Seller financing, subject-to deals (taking over the seller’s mortgage), or lease options can create terms that work for both parties.

I understand the safest option is to have a lawyer review the lease, but I figured I'd try to answer my beginner questions here and not waste the lawyers time (and my money) on the "for dummies" explanation.Thank you!

Another option is to rent it out, take out a cash-out DSCR loan, and invest the cash in another investment.

There are two options I have offered and I want to get a check on here if I am off base with my offer or if I need to push harder.

The other option I have not seen mentioned yet is finding a corespondent who can originate for you.

I say that because every decent legit place I know of in market, yes offers the option of doing just tenant placement, for self-managing. 

Because I've been having the hardest time finding a new CPA, I wanted to open my options by considering virtual firms. 

I'd like to move forward with option "b".

I'm not sure if any also lend in Canada, but you might want to expand your search to include "non-recourse" just in case it leads to some more options for you.

@Pat Aboukhaled I would ULS (unit lot segment) the primary house and include a clause in the call option that would prevent them acquiring the DADU.