Then within a prescribed time if the conditions of the unit were worse or had other problems upon discovery you could then take some or all of the sellers holdback funds in escrow.Remember once a seller closes and gets all the money they vanish most of the time....... : )Doing hold backs and other procedures helps keep them honest and not play games.

Or is this type of deal just not doable and its 100% seller finance or all convential finance...

Or all of these?

I never did get an answer as to whether or not the 900k is the down or all closing costs. 

will the money most likely be due monthly or all at once?

Will they likely release their inventory in small numbers or all at once etc ??

Would it be better for me to only refinance the variable rate loans into one loan or all of them into the same loan? 

And if the house is balloon framed, you can do blown in insulation into relatively small holes near the top of each wall cavity, rather than demo'ing entire wall (plaster and lath demo is a lot of work and a lot of mess too).  

Being a member of this site and using some or all its will make your journey to success faster and less bumpy.  

If there's some way to compel the Seller to give you what you need to make you whole, whether it's access-- or an Easement-- or a boundary line adjustment around structure-- or a boundary line adjustment around structure PLUS setback--  and/or all of the aforementioned plus enough land to make it a legal lot on its own (e.g., if the acreage is shy from the zoning requirement in the neighborhood,) then a good lawyer will know it.