Any zoning experts here?

How exactly do you determine what your land is zoned for besides looking at the property tax-records and reviewing the city sites for each general zone?

Is there any online tool that provides a much more detailed view of what your zoning/land use means in Miami-dade county?
 
I spoke to a few lawyers and their recommendation was to get a zoning verification letter (which is around $240 with the city - takes about 20 days).