You have to go commercial lending or get a private or creative financing deal. Most institutional lenders will have debt to income ratio requirements. 

 We would need a bit more details to give you some thoughts. For example insured (CMHC for example) loans have a different debt to income ratio maximum than conventional loans do. B lenders often can use last 6 months of cashflow if you have a corporation for example. Long story short it really depends. I would recommend speaking to an investor-focused mortgage broker.