Direct Answer
To hire a reliable landscape design & installation contractor in Columbus: (1) Get 3 written quotes with line-item breakdowns, (2) Verify OH license at Ohio Construction Industry Licensing Board (com.ohio.gov), (3) Confirm active general liability and workers' comp insurance, (4) Check Google and BBB reviews specific to Columbus projects, (5) Never pay more than 10-30% upfront — never pay in full before completion.
Full Explanation
Red flags specific to Columbus contractors: no physical Columbus-area address, pressure to start immediately, cash-only payment demands, and license numbers that don't verify at Ohio Construction Industry Licensing Board (com.ohio.gov). After major storms, unlicensed out-of-state contractors flood the market — always verify.
Local Factors in Columbus
📍Verify license: Ohio Construction Industry Licensing Board (com.ohio.gov)
📍File complaints: Ohio Construction Industry Licensing Board (com.ohio.gov)
📍Homeowner protections under OH consumer protection law
📍BBB Greater Columbus chapter for complaints history