Frequently Asked Questions
Oakland County, MichiganPurchasingFrequently Asked Questions

Frequently Asked Questions

​​How do I become a registered vendor?

Registration is through the Michigan Inter-governmental Trade Network System.  The Michigan Inter-governmental Trade Network (MITN), is a group of agencies that joined forces to create a Regional Bid Notification System to notify companies of new bid opportunities.  To register, go to their website at

I had registered with Oakland County before they joined MITN. Do I need to re-register with MITN?

Yes, vendors and bidders will receive letters from Oakland County notifying them of the conversion.

Who should I contact for assistance with my vendor registration?

If you need assistance when registering, please click the Support tab at the top of the page within the MITN website  Bidnet provides all technical and customer support for the Michigan Inter-governmental Trade Network System and will be happy to assist you anytime (M-F, 8:00 a.m. - 8:30 p.m., EST).

Who are the other agencies located within Oakland County with membership in MITN?

For a full list of agencies with membership in MITN visit their website and click the Participating Agencies tab at the top of the page.

Are there fees associated with registering with MITN?

Go to the MITN website at and click on Register to view the fee schedule.

Who do I contact if I have questions regarding a particular bid solicitation?

Each bid solicitation will list the Oakland County Purchasing Buyer assigned to the bid, along with their contact information.  All questions should be directed to the assigned buyer.

What are the business hours of Purchasing?

Monday through Friday, 8:30 a.m. to 5:00 p.m., Except Legal Holidays.  Visit Purchasing on the Lower Level of the Executive Office Building (Building 41 West), 2100 Pontiac Lake Road in Waterford, Michigan, 48328.
Call 248-858-0511 to arrange a meeting with a buyer. Meetings are encouraged, but are not a requirement of participation or being awarded County bids. It is generally a good idea to make yourself and the business you represent known to the buyer.

What is a Request for Proposal (RFP)?

A Request for Proposal (RFP) is typically a more complex Invitation to Bid that contains more general specifications designed to outline the minimum County requirements.  Bidders must submit proposals in accordance with the requirements of the RFP.

What is a Request for Information (RFI)?

A Request for Information (RFI) is used when the County seeks help in securing information only.  It may be used to determine if a vendor can provide the desired level and type of services in a cost-effective manner.

What if my insurance documents expire during the term of my contract?

If your insurance expires during the contract term, this would be considered a breach of contract.  No payments will be processed and this could result in termination of the contract.

Who do I contact if I have a general Purchasing question?

For general purchasing questions call 248-858-0511 or email  Your call or email will be directed to the appropriate Purchasing staff member.