I am a full time Driver Operator/Paramedic with a local fire department in south east Florida.

Government is a big sector, along with telecommunications, health care, military, manufacturing, etc.

In my area, you have to talk to the post office as well as the fire department/emergency management.

This is a large company that was once owned by American Express, Spun off Western Union, and recently re-went public a couple years ago after KKR took it private quite a while ago.I work in a function that is only performed in larger Tax Departments.  

I also handed a flyer about the room to the department secretary.

Departing primary residence, generally no.

Do not invest until you know th eregulations that govern your new business. 

You can probably call the city and talk to the buildings department and ask them exactly what you would need to do.

Many have their own QI department.

It is pretty common to have IRS liens and government liens like mowing, demo, nuisance, etc.