Financing for second deal.

[Chad Duncan]

I bought my first multifamily investment a while back and am saving up for my next one and am wondering how on earth all these investors are gaining huge ground. It seems that 24 units in 2 years is almost a norm, at least looking at success stories it is. 

How can someone go deal after deal like that? My idea/plan is to save money down and house-hack a 4-plex or something along those lines. How could I gain more units (5+) in short amount time?