Sales prices I've looked at range between $140 to $170/SF.
New construction, or buying the shell space? My new construction costs on a 3000sq ft medical building are about $177/sq ft, so your number seems pretty good. Add about $40-$70 /sq ft for build-out costs.
Lease rates are between $13.50 to $20/SF.
My 4 sattelite offices are $21, $26, $26, and $31. And that is just rent, no operating expenses.
ETA: In Houston, btw.
This post was edited on 1/29 at 3:59 pm