Start sending the proper notice allowed by law.

There are thousands of pages on consumer protection laws and regulations that depending how you go about doing a subject to could be against these laws and regulations. so like most things - is itillegal - it depends.  

A really important thing to keep in mind is tenant landlord laws.

What do you do to ensure that the tenant is responsible for security deposit disputes since that is the largest reason for owner lawsuitsHow familiar are you with the newly changed laws that can affect you the owner if they are not used correctly?

Heck, even within offices, the small 1-tenant office buildings suitable for a dental practice or law practice, those are in a very different world. 

Now, I am an economics and finance major (I find it funny saying that since it's been 30 years) but economics are ingrained in me so I am a firm believer in supply and demand economics.  

No it's your friends boomer parents giving the downpayment to your Gen Z/millennial friend to buy that house to their newlywed son with their new daughter in law/wife being emotional and running up the price because it's a "dream" house.

.: Quote from @Dustin Tucker: Hello Joelle, What are the laws like for landlords, how long does it take for an eviction to take place?

Yes, Oklahoma is a great market to consider, especially for multifamily properties:Affordability: Oklahoma City (OKC) and Tulsa have duplexes and small apartment buildings within a reasonable price range.Landlord-Friendly Laws: Makes property management less stressful.Stable Cash Flow: Properties in Oklahoma often meet or exceed the 1% rule, providing consistent rental income.Growing Economy: Both cities are seeing population and job growth, boosting demand for rentals.Tips for Getting Started:Do Your Homework: Use tools like BiggerPockets calculators to analyze deals and ensure cash flow.Focus on Neighborhoods: In OKC, check areas like Yukon, Edmond, or Midwest City.

Rent control laws are market specific.