Why your COI is just the cover sheet: what GCs actually check before signing a sub

Most GCs have seen it: a certified sub wins the bid, gets the letter of intent, and then spends months in back-and-forth with the insurance department before anything gets signed. Or doesn't get signed at all. Bernardo Flores built a painting company in the Bronx with no construction background and learned this the hard way, navigating four months of endorsement negotiations with Consigli's insurance team just to execute one contract.Phil Wilusz spent years on the other side of that table as outside counsel for Turner, reviewing and rejecting sub insurance submissions before moving to Chubb's complex claims group and eventually to WithCoverage.Joining Wissam alongside Alondra Flores, VP of Quality Wet Paint, they break down what actually holds certified subs back at the contract stage and what it takes to stop losing ground you've already won.Topics discussed:Why coverage built for your last job will cost you your next oneAdditional insured forms, primary non-contributory wording, and umbrella limits: what each major GC actually requiresNY Labor Law action over exposure: the endorsement requirement most subs don't know exists until the deal stallsMBE to MWBE certification transition: what it means for bidding eligibility and next-generation ownership.The four-month Consigli insurance negotiation: what got required, what got waived, and whyFlat-fee, carrier-agnostic brokerage: running 13-15 carriers against each other instead of accepting renewal increasesCertified payroll, G702/G703 billing forms, and workforce composition reporting as the real back-office gauntletHow top GCs support certified subs through onboarding: the Plaza project manager who taught Bernardo CPRs, schedule of values, and billing forms on the job.Why painting is a commodity and the business infrastructure is the actual differentiatorFor more on how sourcing and compliance requirements are evolving across the industry, see Tough Leaf’s 2026 State of Certified Subcontractor Sourcing & Compliance Report at toughleaf.com.