How do investors switch from single family to multifamily? What is the Investment Career Path like?

Single family investments are great.   They flourished in the downturn when there was a foreclosure wave.  Generally, multi-family should create a greater yield.   And you have scalability.  

Right now, pricing for multi-family is high.  It may not be the best time to create a portolio.  However, it is a good time to prep yourself for the future.  

I see you are in Houston.  I suspect that there will be a short to medium term spike in demand for rental housing.  

PS:  I invest more in single families.