Mixed Use Property - General Questions

[Andrew T.]

Curious if anyone has had experience with mixed use properties in Philly as a landlord.

Eyeing a 2-4 unit, 1 of the units is a dentist office, the others are rented out to tenants. The deal would leave me inheriting tenants with a couple years on their lease leftover, that's an entirely different discussion. My questions are as follows - 

1. How does tax work on mixed use property? Will I be looking to pay residential or commercial taxes or a mix of both?

2. Similar question, but what kind of insurance is required on such property?

3. The use of one unit as a dentist office is legal, but how difficult is it to convert to a residential unit? I am clueless when it comes to zoning laws.

Thanks in advance