Personal v. Commercial Loans

[Jack Rozema]

When looking to finance your purchase of an investment property (I'm thinking of smaller properties like single family homes or duplexes), is it better to use a personal/conventional loan or try to get a commercial real estate loan? What are the disadvantages/advantages of each? Do you need to have an LLC set up to get a commercial loan?

Just a broad overview/comparison would be nice. Some additional places/contacts to learn more about this would be greatly appreciated!