Essentially it would work something like this…1) My LLC purchases the property 2) He will only charge me COST on the labor and materials (no profit or markups) which will save me around 30% on regular contract figure he gives me in my market which is very expensive 3) He will also make 300k of his own liquidity available to inject into the deal (I will put some of my own cash in and get a HML loan for the rest).

But, let me inject another thought. 

Has anyone successfully used your 401k to form a C Corp and inject those funds into your Real Estate business? 

@Mark Shelstad - Is there any chance you can inject the crack with epoxy and then do an epoxy coat over the slab to seal it. 

There isn't a rotation of liquidity from one place to another, but rather an injection of liquidity into the economy (meaning more growth).

Injecting the LLC doesn't change that.

So you have no clear way to predict your future net worth and estimate an approximated point of financial independence.For each property I’ve been using a spreadsheet to calculate future value minus taxes and commissions to provide an estimated net for a certain sale date, then manually add the lump sum cash injection as an “income event” in Personal Capital, but you can’t associate any property related items together.

My bet is that the water lines can be fixed conventionally after using American Leak Detection's survey of the leaks -- we rarely replace entire water lines.As for the numbers, you have to buy this based on not greater than 1/2 of the value of the park when finished, less all cap-x to inject into it.

- Should person B get 50% leaving C and D to share 50% (25% of profit each) since she acquired the deal and just needs an injection of capital and management to get it to completion? 

Basically it is a balloon that inflates and they inject plastic into the pipe.