Most listings are in the $40's per square foot per year. The Miami-Dade County submarket is experiencing a an increase in rates. In the last 3 months, the median rate went up $11 per sqft per year. That's a 31% increase in rent.
In the last 90 days, 362 listings have been listed, so you'll want to check back regularly for new listings. About 6% of the office spaces in the Miami-Dade County 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,420 sqft. Most buildings in this region are approximately 3 floors. Most buildings in this market were built in 1982 and are Class A.