Bonds & Surety› Find Construction Work to Bid › Colorado
Public construction work in Colorado is posted in four places: CDOT (Colorado Department of Transportation) for highway and civil work, Colorado Vendor Self Service (ColoradoVSS) for state agency projects, your local city, county, and school district bid boards, and SAM.gov for federal work. Most are free to search. To win the work you will usually need a bond - Colorado requires a bond on local public works over $50,000 and state public works over $150,000.
If you build in Colorado and want into public and commercial work, the jobs are not hidden - they are advertised in the open, and most of the sources are free. Here is where to look, who runs each one, and the bond you will need to actually win the work.
Before you bid in Colorado: Colorado requires registration in ColoradoVSS (Vendor Self Service) to receive and respond to most state and higher-ed solicitations, and CDOT prime contractors must be prequalified before bidding a CDOT project. Register in ColoradoVSS
CDOT posts current and future bidding opportunities on its bidding hub, with bid documents in its B2G system. General contractors must be prequalified at least 17 days before the bid due date; subcontractors do not. See the prequalification requirements.
Start here: CDOT (Colorado Department of Transportation) bidding.
State agencies, universities, and many other public bodies in Colorado post their construction solicitations through Colorado Vendor Self Service (ColoradoVSS). You can browse opportunities there, and you will usually need to register to download documents or submit a bid.
Go to: Colorado Vendor Self Service (ColoradoVSS).
This is where most contractors should start. Cities, counties, school districts, and special districts build constantly and have to advertise it publicly. The jobs are smaller, the competition is thinner, and the bonding is more reachable for a growing company. Major Colorado bid boards:
Weighing a paid platform to find leads faster? See our comparison of construction bid sites and plan rooms - free and paid.
Every open federal construction contract is posted on SAM.gov, and it is free to search and register. You need an active registration and a Unique Entity ID before you can bid. Federal jobs over $150,000 require performance and payment bonds under the Miller Act - see our Miller Act guide.
Colorado requires performance and payment protection on local public works contracts over $50,000 and state public works contracts over $150,000, with the bond set at no less than half the contract amount (C.R.S. section 38-26-106). (C.R.S. § 38-26-106.) Below those points many jobs still require a bid bond just to submit. The bottom line: if you want public work in Colorado, you have to be bondable.
That is where contractors lose jobs to competitors who are no better at the work - the other bidder could produce the bond and they could not. It is usually more reachable than contractors assume. If you are not sure where your bonding stands, start with what a surety bond is, see how contractors qualify, or read the full national guide on how to find construction work to bid on.
Colorado certifies firms through a Unified Certification Program for the federal DBE program (via CDOT) and runs an Emerging Small Business (ESB) program. Confirm current eligibility before relying on it.
The work is out there. The bond is what lets you win it. Take the Grit Bond Scorecard to see where your bonding readiness stands and what to work on to grow your limits - or call our bond team and we will walk through it with you.
Call the Grit team: (801) 505-5500
Start with CDOT (Colorado Department of Transportation) for highway and civil work, Colorado Vendor Self Service (ColoradoVSS) for state agency projects, and your local city, county, and school district bid boards. For federal work, use SAM.gov. Most are free to search.
CDOT posts current and future bidding opportunities on its bidding hub, with bid documents in its B2G system. General contractors must be prequalified at least 17 days before the bid due date; subcontractors do not. Requirements vary by agency and project, so confirm with the awarding authority before you bid.
Colorado requires a bond on local public works over $50,000 and state public works over $150,000 (C.R.S. § 38-26-106), and many jobs require a bid bond to submit. If you are not bonded yet, that is the first thing to solve - take the Bond Scorecard or call (801) 505-5500.
A note on the details: Bidding rules, registration steps, and bond thresholds change over time and vary by project and by awarding agency. Use this page as a starting map, not legal advice. Always review the specific requirements in each bid solicitation and confirm the current rules with the awarding authority before you bid.
This page is part of Grit's national guide on how to find construction work to bid on.