Multi family with commercial space

[D Higgs]

Hi BP!

*FIRST POST! :)

I'm currently researching multi family properties and was wondering how rent, and other expenses were calculated/ impacted on properties with included office space, parking lot, etc. Would this automatically classify this as commercial?

Some units that I've seen so far have only 2-4 units but, again, some have additional business amenities.

Here are the 3 questions from above:

(1) would this type of property be automatically fall into commercial?

(2) how would expenses be impacted?

(3) Any webinars, or sources that are recommended to study and learn related to this?

Thanks!