Most PM's here charge 15-20%, most are 20, but will depend on what services they offer.

It will depend on the bank and their threshold / programs they are participating in. 

So many dependent on government.

Depending on the price point, they may already be running targeted ads in cities/metros for buyers that may be looking for a second home/vacation home.

If you have one of the older, turn of the century mid town houses, you are probably getting somewhere around 1600-2000 depending on the condition of the home, availability of a garage, etc.It is an older home, from the 40s I believe.

Sometimes you dont have much of a middle ground depending on the demographics.

Depending on the loan product, you may be able to exclude business debt once the business has paid the debt directly for 12 months.The income and losses related to the operation of the entity will affect the income side of your DTI (like Jay explained) if you own 25% or more of the entity.

It's a range and depends on the property type, location, end condition and rental strategy. 

If it is someone you know you can give them a straight return as if its a loan - can provide a lower interest rate to provide upside - it really depends on the lender and what are they concerned with and what is their risk profile. 

What I am saying is the tax bill for you could be wildly different depending on how long your partner has owned this property and how much depreciation they have taken.