smoke and CO detector wiring meets code

Rough-in items buyers forget

These are cheap during rough-in, while the walls are already open, and expensive to retrofit once they're closed in.

• Dedicated circuits for a garage fridge or chest freezer
• Whole-home surge protection and structured wiring for smart blinds or a network cabinet
• A garage floor drain and frost-free hose bibs with an interior shutoff
• A whole-home leak detector and a battery-backup sump pump
• Site utilities roughed in while the yard is already dug up: a sprinkler line, a yard hydrant, power and gas run to a shed

PDI and new-home warranty

The Pre-Delivery Inspection is a mandatory walkthrough with the builder before you take possession, where every deficiency gets documented in writing — this is your warranty starting point, not a formality. Test every switch, outlet, faucet, and appliance; open and close every window and door; check for drywall pops, seams, and caulking gaps.

In Ontario, the PDI starts your Tarion warranty clock, with 30-day, one-year, and two-year claim windows. Other provinces have their own equivalents — BC Home Warranty, Alberta New Home Warranty, GCR in Quebec — so confirm your builder is registered before you sign anything.