Do buyers have the legal authority to give the tenants 30 days notice to move out immediately upon the deal closing if they don't want to continue having them as tenants?

Author is Avery Carl with The Short Term Shop.  

When we felt uncomfortable with this, and asked them to process a section 8 prospective tenant, they say they wont work with section 8 applicants because housing authority will pay the rent directly to the owner.

I recommend focusing on getting a great investment property and disregarding Section 8 in that pursuit because any property can be a Section 8 property, but a lousy investment is lousy regardless of having a Section 8 tenant or not.Section 8 will perform a basic functional and safety inspection for your units after you have an agreement with a Section 8 tenant and your local housing authority.

Didn't the authorities notify of the sale? 

./.history of the “real estate guru”1971 - Bill Nickerson, author of the first and maybe the best small investor real estate book “How I Turned $5,000 into $5million in Real Estate in my Spare Time” teams with Albert Lowery, a successful disciple of Nickerson’s methodology to form the Nickerson - Lowery seminars.  

As soon as allowed by Authorities, We have several Teams going into NC, SC & TN to setup temporary shelters (TH/Fema Trailers), Food & H2O, Chainsaw Crews & Cleanup Crews, Gen Crew (electricians) & Etc..

A good rule - as long as the plumbing and electric has been updated, a well-built home from the mid-20th century is a better investment and will likely outlast a newer build.Credit to the respective author

If this person holds a sales license, I’d report it to the proper authorities.

My plan was to "self-perform" a land contract by filling out a purchase and sales agreement for a land contract that specifies I will take over the mortgage payments, get authorized on their mortgage, and be authorized essentially to fix up the property and eventually sell it on the MLS since the land contract will give me that control/equitable interest.