The typical asking rate per listing is in the $10's per square foot per year. The Jupiter region is experiencing a decline in rates. In the last 3 months, the median rate fell $4 per sqft per year. That's a 16% decline in rent.
Compared to the rest of the Gold Coast market, the Jupiter region has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 21 listings have been listed, which means listings most likley are going fast. You'll want to be prepared to make an offer immediately. About 5% of the available space in the Jupiter are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 1,640 sqft. Most buildings in this region are close to 1 stories. Most buildings in this region were built in 2002 and are Class A.