https://www.torontodivorcelaw.com/family-divorce-law/prenuptial-marriage/
A prenuptial agreement cannot affect a spouse’s equal right to possession of the matrimonial home. The only things that can affect a spouse’s equal right to the home are a separation agreement, divorce, or court order.
https://www.cleo.on.ca/en/publications/propertydiv/equalization
the home's total value is shared in the equalization payment, not just the change in its value during the marriage.
https://boulbyweinberg.com/blogs-articles/matrimonial-home/what-common-law-couples-need-to-know-part-1-the-matrimonial-home/
the value of a matrimonial home at the date of marriage is included in the equation