How much you can write off depends on the number of expenses you have. You may want to have a look at the following article from TurboTax - Dos and Don’ts: CCA for Rental Property Explained , as it explains that you can deduct rental expenses which include homeowner’s insurance, property taxes, maintenance fees, advertising, mortgage interest, utility costs, and property management fees
To answer your second question yes you can depreciate your house as well. To find more information about this I would recommend you check this link from the CRA. It will provide detail about CCA for rental properties
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