Most listings are in the $20's per square foot per year. The Jupiter submarket is experiencing a a boost in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 14% rise in rent.
Compared to the rest of the Gold Coast market, the Jupiter region has less expensive rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 21 listings have come on the market, which means new availabilities most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. About 5% of the listings in the Jupiter are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,130 sqft. Most properties in this region are approximately 2 stories. Most buildings in this region were built in 2002 and are Class A.