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