Is it common for developers to use subsidies to cover 100% of the construction costs without needing to obtaining debt or raising equity?

Common sense. 

The mechanism would allow the property to be re-deeded to all of the LPs as tenants in common. 

Would you please be kind to share an emotional service animal addendum that you use @Nathan G. :) Thank you.

Whereas if you and the other investors held ownership as TICs (Tenants in common) then you could sell your portion and do a 1031 of your portion while others did something else. 

Most common is moving 100 miles away from the departing residence **for work**. 

I know Deed in Lieu is a common and normal practice.

Quote from @Anil Shah: Quote from @Derek Brickley: Pretty common, you can definitely use commission as down payment conventional loans and not have it count toward IPC as long as you're on the loan. 

My ultimate goal is to build a portfolio of cash-flowing properties to achieve financial freedom.I’m currently seeking mentors who can guide me through this journey and help me avoid common pitfalls.

A common strategy I see with diversification exchanges, is that the investor will purchase the first property cash and the second with a mortgage.