Certain buildings will tend to appeal to other types of tenants; professionals would be interested in different things that retail businesses, etc.What amenities are important to you? 

Sure you may get some business from it but operating off of fear and not allowing other professionals to come doesn't make it look like you are coming from a place of giving. 

Unless you insulate EVERYTHING and put in good electrical heaters and have a professional do the work then think twice about it.

I am currently an IT professional and have been for roughly 8 years after leaving the USCG (Avionics Electrical Technician).

In my professional life, I have always been the guy tasked with making processes more efficient, and was regularly moved into new jobs to help make that area of the business more optimized. 

(Technically I signed gave to the agent but agent haven’t mail out to him yet)He emailed me his renter insurance and he paid one month broker fee to the agent.Now before he move in he want whole place to be professionally cleaned and whole place to be paint.which is fine with me.Now he want a new ac, and new light bulb shelf inside the closet to be removed ( I dislike those requests ) and He has a mother who is little difficult.

Great input from a working professional!

Rather than starting with Google, start with NARPM.org then you know you are getting a professional.

Duplexes, see #3, keep and rent or Sell.What professional do we start with, builders or developers?  

He's highly professional, reliable and overall a great guy to work with.