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Excavation and site work bids in Michigan

2open bids right now
1close in the next 7 days

Updated every morning. Last checked October 6, 2026.

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How to register to bid in Michigan

Where to register
SIGMA Vendor Self Service (VSS)
Cost to register
Free
Where Michigan posts bids
sigma.michigan.gov
  1. Open SIGMA VSS and sign up for a user ID and password. Verify your email address.
  2. Search to see whether your business already has a vendor record. Businesses that have been paid by the state before may already have one.
  3. Enter your account information: organization type (company or individual), TIN, and tax address.
  4. Add your primary address and any other addresses.
  5. Under business information, add your commodity codes and business types (and any discount terms).
  6. Check the summary page.
  7. Accept the W-9 certification (a statement signed under penalty of perjury).
  8. Submit. The confirmation page shows your vendor code. Save it.
What to have ready
  • Taxpayer ID: your EIN, or your SSN if you are an individual or sole proprietor
  • Legal business name and entity type as shown on your IRS W-9
  • Your tax address (it must match your W-9), plus any separate ordering, payment or billing addresses
  • Primary contact name, phone and email
  • Commodity codes for what you sell, and your business types
  • Optional: EFT/bank information for direct deposit, and any attachments

Read the full Michigan registration guide →

Federal bids in Michigan also need an active SAM.gov registration. How to register in SAM.gov

Common questions

Are there excavation and site work bids open in Michigan right now?

Yes. There are 2 open excavation and site work bids in Michigan right now, from federal, state and local buyers. New ones are added every morning.

How do I get new excavation and site work bids in Michigan by email?

Set up a free FindMyBids alert with your trade and state. It takes under a minute and needs no credit card.

What do I need to bid on Michigan excavation and site work contracts?

For state bids, register with SIGMA Vendor Self Service (VSS) (Free). For federal bids, register in SAM.gov (free). Many bids also ask for specific licenses, insurance limits or bonds; FindMyBids' readiness check flags those before you bid.