Yes you can claim a deduction for qualified rental expenses, even though you plan to move in at a later time.
You must report the rental income for the property and you can claim all the ordinary rental expenses (e.g. loan interest, insurance, depreciation, repairs & maintenance, management fees, etc.)
See What kinds of rental property expenses can I deduct? for a more complete list of deductible rental expenses.
See Where do I enter income and expenses from a rental property? for instructions on reporting rental income and expenses.
Legal fees for purchasing the property are added to the cost basis of the property and are then depreciated over 27.5 years. If you only rent the property for one year, you would end up deducting 3.63% (1/27.5) of those legal fees as part of the 1st year's depreciation.
Awesome ... thanks. One more question about this. I used $22,000 from my TFSA to help with the down payment of my property. Do I have to claim this amount on my 2020 taxes? If so, where?