Confession time this is a 4/2 house and yes there are adult family members living in the home who are not on the lease

I have a rental home in the suburbs of Portland, OR (in Clackamas County) and have been asked by two separate people if I would consider renting it out as an adult foster care home. 

If this is a true offer to rent, i would have the company sign and each adult tenant, this way they are all responsible should something happen, do not accept just the companies signature. some people may think this part of my answer is prejudice, that certainly is not how i want this to be viewed, it's only meant as to CYA, but if this is a contracting co. make sure that the workers that will be renting are legal as well, if not and something happens, you can forget ever recovering your costs in any way. maybe @Chris K. could answer if that is even a legal question you can ask a perspective renter ?

Much like a young adult child (live at home college student aged child).I will be interested to hear someone pipe up with the pros and cons of each way listed here. 

According to my client, her mom will "co-sign" on a lease, but in my experience landlords are interested in the credit and income of the adults who will actually live in their apartments, so a prospective tenant having a supportive mother doesn't impress them.Can anyone offer suggestions for this client, aside from getting her credit cleaned up?

@Ryan Davis We charge $40 per adult applicant.

A significant issue for the summer rentals is that a lot of parents are looking for summer apartments for their adult children.

Kids downstairs can bring theirs up stairs.....build it for the adults.

I lived in Bellmawr for all of my adult life until last year (moved to bigger home).Grew up, rented, then owned our own for 20+ years.yes mostly a blue-collar town.I consider it a safe town. 

As i have heard, many professionals can be involved in the buying process and i was curious as to who exactly would be needed in certain transactions such as wholesale deals or fix and flip, and rental investments. as a young adult trying to get in the business, i see it crucial to make sure i have to right people in my corner during a transaction.