No such thing as "current rental rates" for the entire state. In terms of a range, you'll find rents somewhere between $0 and $50/SqFt/year ... no seriously, there is a tremendous range based on age, condition, location, lease structure, etc.
In terms of BOMA measurements, again it all depends. Office space is most regularly leased on either a NRA (net rentable area) or Useable Building Area ... in my experience.
Oct 9, 2012