No, and that distinction matters. Miami Gardens was not incorporated until 2003, but it was built from communities that already existed, among them Carol City, Bunche Park, Norland, Andover, Lake Lucerne and Scott Lake, most of which grew through the 1960s, 70s and 80s as families moved out from Liberty City after I-95 went in. The city is young; a lot of its housing stock is not.
In practice, that means a repair on a Miami Gardens home is usually working against decades of an original supply line or an aging water heater, the same as it would be in any other established South Florida neighborhood from that era, not against brand-new construction.
The city also falls under Miami-Dade’s high-velocity hurricane zone building code, on top of its own permitting process, and NMB Water rather than a Miami Gardens utility supplies much of the water and sewer here. Neither changes the repair itself, but both shape how a job gets scheduled.