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