The amount of time required to passively invest is a fraction of the amount of time required to source and acquire your own property (especially if you have a busy job, etc.). 

In our case the ‘gifted balance’ was only a fraction of our down payment.

But if it isn’t making you a fat fraction of what you put into it every year then FIND A BETTER INVESTMENT.

But from a cash flow perspective, you can get a good used THOW for a fraction of the cost of an ADU, so you can recoup your initial investment a lot faster. 

His girlfriend just advised me that she does not plan on buying us out, which means having to wait until she dies before I can recoup my father’s investment.However, as a 50 percent owner now, I’m wondering if an investor might be interested in purchasing my fractional interest in the property.

Why would you sign a contract with the tenant giving them legal possession as of a certain date if they are only paying a fraction of the move in cost?

I have an idea that might be worth floating: 1031ing out of your cash-flow-negative property into a fractional ownership investment like a syndicated TIC or DST that can accommodate a quick close on your own timeframe.

@Aaron Mercer - if CFFU is solid, which it is, why haven't you jumped in, especially considering that it is a fraction of $1,500?

If you place a fraction of that type of commitment into real you will be successful.Spend a hour a day for 30 consecutive days on Bigger Pockets and you will receive an Addict award.

Not stick built vs your doublewide.   2nd issue with mobile homes:  98% of listed mobile homes never sell for but a fraction of their listed price.