Proceeds from sale or cash flow would simply follow that percentage based ownership.  

For the sake of my business I need to stop renting and have ownership of where I live.

In the early days of ownership, I had an insurance agent that wanted to play PM too - - told him to invest his money if he wanted in the game and promptly got another agent/company.

Any lending program involving the transfer of title/ownership of your securities to any third party as a condition for funding, is by definition exceptionally risky and according to IRS rulings in 2010 and subsequent litigation against "nonrecourse stock loan" providers, a full sale subject to capital gains taxes at the moment the securities' title transfers to the lending organization.Only two types of securities finance are legit for real estate purposes, and all are licensed SIPC/FINRA: 1) A margin loan, which caps at 50% LTV and averages about 6% interest, based on a single stock; and 2) a line of credit, based on the average value of a basket of stocks, with LTVs typically up to 98%.

Make sure that individual owners make up 60-80% of the ownership. 

He's asked for a percentage of ownership in our company because of the added value he provides (we don't have to go apply for hard money for every project, better terms than hard money, timeline flexibility).

Are you giving up partial ownership in the property?  

Explained purchase price, monthly payment (including taxes and insurance), how much of the payment was P&I and taxes/insurance, parties involved, start and end date, number of months of contract, buyer and sellers address and that buyers would assume ownership at the end, signed and dated by both parties. 

If the property owner does not pay back the taxes with interest and the proper notifications go out to everyone that has recorded interest in the property you will take ownership.

In Texas, each series can have different members holding different ownership interests from the other series or the LLC itself.