Any non-permitted modifications will also be reverted on the owner's dime (or the owner fined until they do)Probably completely different in LA, but not something to mess around with until you talk to someone well versed in your local rental code.

Another downside is you loose on the advantages, of the Federal Tax Code, by not closing in the name of a LLC.

I called someone to bid on a 8 week job, they came back and told me they don't know commercial code.

Another thing I do is look on Craigslist in the zip code and search by type (e.g.

Ohio Revised Code 4735, specifically 4735.01, states what is allowed by a real estate broker.

It looks like we live in the same area code.

A lot of companies require you to be a Realtor because it means you need to live up to a code of ethics higher than the standard of the law. 

There are like..10 zip codes?

One resource I find handy is to plug in a zip code on zillow and see how long "for sales" have been listed.

This list would contain the zip code and corresponding name of the municipality, and a breakdown of the number of SFRs.