You could think about how much capital these investment partners should have to contribute and what their end goals are with the investment(s).How you meet these investment partners is up to you, and can largely be done through groups and other events that draw financially minded people to them.

Then take that system and dump 10's of thousands of dollars into it so $10,000 = $20,000 and so on. 

@Thomas S.

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@Kevin S. is correct--the VA will go with 100% of sales price (assuming the property appraises).   

@Tom S.

That being said, if you narrow your search to a specific type of house in a particular area...you can get some general purchase price numbers.For example, I am looking in a specific area that has tons of 1960's houses and the home values are all right around 220-240. 75% of $240k is $180,000, so if I can buy a property and be at or under $180,000 after acquisition, holding, rehab, financing costs, etc then I can pull all of my money out. 

@Christa S Rickard  I have some multi families, and in general the 50% rule is pretty solid. 

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Then include a clause as to what happens if they aren't and additional damage results.I'm curious if this house had a second bathroom and if they continued to use the tub after they found the crack(s).