Hard to give good advice without more info, but since You are single no kids it's hard to beat buying a single family fixer upper and living in it for two years and then selling for tax free profits....I'm a big fan of Waltham these days $.02 

I own a single family home in Socal that my wife and i currently living in.

That’s correct, a foreigner can buy property through a Mexican corporation, which is a great option for those investing in multiple properties or running a rental business.Key Points I'd like to add to your post:Setup Costs: $1,500–$3,000 USD.Ongoing Costs: $1,000–$2,000 USD/year for accounting and tax filings.Benefits: Allows tax deductions for expenses like maintenance, repairs, and management.Best for: Multiple properties or income-generating investments.For a single property for personal use, a fideicomiso is often simpler and more cost-effective due to its lower maintenance requirements and feesUltimately, choosing between a corporation and a fideicomiso comes down to your investment strategy.

Purchase price: $240,000 Cash invested: $70,000 3 Bedroom 2 bath Single Family on .75 acres in Pensacola Florida. https://www.airbnb.com/rooms/1171011382027219420?

Unfortunately, it cannot be used for a 2-4 family property, only single family properties. 

., "I will buy at least one single-family home, duplex, triplex, or fourplex before the end of 2019") and then do it.

I still find this hard to believe. 95% of would be real estate investors never buy a single house.

Hey Joanne, you’re definitely onto something with room rentals.. it can be an excellent strategy for offsetting a hefty mortgage and, in some cases, bringing in higher total rent than a single lease.

Do most people get the property under contract in a single-member LLC and then assign the contract to the syndication LLC during the DD period? 

I am a single house landlord and manage the property.