Your office flooring needs to fit the space both in design and usability. 

He's also got a 5-7 stall horse barn with tack room and a large tractor/equipment building with A/C office space. 

Do not sign a new listing agreement until the one you're under is void.Good luck and let me know if you need help in the process with letting him go or finding a new broker, I know allot of great brokers in the multifamily space.

Theoretically, by that definition you could have a piece of land with 2 homes on it that you rent the space out to and call it a mobile home park.

Check out Mark Kohler on you tube.  

Mark S.  

I'd ideally like to do a 2-year to with 50% or more of payments as cash (and any bartered labor over 50% would carry over to next month) and 50% going towards down payment) He had intended to rent space for 950.1.

Anything that has room to add value, gets me my own space while continuing to bring in that passive income, and is located in a safe neighborhood will work. 

I make the biggest (e.g. most expensive) version available for a year in advance, but the 1/1 is only available 90 days in advance, so in theory the smaller version only fills in the holes that remain unbooked.Re: the ADU, you may not be able to use it for an STR, but consider if you want to either have it designated as personal space for you, OR use it as an LTR?  

Just for reference, I mark up any of my subcontractors when I bid a job.