CG 20 10 Explained: What GCs Actually Need to Know
CG 20 10 is the most required endorsement in construction — and the most commonly accepted without verification. Here’s what it covers and how to confirm your subs actually have it.
-
-
Certificates of Insurance: The Complete Construction Guide (2026)
Quick answer A certificate of insurance (COI) is a one-page summary document proving that a contractor, vendor, or subcontractor has active insurance coverage. It is not an insurance policy — it is evidence that a policy exists. In construction, COIs are required from every subcontractor before work begins and must be current, compliant with contract…
