Some lenders refuse to send mail to a PO Box.While not perfect, I do know people that have gotten away with a UPS Box as a physical address for years.Technically a PO Box is not a street address.

For physical address is it suppose to be the registered agent's address or the mailing address that was put down on the LLC formation docs?

But, if things go well. so far, i've heard from my brother that the owners of the property we are aiming for, are being difficult and wanted us to make the offer before looking inside the physically looking inside both the units of the duplex. 

Investors can use these differences about property class types to consider how each property fits within their strategy of investing, such as return objectives and amount of risk they are willing to accept in order to achieve those returns.Each property classification reflects a different risk and return because the properties are graded according to a combination of geographical and physical characteristics.

Do you need a physical address there?    

All:I'd like your help in structuring a creative solution to buy a 6-plex that is physically in good shape, though financially it's a mess.  

So I pose this question, when a buyer doesn't have physical money, is there room for me to step in and lend my physical money, and gain a percentage when the house is sold?

I live in good ole boy country and know SEVERAL people in trade skill areas(paint, roofing, hvac, construction) and I believe finding reliable help for the physical part of the business will be relatively easy.

From my understanding my best bet is - if he is interested in selling - find out his situation i.e. equity and any debts owed, write up an offer contingent on further inspections (of the physical property and its records), and if that is accepted either find a partner w cash and rehab exp or find cash buyer/lenders to wholesale the deal.Am I missing anything?

If you're going to manage it yourself definitely get a google voice number; email & physical address for correspondence.