Thanks for the replies, everyone. Please don't read too much into my question. I'm not trying to do anything besides determine if a commercial space I'm looking to rent meets code or can be made to meet code, and what specific code applies. Right now there are few outlets. I'm trying to determine how many more the code says there need to be as the landlord and I are in disagreement about this.
The building itself is a large warehouse that will be used for retail sale of antiques/salvage collectibles. Think of it like a big thrift store with higher prices where you can find funky furniture, fixtures, and knick knacks to decorate your home or coffee shop. The space I'm looking at is 500 sqft within that big warehouse, framed off as separate space with a lockable entrance from the warehouse. It will be used as mixed retail/workshop space.