Your largest initial investment will be your down payment. The next most significant cost will probably be the land transfer taxes. You will also be paying for legal costs, and, potentially, a mortgage appraisal, home inspection, adjustments for property taxes and utilities and the HST on mortgage default insurance. Under some circumstances, a buyer might pay for a Survey as well.
Since each property and each buyer is unique, there may be other expenses involved which are not listed here.
I can assist you with estimating your one-time expenses.