There’s a moment every new subcontractor in Denver hits eventually. The bid is accepted, the start date is set, and then someone from the general contractor’s office emails asking for documents you may never have heard of. Until those clear, you’re not on the schedule. The busier the GC, the less patience they have for walking you through it, so here’s the walkthrough instead.
The certificate of insurance comes first
The document GCs ask for most is a certificate of insurance, usually just called a COI. It’s a one-page summary your insurance agent produces showing what coverage you carry, at what limits, through what dates. The GC isn’t being nosy. If an uninsured sub damages the property or injures someone on site, the claim rolls uphill to the GC and the owner, so they screen for coverage the way a landlord screens for income.
Two details on the COI trip people up. First, the GC will specify minimum liability limits, and if your policy’s limits sit below their threshold, the certificate gets rejected regardless of the fact that you technically have insurance. Second, the certificate has to be current, and GCs track expiration dates. A policy that lapses mid-project generates an automated follow-up from their compliance system, and on bigger jobs, being out of compliance can mean being pulled off the schedule until it’s fixed.
Additional insured status is the part that surprises people
Most Denver GCs don’t just want to see your insurance. They want to be named on it. Adding the GC, and often the property owner, as an additional insured on your liability policy means your coverage responds to claims against them arising from your work. It’s a standard endorsement your agent can add, usually quickly and often at modest cost, but it has to actually be done. A COI that doesn’t show the required additional insured language is one of the most common reasons paperwork bounces back.
Related, many subcontract agreements also require a waiver of subrogation, which limits your insurer’s ability to chase the GC for reimbursement after paying a claim. Your agent will know the endorsement. The main thing is to send the GC’s insurance requirements page, which is usually an exhibit in your subcontract, directly to your agent instead of trying to translate it yourself.
Workers comp, even if it’s just you
If you have employees, the GC needs proof of workers comp coverage, full stop, because Colorado requires it and an injury on their site by your uninsured worker is a problem that lands on everyone. Where it gets interesting is the solo operator. Sole proprietors can generally exempt themselves from workers comp, but many GCs require proof of coverage anyway as a blanket policy, no exceptions. The industry’s answer to that standoff is a minimal policy that covers any employees you might hire, satisfies the paperwork requirement, and costs far less than coverage on real payroll. Ask your agent about it if you’re a one-person shop hitting this wall for the first time.
Trade licenses and the city side
Alongside insurance, GCs verify the licenses your trade requires. Denver requires licensing for the trades that pull permits, and the electrical and plumbing trades in particular have state-level licensing layered on top of the city’s system. A GC running a permitted job can’t let unlicensed trades do licensed work without putting their own standing at risk, so expect license numbers to be collected right alongside the COI.
Getting your paperwork package ready once
The subs who never have scheduling problems are the ones who treat all this as a standing package rather than a per-job scramble. Keep a current COI on file with your agent’s contact info, know your limits, have the additional insured and waiver endorsements ready to issue, and keep license and workers comp documentation in one folder. When a new GC sends their requirements, you forward one email to your agent and you’re on the schedule in days instead of weeks. In a market as busy as Denver’s, the sub whose paperwork clears fast has a real edge over the sub whose bid was slightly lower.