Trenton City Hall: 2800 Third St. Trenton, MI 48183 | Phone: (734) 675-6500 Fax: (734) 675-4088


City Assessor's Office

Please be aware that the City Assessor's office is closed to the public during this difficult time.  


** If you have purchased or sold a property:  please mail or use the gray dropbox located outside of City Hall to file any forms, statements, or affidavits with our office.   

We highly recommend you include a self-addressed stamped envelope, the originals for our use, and the copy of each form, so that we can stamp and return the copy back to you as filed.

Email is also acceptable at this time, please email to or


If you have any questions, our office will be available via phone or e-mail.  


Thank you for your patience!


Mailing Address:

Attn: Assessor's Office

City of Trenton, City Hall

2800 Third Street

Trenton, MI 48183


Office Hours:

Monday - Friday
8:30AM to 5:00PM

Phone: (734) 675-6810
Fax: (734) 675-5262


John Dahlquist
City Assessor

John P. Dahlquist

Michigan Advanced Assessing Officer

MAAO (3)


Department Hours

The City Assessor's office normal business hours are Monday through Friday between 8:30am and 5:00pm.  The Assessor's Office may be closed due to meetings, staffing levels, or neccessary field work.  Please call ahead to confirm availability (734) 675-6810.


Field Sheet/Record Cards

Record card/field sheet with builiding and improvement sketches for Residential, Commercial, & Industrial parcels are available in the Assessor's Office to view during normal business hours.  

Copy(ies)of record card/field sheet and sketch information will be a $1.00 charge per parcel number and $1.00 per plat map page.

Duties of the Assessor

The Assessor's goal is to provide fair and equitable assessments to the taxpayers. Michigan Certified Assessing Officers are required to annually prepare and certify the assessment roll for the City in accordance with the General Property Tax Act and responsible for the administration of the General Property Tax Laws.

The assessor and staff must complete several tasks not limited to the following:

  • Locate, identify, record and establish the true cash value, assessed and taxable values of all real property subject to taxation.
  • Certified by the State of Michigan as a Personal Property Examiner to establish the taxable values on all taxable personal property.
  • Maintain descriptions of property.
  • Use appropriate appraisal techniques (cost approach, market approach, and also the income approach).
  • Assessment Roll must be prepared on or before the first Monday in March to be presented to the Board of Review by the Tuesday following the first Monday in March (MCL 211.30).
  • Notification of assessment increases must be prepared and sent to taxpayers 10 days prior to the first Board of Review meeting (MCL 211.30).
  • Assessments often must be defended before the Michigan Tax Tribunal.
  • Affidavits for Principal Residence Exemption (which exempt certain properties from paying the 18 mills of school operating taxes) (exemptions granted or denied by the assessor by determining eligibility for claims) and Property Transfers must be processed.
  • Required to preserve and keep all books, assessments rolls and other papers belonging to the office and comply with State Statutes and the Michigan Township Record Retention Schedule No. 10.
  • Must maintain records relevant to the assessments, including appraisal record cards, personal property records, historical assessment data, Tax Maps, and Land Value Maps consistent with the standards found in the Assessor's Manual approved by the State Tax Commission. (MCL 41.62)
  • File numerous mandated forms and reports with the County Equalization Department, the State Tax Commission and the Michigan Department of Treasury.
  • Respond to all information requests from the public.
  • Present annual department budget requirements and other reports to City Council.

Michigan Compiled Law (MCL) 211.27a(1) Except as otherwise provided in this section, property shall be assessed at 50% of its true cash value under section 3 of article IX of the state constitution of 1963.

Evolution Map of Wayne County

This 'Evolution Map' of Wayne County beginning in 1827 was compiled by registered land surveyor Henry T. Kempa.  

Online Search for Assessing, Tax, and Utility Billing...

View: Assessor information such as a  Property's Assessed/Taxable Value and Principal Residence Exemption.  

As well as Treasurer's Property Taxes, Utility Bills, Miscellaneous Receivable, Special Assessment or Delinquent Personal Property Tax Information Online.  

No username or password required and is free of charge.  

Tips for online searching

By Address, use digits only.   This will list all the addresses in the City with the address numbers you provided.

By Name, use last name only.  This will list all the properties under that last name.


**If you have any suggestions, comments, or requests, please contact our office at (734)675-6810**