Would think about holding added escrow funds to restore property to its original condition.

Rehabilitation includes renovation, restoration, and reconstruction.

Then in 3-5 years they will either have enough to purchase the rest or get financing through a traditional bank to close.I have never been in this situation and I am only getting more and more confused as to what to do because of all the different types of financing structure ideas i've read about.

@Tim Greenfield Marshal Swift is the company most agents, companies and claim reps use to pull thier estimated rebuild costs from.These calculations factor in GC costs and the cost of deconstruction and debris removal in order to get a building in a condition where repair work can be completed.Also ask to see the rebuild cost estimateor they used for your quote.Lastly, you can talk to a restoration contractor for an all park on your building.  

Otherwise I’d look for some like habit for humanity’s “Re-Store” where they sell donated building supplies.

IF there's deterioration at the joist and separating brick, you may be looking at quite a bit of work to restore the front facade.

Hiring a restoration company will be expensive, plus the tend to inflate their prices, in my personal experience.

I've spent my career in rehab and restoration in other places.

If its an area filled with older, restored "classic" homes that likely are all full of hardwood floors, putting in laminate would be a step down.

I would call a restoration company, good possibility of mold, or water damaged sub flooring.