While I am not experienced in commercial space, I do believe that the owner of the commercial property can give you an idea of the price for square foot to build out the space. I would also imagine it depends the type of business you will be placing in the space. Good luck with your search.
RE/MAX Advance Realty
I hope this answer does not finds you too late. So long as no service is moving (MEP fixtures do not move). No new AC only re-route existing ducts, no panel work, reconfigure partition walls, new acoustical ceiling, contractor grade white body ceramic, laminate flooring, 1 bath, 1 kitchette, drop in 2x4 ceiling fixtures, 5 inch base. $39/sf inclusive of plans and permits. This is contractor grade. If a designer is involved the price may change.
BUILDER Pamela Mendoza REALTOR
Real Living First Service Realty: http://www.pamelamendoza.com
Siproeta Constructio Group: http://www.siproeta.com
Cell Phone: 305-316-1179
REO/SHORT SALE Specialist