Frequently Asked Questions about the Assessment Process:
How often is property reassessed?
Real property should be reassessed every odd-numbered year and in even-numbered years the Assessor places a value on new construction. Personal property is assessed every year.
Why is reassessment required?
Under Missouri law, property tax assessments must be based upon market value and should be uniform. Over time, property values may change due to the location of the property, sales in the surrounding areas and other factors.
What is market value?
Market value is the price that your real property would bring if offered for sale if you were not forced to sell and the buyer was not obligated to buy.
Is all property assessed at the same rate?
No, real property is assessed into three categories with separate rates. Personal property is classified into four separate categories with varying rates. The assessed value of both real and personal property is calculated as a percentage of market value.
Rates for real property:
Residential – 19%
Commercial – 32%
Agricultural – 12%
Rates for personal property:
Cars, trucks, boats, motorcycles, campers, etc. – 33.33%
Farm equipment and livestock – 12%
Historic vehicles – 5%
Grain – 0.5%
When is personal property valued?
The Assessor sends out assessment lists at the end of each year. It is your responsibility to return that list to the Assessor's office by March 1, listing the taxable personal property you own as of January 1 of that year. Under state law, there is no provision for prorating taxes for a partial year, and you may be penalized if the form is late.
Will I be notified of an increase in my assessment?
The Assessor is required to send increase notices to the owner of record of real estate in the county. Notices are sent out the end of March of each odd-numbered year if the Assessor has determined that the market value of your property has increased.
What do I do if I disagree with my increase in assessment?
1. Informal hearings: If you feel that the new value of your property is incorrect, call the Platte County Assessor's office at 858-2232. If we cannot answer your questions by telephone, you can schedule and informal hearing with an appraiser. This informal meeting must take place prior to May 1.
Changes in the market value of your property can only be made if you can provide information to show that our records are incorrect. Prior to meeting with an appraiser, you should determine what you believe to be the market value of your property and compile information, such as pictures, a recent sale of your property, or an appraisal of your property, to bring to the meeting as evidence of value.
2. Board of Equalization: If you and the appraiser are unable to reach an agreement as to the value of your property, you may appeal to the Platte County Board of Equalization. This can be done whether or not you have an informal hearing with an appraiser. The Assessor's office provides forms to appeal to the Board of Equalization, and your completed form must be returned to the Assessor's office before the third Monday in June. The Board Of Equalization will hear your evidence of property value and the Assessor's office during a scheduled hearing in July.
3. State Tax Commission: You have the right to appeal to the State Tax Commission by August 15 or within 30 days after the Board of Equalization makes a final decision on your appeal, whichever date is later.
Does the Assessor's office set the levy rates?
No, the levies are set by each taxing district, which includes your school district, water district, sewer district, ambulance and fire districts.
Are you eligible for a tax waiver on your personal property?
To qualify for a tax waiver in Platte County, you must meet one of the following requirements:
1. You must have lived in another state on Jan. 1 of the previous year; or
2. You lived in Platte County on Jan. 1 of the previous year but you did not have any personal property titled in your name.
If you meet requirement No. 1, you will need to show us proof of residency in that state in order to receive a waiver. Any item of proof you submit must include your name and out-of-state address, and must cover the date of Jan. 1 of the previous year. The following items may be used to prove your residency:
1. Out-of-state driver's license that was issued in January of previous year or later.
2. Bank statement from January of the previous year.
3. Utility bill receipt from January of the previous year.
4. Insurance card that covers the date of Jan. 1 of the previous year.
5. Paycheck stub from January of the previous year.
6. Rental/lease agreement covering January of the previous year.
If you meet requirement No. 2 above, you must bring the title or application of title in order to receive a tax waiver. You should receive a tax waiver from the County Assessor's office of the county in which you reside.
Where can I get a license tag once I get my tax waiver?
There are two places in Platte County where you can purchase your license tag, but you can get your tag at any license bureau in the state of Missouri.
Here are the two locations in Platte County:
6523 North Cosby Avenue
Parkville, MO 64151
Phone: (816) 584-8651
Mon - Fri: 9:00 - 5:00
Sat: 9:00 - 12:00
Platte City License Bureau
500 Third Street
Platte City, MO 64079
M, Tu, W, F: 8:00 - 5:00
Th: 8:00 - 6:00
1st & Last Sat: 9:00 - 12:00
Can I get a copy of county maps or map GIS data?
Current tax year Maps and ArcGIS data of Platte County can be purchased through the Assessor's office in Platte City, or accessed online through the