Now I'm left wondering whether it's best to lower the price to get the property off my hands asap or to make some costly improvements that will probably neutralize any increase in value.

I fear that my investment would lose a lot of its value. 

He is local, also an investor and is an investor focused agent that can be of great value to you on your search!

I review the figures with the investor to determine if this is a good deal.

Knowing what type of value it will trade for when stabilized, to make sure you have appreciation for your efforts.  

They may have a "Per Door" value, so that is why I asked about how many units.

If so, just pay them and leave them a review on goggle that is honest. 

Tiny homes depreciate in value similar to mobile homes. 

Incredible value delivered over many years here at BiggerPockets, and that's JUST on these forums, not counting 500+ BP Money podcasts, more YouTube videos, comments across the Facebook groups, and a partridge in a pear tree. 

Lie to them and say you need this so that you know where to send them their security deposit.If you do sue and win your judgment review whether bank or wage garnishment is allowable in your state.