We also know that the sale of each lot can be used for a separate, individual 1031 purchase.

We also know that the sale of each lot can be used for a separate, individual 1031 purchase.

Am I forced to just try and block off parking with some sort of cone and tape or what can I do to deter individuals for parking illegally?

LLC's are around and many people create them(individuals and large companies) on an annual basis, They can't all be creating them with no benefit in mind. 

As mentioned above read what you signed...whoever has purchase your loan, also has these docs and will enforce them if they believe it harms their investment.

@Jeremy L Riddle it sounds like it's maybe time to part as friends cashing in on the growth and profits at hand and re-deploy/leverage individually. 50/50 deals are the most dangerous for the point when there is any impasse. 

@Nick OttenbacherI have done a conventional cash out refinance with a similar type of property, prior to taking it through the subdivision process and selling them individually.

If you are 19, you have a few more years to go before you graduate and once you do, you can rent out the entire house instead of individual rooms.

We don’t know anyone in the area, but you might want to read our series about “How to Screen a PMC Better than a Tenant”, since selecting the wrong PMC is usually more harmful than selecting a bad tenant: https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesAdditionally, don't treat property management like a commodity and just focus on the lowest price!

I’m listing it as an individual, not via a property manager.