Again just my intrepretation - please seek out professional guidance.  

@Eric Jacobs Its a great feeling to see a professional like yourself tell me i have a great chance at success!

I think it's worth it to pay a professional and not co-mingle your hired professionals with your tenant base.

In addition, you don't have a professional to help you negotiate. 

I pay to have it professionally done and taken care of at no charge.

@Gerald Evans,When looking for a tax professional with the expertise in REI the proximity would be of secondary importance.

Furthermore, businesses have an interest in keeping the space well maintained and professional at all time.Therefore, businesses will not trash your office building like people trash your apartments. 

Who would be the best professional to go to for paid advice?

Do some some due diligence, search and read previous discussions, select few professionals and then speak with them, then narrow down to the one you wish to work with.

And that means your investment becomes more valuable over time.BiggerPockets (of course) is an invaluable resource in connecting to local investors and professionals, who can tell you a lot more about the market (local blogs, Cromford type reports, etc.).You'd be amazed what you can learn by reading the local news.