On average, listings lease in the $20's per square foot per year. The Washington County submarket is experiencing a a rise in rates. In the last 3 months, the median rate rose $5 per sqft per year. That's a 27% rise in rent.
In the last 90 days, 15 listings have been made available, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 7% of the office spaces in the Washington County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,500 sqft. Most properties in this area are around 3 stories. Most buildings in this area were built in 2000 and are Class A.