Is the duplex owned by an entity or partnership of individuals or...?

You are closing these loans in an LLC or other entity.

Someone told me if I put the property in an entity's name, I could sell the entity with assets and the deed would not need to change.  

Same goes for DSCR loans - even if theyre not on your credit report, if you PG'd the loan (which is almost always the case), it will be included unless there is a justification to exclude it (such as it's been paid by your entity for at least 12 months and is included in a business cashflow analysis).If you're finding good deals and have cash for downpayments, but are hitting DTI roadblocks to acquire more properties, then DSCR loans are likely the answer.

Should I be charging the management fee based on the total portfolio or based on the number of units each entity has on their separate contract?

Do we need to hire a lawyer to draft our agreement and form an entity.

You can register any State's LLC in any other state with a foreign Entity Registration with the state you want to do business in.  

Lots of companies offer dwelling policies that accommodate personal or entity owned properties.  

We have one holding entity for each property.  

This may be where your initial disconnect was.Something else to keep in mind is your entity structure and how your entities file tax returns.