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Duties and Responsibilities of the Assessors Office


The Franklin County assessor's Office currently tracks and assesses over 71,000 parcels totaling more than $1.336 billion in assessed value. This is the thirteenth highest assessed value in the State of Missouri out of the 114 counties and the City of St. Louis.

The Franklin County Assessor's Office receives and processes over 10,000 related instruments and deeds from the Franklin County IT Department per year. Currently there are 6,395 subdivisions in Franklin County.

The Franklin County Assessor's Office biannually reassesses all real estate in Franklin County, which involves reviewing the data, updating data and new photographs if needed on an ongoing basis.

All new construction is tracked; data collected, assessed and added to the assessment rolls annually. Residential, agricultural and commercial new construction is assessed based on its value as of January 1 of each year. Notification of value change on new construction parcels are sent each year.

The Franklin County Assessors Office notifies every owner of real property of the value established for the individual parcels every odd numbered year. Over 70,000 notices are mailed.

The Franklin County Assessors Office classifies each parcel of real estate in compliance with the classifications defined under Missouri statute. This includes 59,498 residential, 7,404 agricultural and 4,098 commercial classifications.

The Franklin County Assessors Office conducts hundreds of informal hearings. Most are done during the reassessment year, but some hearings are held every year.

The Franklin County Assessors Office receives thousands of requests for information available from our office. We receive requests from mortgage companies, real estate agents, banks, appraisers, title companies, government agencies, tax representatives, communities, taxing entities and from our property owners.

The Franklin County Assessor's Office, Real Estate Division consists of four office support personnel, seven field personnel, four of which have their state certification and two supervisors.

The Franklin County Assessor's Office strives to operate efficiently and responsibly. In the past few years our office has upgraded to state of the art computer software for the real estate department. This allows our office to be more independent and flexible.


The Franklin County Assessor's Office mails personnel property declarations annually to every individual and business that was on the assessment roll the previous year. More than 44,000 declarations are mailed each year with an assessed value of close to $300 million. The Franklin County personal property assessment alone exceeds the total real and personal assessed value for more than 58% of the 114 counties in Missouri.

As the declarations are returned they are electronically scanned, then the actual image can be viewed at the workstations. In March second notices are are mailed to individuals and businesses whose declarations were not received.

More than 80,000 automobiles and trucks are valued utilizing values from the National Automobile Dealers Association manuals. The Franklin County Personal Property Department maintains an excess of over 25,000 values for these makes, models and years of vehicles.

Additional items required to be assessed by Missouri statutes include motorcycles, buses, airplanes, motor homes, campers, boats, trailers, farm machinery, livestock and business equipment.

The Franklin County Assessor's Office Personal Property Division consists of one lease company clerk, two personal property clerks, two part time personal property clerks and one supervisor.


Local assessed utilities and railroads are required to report property information to the assessor by April 1, annually. The assessments include both real and personal property and must be identified by taxing jurisdiction and certified by the County Clerk by April 20 each year. These values can fluctuate due to inventories and construction work in progress.


Taxpayers who feel the assessment established by the Franklin County Assessor's Office is unfair or incorrect, may appeal to the Board of Equalization (BOE). This appeal must be filed by the third Monday of June in the corresponding year. The Franklin County Assessor's Office presents to the BOE all information relevant to the appeal so the BOE has adequate information to reach a determination as to the assessment placed on the property.

The Franklin County Assessor's Office places great emphasis on addressing taxpayers concerns in an effort to see everyone is treated fairly and to minimize the number of appeals filed to the BOE.


The Franklin County Counsel represents the county on all assessment appeals from the BOE. For the last several years the Assessor's office has put great emphasis in developing state certified appraisers to better serve the public and represent our office. All of our appraisal staff work directly with the property owners answering concerns and questions they have regarding how their values are determined.


Certificate of Value (COV): Only a few counties in the state have COV. These are Charter Counties. COV requires the disclosure of the sale amount of a parcel of property when the deed is recorded. This would give the assessor's office more sales information as sales are what drives the assessment process.



Real Estate Division
400 E Locust St.
Room 105A
Union, MO. 63084
fax: 636-584-0576
Personal Property
400 E Locust St.
Room 105B
Union, MO. 63084
fax: 636-583-6383

Personal Property Information
Bulletin Board
Franklin County Offices  400 E Locust, Union, MO. 63084    hours: M-F 8:00 AM - 4:30 PM