Building a custom home in Ontario in 2026? Understand the enhanced HST rebate’s owner-built eligibility dates, value limits, actual-tax cap, forms and filing process before you set the budget.

Financing a custom home requires more planning than getting a regular mortgage. This complete Ontario guide explains construction mortgages, progress draws, HELOCs, land equity, lender requirements, HST rebates, budgeting and the mistakes that can delay your project.

Most Ontario custom homes use 9- or 10-foot ceilings, but the right height depends on the room, design, budget and municipal height limits. Learn the Ontario Building Code minimums and the ceiling heights commonly recommended for luxury custom homes.