Then, upon stage 2 (completion), the money in these accounts would be invested into the property, which would be applied to the principle of the mortgage.Legally speaking, what would this type of relationship be called?

I am a beginner real estate investor trying to forge some great connections and relationships to grow, learn, and contribute in any way I can.

Some areas have restrictions on the number of unrelated people residing in one dwelling and they will specifically define what is considered a relationship.

If you put some effort into building relationships, those people will be there for you to reach out to when you hit speed bumps in your own journey. 

Hearing about their strategies and building relationships is priceless.

Investing in relationships will have an infinite ROI!

If you can’t meet in person to develop a relationship, do it over the phone with a list of informed questions.

Will definitely help as you develop those relationships with wholesalers , agents or other investors. 

I’ve worked on small and large  scale residential and commercial projects and have some great relationships with many of Southern Arizona's finest contractors, tradesmen, supply houses and developer/investors.Recently I attained my real estate license and am slowly building my contacts and relationships in this world.  

I would suggest finding a good agent who you sign with and establish a working relationship with and they will help you figure out where and what and set up a search.