I contacted sellers agent and asked if we need our own realtor or can he represent buyer side as well.

Just to clarify , peope involved  here me(Investor), JVP(Joint ventore partner) 3rd Contractor, 4th other contractors.So, JVP hired conractor and helped in getting permit, that's all he did, I think after that he didn't care about property. but sub contractor needed , that was done by contractor  and hired his friends were very costly(Obviously).work 70% done in first two months, 10% in 3rd month and 10% done in last 3 months total, so 90% done so far excluding work that I have to cancel because we went much over budget.JVP so far didnt get any money from me. all money I paid to Contractors and subcontractors directly.JVP has nothing on signed papers, what type of issues he can create for me, can he write a lien against property?

Can he possibly pay some of the HOA Dues and then bring an action against the ACTUAL legal owner of the lot in an attempt to FORCE them to SELL the lot to them? 

- does the buyer need to have the property as his PRIMARY RESIDENCE, just A PERSONAL residence (second or vacation home) or can he own the property as an investment? 

What can he do?  

How can he shield his personal assets from liabilities if the entire building is in his name?

Also, does he actively invest himself, and can he show results that align with what you're aiming for?

How much can he sell the Wrap mortgage for to an investor? 

- Can he charge the guest the cost of the cleaning of the full condo or should he charge much less just for the bedroom and the bathroom?

Then question becomes, when does he need the funds, and how much risk can he bear?