You didn't say what the price point was, but 20% down would generally be adequate skin in the game and enough to cover repairs if you end up getting it back. 

Every surface.

And the 10K can be used as your contribution/skin into the deal.

@Danielle Cage, it does, on the surface, seem that $750 would be better spent elsewhere.

It turned out pretty well, and allowed us to advertise granite & solid surface counters.

The approach so far is containment, water extraction, dehumidifiers, anti-microbials, manually removing mold, sanding all wood surfaces once dry, hepa vac, kilz coating of all surfaces, hepa vac again.Perfect storm:enclosed crawlspace, still air, hot water, spraying water leak for at least one and up to two weeks straight.  

However, many portfolio lenders will want to see skin in the game so you may have to put some cash down regardless of how cheap you buy it. 

I do mean smooth... surface, then you can lay the vinyl.  

Typically the developer (often called the sponsor) will be required to invest some portion of the equity to have skin in the game.

You must have thick skin in this business, some call me a skin conditioner!