In buildings with fewer than 5 units, there is no statute afaik.

Definitely check out the California statutes.

The MN statute (504B.178) says that the security deposit has to be returned within three weeks "and after receipt of the tenant's mailing address or delivery instructions".

There are statutes of limitation, so if someone sold you the entity, and the entity goes back some years, someone can sue for something that occurred some time before your acquisition.

My accountant told me generally the statute of limitations for what goes on in a 1031x is 3 years, so I do not understand the nature of the limitation imposed on you by the experts or by yourself?

There may be case law or actual statutes that deal with this.

Not sure where @Gordon French's statute came from but it is the old law.Here is the link to the Denver Post article which references the change in the law.

If I recall, the verbatim language in the statute is something along the lines of "Simply owning real-estate itself --- by itself --- does not constitute doing business in Pennsylvania." 

Google up the AL state statutes on real estate licensing.....fun reading.

New Jersey Statutes give a right to a Judge within his or her discretion after Judgment of Possession has been entered and after the Judge has made a determination that no further Order to Show Causes will be issued to give a tenant time to vacate from a tenancy.