This can range from a few thousand to several hundred thousand dollars, depending on the complexity and size of the project

In Metro Detroit area, police will not remove these types of occupants (they are afraid of scamming landlord having police remove legal tenants), calling them a "civil matter" forcing landlord to start court eviction process.

The rules are complex, and unequivocal.

Give the 90 day notice now and prepare to possibly go to court for a hold over tenant.

Commercial properties tend to yield higher returns but come with more complexity, higher risk, and longer vacancy periods, making them better suited for experienced investors.

Online Lead, Probate court, Seller needed to sell quickly.

There are valid reasons for having complex corporate structures, but unfortunately, some lawyers and professionals push unnecessarily complex setups on clients.

I know nothing about ME law specifically but I assume that can be done in accordance with local customs… Either by obtaining a court-certified copy of the original easement and re-recording it with all of the required signatures OR recording a confirmatory deed of easement which spells out the error and corrects it by including everyone who should have signed the original. 

Keep in mind a few things - many major markets currently have a glut of multifamily projects so you may be competing with large apartment complexes with amenities offering incentives in a competitive market. 

@Michael Anderson you have two options:1) Create an Assignment of Lease from you to LLC2) Have tenant sign new Lease with LLC.Really only an issue if eviction or some other court issue.