Have a long talk with your father and make sure you can both agree on a plan of action.

Hi,My father purchased this 2-family house (R5 Zone) back in 1976 in Astoria Queens, and just like many other landlords in NYC he rents out the cellar/basement.I've been reading online the definition between a basement and cellar based on the link below, and I think my father's falls under a cellar.

My father bought his first property in 2016 and does it part-time. 

Problem:Currently I own 1/3 equity along with my father 1/3 and our partner1/3.

My father died (again)19. 

My plan is to raise capital for the down payment through an investor and create an LLC with my father to get approved for a DSCR loan.

My father in-law did help with some painting and removing some of the popcorn ceiling.

I got my realtor from my father who was big into real estate investing over 30 years ago and did very well until some big life's problems came his way which forced him to sell all his buildings.

I want to treat people like I would want my kids, father or mother to be treated when I am not around. 

My father was in the service too and planted his roots in South Florida as you are doing now when he transitioned out of military life.