Yes you can sell it, you will need to record the land contract with the county to show your equitable interest and make sure in the land contract it gives the ability to sell the property for more than the loan amount and the current owner will oblige to execute the documents as part of receiving the money.

Sending you a dm, let's see how we can work together.I help new investors by (1) showing them the different avenues of investing, (2) teaching different methods on how people can use money that is already in their home, (3) showing how some HOA's can benefit in renting, and (4) refer them to this forum to educate themselves deeper as they start.

If that's the case, at what point can you save money on the build?

I've lended private money to him and seen his rehabs from start to finish.

The Capital or the MoneyThe persons with connections to capital and money.

If you can't pay the 50k back at 30% interest, the money partners stays your 50% partner indefinitely? 

You make money 3 ways: cash-flow, mortgage pay down and market appreciation.

have you asked the seller if they would seller finance and walk away with no money in their pocket upfront and keep their name on the property? 

This is true for syndications, buying a stock, buying a single family home, or depositing money in a bank.  

Hard Money and Private Money How did you add value to the deal?