Compared to the rest of the Gold Coast market, the Miami Beach submarket has greater rates, and you'll need to pay a premium to be in this hot submarket.
In the last 90 days, 17 listings have been posted online, which means office spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 6% of the available leases in the Miami Beach 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 2,250 sqft. Most properties in this region are close to 5 floors. Most buildings in this market were built in 1959 and are Class A.