I'm guessing your dad has been growing weary of managing for a while, so it's possible he's let some maintenance slip or hasn't kept units rented for top dollar as well as they could be. Adding

I'll be adding this area to my list of mailers and other marketing starting January.

This house could be added onto one day and brought up to par with everything else.  

Look on Facebook marketplace, join local REI facebook groups, post that you're looking for a flip and want to be added to wholesale lists. 

Great tool, it would be awesome if this could be added.

I am being up front as possible and would even like the addendum of assignment to be added into the bid offer.

This building should be valued on a commercial (cash-flow) basis, so what you paid shouldn't hurt you.I'd try to negotiate for the second appraisal cost to be added to the eventual purchase price.

And if they were thinking about putting this in a review you can over compliment/ praise  their idea to be implement potential waiting the information to be added in a review 

For owner-occupied homes – including up to five acres of surrounding land – the assessed (or taxable) value is 4% of fair market value, and no school district taxes may be added to the base millage rate.

Account Closed - If the property was purchased this year they will take 75% of gross rents minus PITI and that will be added or subtracted from your monthly income.