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