Residential versus commercial

[Ryan Daulton]

What is the exact criteria for residential versus commercial properties. My understanding is that residential is anywhere from 1 to 4 units. But what if some units have more than one room in them and I rent out each room two separate tenants? For example if I bought a duplex that had two bedrooms and one unit and three in the other for a total of five bedrooms... If I rent out each room to a different tenant would that make it a commercial property?