Search and Apply for Assumed Names/Co-Partnerships
Oakland County, MichiganClerk/Register of DeedsVital RecordsSearch and Apply for Assumed Names/Co-Partnerships

Search and Apply for Assumed Names/Co-Partnerships

​​Business name searches and registrations for Assumed Names and Co-Partnerships are available through the Oakland County Clerk's Office. 

  • An Assumed Name consists of one or more parties.  It is more binding since all parties listed must sign the documents in front of a notary public and no changes can be made without the signatures of all parties involved.
  • A Co-Partnership consists of two or more parties and may be dissolved or changed by the signature of any party.

The Oakland County Clerk's Office is required to ensure that the business name you are seeking is not being used as an Assumed Name or Co-Partnership within Oakland County. You may apply in person at the Vital Records office or by mail. 

Additional Resources:

Oakland County Business Center Questions regarding small businesses
SBA Services Small Business Administration Resources and Services
State of Michigan How to file corporations and non-profit organizations


Online Search: Free search of Oakland County business name records.

Search Online Business Names 

State of Michigan's Corporation Division Business Entity Search Also find out if your business name has not been filed as a Corporation with the state before filing with our office.


You may first search the online business name search above for availability of a name.  Please note that final approval of a business name is the decision of the Oakland County Clerk's Office.

Each business name is valid for 5 years, subject to renewal.

We are prohibited by law from accepting a name for filing that is the same as or similar to another name already on file.  Keep in mind that spelling variations may exist. 

Certificates may be submitted in person or by mail. You must include a stamped, self-addressed envelope.


  • $10.00 - Assumed Name Certificate
  • $10.00 - Discontinuance of Assumed Name
  • $10.00 - Assumed Name Address Change/Legal Name Change
  • $10.00 - Co-Partnership Certificate
  • $10.00 - Discontinuance of Co-Partnership

Payment Information:

  • Visa, MasterCard, Discover
  • Cash (in-person only)
  • Money Order or In-State Personal Check (payable to Oakland County Clerk)