You can spot a bad contractor before signing by checking five things: licensing and insurance verification, references from recent comparable projects, bid transparency, communication quality during preconstruction, and willingness to put commitments in writing. Any contractor who resists transparency on these is a risk.
Specific red flags for NYC commercial work: bids significantly lower than competitors with no clear scope reason (almost always missing scope that will come back as change orders), reluctance to share recent client references in your sector, vague or missing insurance certificates, no documented safety program, inability to walk you through their DOB filing approach, and pressure to sign quickly without a detailed estimate breakdown.
The strongest signal of a good contractor is the opposite — they slow down to make sure scope, schedule, and assumptions are clear before the contract is signed. Darby Construction Services treats preconstruction transparency as the foundation of every client relationship.
