One of our tenants with a substantial lease is a corporate dental chain that asked for 3 months free now with lease added 3 months in the end of lease at 8 years.

I just recently took the leap and opened my own real estate office with the hopes to break away from the corporate world and start building my investment portfolio. 

Is it best to just create this as an LLC, an s-corp or something else? 

It would also make solid corporate housing. 

So when I interviewed with KW to see their in-office training, corporate environment, etc, it was a complete turn off for me.

Legally, you have to have their logo on everything. 

According to my Insurance company I can, even though they are different LLC'S, because I am the only one in the llc. my Legal question is; would putting all the properties under one policy break any "Corporate Vail" that the llc provides because they would be connected by this Insurance policy ?

I've always been intrigued by the creativity behind different types real estate deals and decided to start by getting my license and join a small brokerage in Provo, UT (I'll be active as soon as my fingerprints clear.. hopefully it doesn't take too long) and I'll be able to hit it full time in a few months after my corporate job winds down.

after I take ownership and make some small modifications to how it is managed, reclaim some wasted square footage and reduce the expenses.Is there a way to get some of that equity out to put down on a new asset purchase for the corporation such as a 4–20 unit building with a PP of say 1M or 1.5M.....What is the best way to go about growing quickly but safely?

You are likely to invest more time in cleaning, turnovers, guest inquiries, and damage on Airbnb than if you had a monthly, 3 month, 6 month etc. corporate executive furnished housing unit with security deposit and lease.