Direct Answer
To hire a reliable retaining wall construction contractor in Miami: (1) Get 3 written quotes with line-item breakdowns, (2) Verify FL license at Florida DBPR (myfloridalicense.com), (3) Confirm active general liability and workers' comp insurance, (4) Check Google and BBB reviews specific to Miami projects, (5) Never pay more than 10-30% upfront — never pay in full before completion.
Full Explanation
Red flags specific to Miami contractors: no physical Miami-area address, pressure to start immediately, cash-only payment demands, and license numbers that don't verify at Florida DBPR (myfloridalicense.com). Seasonal demand during summer brings out less reputable contractors.
Local Factors in Miami
📍Verify license: Florida DBPR (myfloridalicense.com)
📍File complaints: Florida DBPR (myfloridalicense.com)
📍Homeowner protections under FL consumer protection law
📍BBB Greater Miami chapter for complaints history