The typical asking rate per listing is in the $30's per square foot per year. The North Miami region is seeing a a rise in rates. In the last 3 months, the median rate went up $36 per sqft per year.
Compared to the rest of the Gold Coast market, the North Miami submarket has higher rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 1 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 800% of the listings in the North Miami are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 1,210 sqft. Most buildings in this market are close to 3 floors. Most buildings in this market were built in 1970 and are Class B.