Purchasing Office

Doing Business with the City of Duluth

The City purchases goods and services in a variety of different ways depending on the estimated cost and type of the purchase.

  • $10,000 or less - goods/services may be purchased directly by the departments.
  • Under $150,000 - goods/services are purchased through an informal quote process. Contractors and suppliers who want to be added to the bidder's list for purchases under $150K are encouraged to contact the Purchasing Office.
  • Over $150,000 - solicitations for formal sealed bids are posted on the Bids and Request for Proposals
  • Professional services, such as architectural and engineering services, are not required to be competitively bid, although a Request for Proposal process is often used.

Supplies and services may also be purchased using the State of Minnesota Materials Management Division contracts.  Information on becoming a supplier for State contracts can be found here.

The City encourages local businesses, especially minority and women-owned, to compete for City contracts.  If you have questions about the process, please contact the Purchasing Office.

Generally, the City requires a bid bond of 5% for formal sealed bids; proof of general and auto liability, and worker's compensation insurance for any work performed on City property; professional liability insurance for most consulting work; and performance and payment bonds for construction contracts over $100,000.