Once you have a signed contract you will need to send it to your escrow officer.

I lease space in this multi-tenant fully occupied office building and have the first right of refusal whenever it is put up for sale.

This building will be a two-story home-office, lower commercial for us, upper single family loft to reside in. 

Another possibility might be adding additional sources of income - renting out the common space/room in the office if you have one, to the tenants for birthday parties etc, vending machines, coin operated laundry, pet fees, pet non refundable pet deposits.  

I read something about hiring a loan office with a license or something to take over?

There's really no reason to bring it up in the conversation you have with your loan officer unless a good part of your qualifying income relies on that license.   

You may also try talking to a commercial loan officer at a small community bank.

Office deal?

Sorry to be so brief but I saw this post on my way out of the office and figured I'd help.

assessors office is the best place try your counties GIS dept.