Compared to the rest of the Gold Coast market, the Miami Beach submarket has higher rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 16 listings have come on the market, which means leases most likley are going fast. You'll want to be prepared to make an offer immediately. About 6% of the office spaces in the Miami Beach are subleases, so you will probably have to focus your search on direct office leases. 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 market are close to 5 stories. Most buildings in this market were built in 1959 and are Class A.