I will demand a third party with independent appraisals.  

@Ted Klein I have spent hundreds of hours attempting to estimate repair costs based on certain independent variables, such as the age of the home, size, number of bedrooms and bathrooms, etc., for SFR. 

My only thought would be that you are using the same parcel for the 4 units, possibly defeating the ability to claim each unit as an independent dwelling. 

Each deal is different and they should be analyzed independently.

Unlike some "consultants" or "brokers" who seek to enter into site marketing agreements, we actually have capital and have the full capability to build sites and manage all communications infrastructure for a property owner.Each site is very specific and should be vetted independently, but hopefully this information is helpful.

Find a broker (independent) that can write their policy and you will likely find a reasonable rate.

In my case the daughter was POA and independent executor so things weren't held up much.

Set-up an MLS auto-update and be the first offer in.   Depending

Remember, you aren't an employee, you are an independent contractor in the real estate business.  

He's very focused on becoming independent of the channels, but overall he's got great advice for providing great service.