St. Louis County Property Tax Appeal — Missouri

Rob Hartley·Updated February 16, 2026

St. Louis County, Missouri has a median home value of $226,500 with a median effective property tax rate of 1.35%, significantly higher than the national median of 1.02%. The median annual property tax bill is $3,143, which is $743 higher than the national median property tax bill of $2,400. St. Louis County is Missouri's most populous county and includes the county seat of Clayton along with numerous municipalities like Chesterfield, Florissant, and University City. Property tax appeals are particularly important here due to the county's higher tax burden compared to state and national averages.

Notable cities: Clayton, Chesterfield, Florissant, University City, Creve Coeur

Median Home

$226,500

Tax Rate

1.35%

Annual Tax

$3,143

Population

approximately 1 million

2026 Appeal Deadline: the second Monday in July

Property owners may file an appeal with the independent St. Louis County Board of Equalization starting May 1; the statutory deadline is the second Monday in July.

Property in St. Louis County, Missouri — local tax assessment and appeal guide

How St. Louis County Assesses Property

19%of market value

Assessed by: St. Louis County Assessor's Office

Assessment cycle: biennial

Notices typically mailed: Spring

In Missouri, residential property is assessed at 19% of its market value, which is the fair market value determined by the County Assessor. Currently, the assessment ratios applicable for real estate property in St. Louis County are: 19% for residential properties, 12% for agricultural properties and 32% for commercial properties. For example, if your home's market value is $226,500 (the county median), at Missouri's 19% assessment ratio your assessed value would be $43,035, resulting in approximately $581 in annual taxes at the county's effective rate of 1.35%.

The Appeal Process

Appeals are heard by the Board of Equalization. The Board of Equalization conducts real estate and personal property value appeal hearings for individuals, businesses and manufacturers to determine the correct property value. You will meet with a hearing officer to present your evidence and discuss your property's value.

Step 1: Review your assessment notice when it arrives in Spring and compare it to similar properties in your area

Step 2: Gather evidence supporting your opinion of value, including recent comparable sales, photos of property conditions, and repair estimates

Step 3: File your appeal with the St. Louis County Board of Equalization starting May 1 through the second Monday in July

Step 4: Attend your scheduled hearing before the Board of Equalization, which conducts real estate and personal property value appeal hearings

Step 5: If unsatisfied with the Board of Equalization decision, appeal to the Missouri State Tax Commission by September 30th, or 30 days after a BOE decision, whichever is later

Required form: Property Assessment Appeal Form

Filing Methods

online:The online property assessment appeal web page is available from May to the second Monday in July of each year. To appeal property assessment values online or to view previously filed online appeals, you must be signed into your Revenue online account.

mail:St. Louis County Board of Equalization, 41 South Central Avenue, Clayton, MO 63105

phone:Call(314) 615-7195 to request an appeal form

in-person:Visit the Board of Equalization office at 41 South Central Avenue, Clayton, MO

Evidence to Bring

Comparable sales dataProperty condition photosRepair estimatesProfessional appraisal (if available)

St. Louis County Assessor Contact

St. Louis County Assessor's Office

Phone: (314) 615-2555

Address: 41 South Central Avenue, 3rd Floor, Clayton, MO 63105

Website: https://stlouiscountymo.gov/st-louis-county-government/county-assessor/

Online Portal: https://revenue.stlouisco.com/AssessmentAppeal/

Hours: Monday - Friday 8:00 a.m.

Tax Exemptions in St. Louis County

Homestead Exemption

Not applicable

Missouri does not have a traditional homestead exemption, but offers other property tax relief programs for qualifying homeowners

Eligibility: Not available in MissouriDeadline: N/A

Senior Property Tax Credit

Up to $1,100 for homeowners, $750 for renters

The Missouri Property Tax Credit provides tax relief for eligible seniors and disabled individuals through the state income tax system

Eligibility: Age 65+ or disabled, income limits applyDeadline: April 15 (with state income tax return)

Disabled POW Exemption

100% exemption

Article X, Section 6 of the Missouri Constitution exempts all real property used as a homestead as defined by law of any citizen of this state who is a former prisoner of war, as defined by law, and who has a total service-connected disability

Eligibility: Must be a former prisoner of war, a veteran who became one hundred percent disabled as a result of military service, and must own and occupy the homestead as a primary residenceDeadline: Contact Assessor's office for deadline

Senior Property Tax Freeze

Freezes property tax increases

St. Louis County offers a Senior Property Tax Freeze program for eligible elderly homeowners

Eligibility: Age and income requirements applyDeadline: Check with County for current deadline

Official Resources

St. Louis County Assessor Website →

Official website for the St. Louis County Assessor with property search tools, forms, and contact information

St. Louis County Board of Equalization →

Information about filing property value appeals and exemption requests with the Board of Equalization

Missouri State Tax Commission →

State-level appeals resource for property owners not satisfied with county Board of Equalization decisions

St. Louis County Property Tax Payment Portal →

Online portal to view and pay property taxes, check payment history, and print receipts

Check Your St. Louis County Assessment

Enter your address to see if your St. Louis County property is overassessed.

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Frequently Asked Questions

What is the deadline to appeal my property taxes in St. Louis County?

Property owners may file an appeal with the independent St. Louis County Board of Equalization starting May 1; the statutory deadline is the second Monday in July. This gives you approximately 10 weeks to prepare and file your appeal after the filing period opens. It's important to mark this deadline on your calendar as late filings are typically not accepted unless you qualify for specific exceptions.

How do I file a property tax appeal in St. Louis County online?

The online property assessment appeal web page is available from May to the second Monday in July of each year. To appeal property assessment values online or to view previously filed online appeals, you must be signed into your Revenue online account. You'll need to create an account if you don't already have one, then you can file your appeal electronically through the county's portal at https://revenue.stlouisco.com. The online system allows you to upload supporting documentation and track the status of your appeal.

What is the Senior Property Tax Freeze worth in St. Louis County?

The Senior Property Tax Freeze program in St. Louis County can provide substantial savings by preventing property tax increases for eligible elderly homeowners. While the exact savings depend on your property's assessment changes, this program essentially locks in your current tax amount, protecting you from rising assessments. To qualify, you must meet age and income requirements set by the county. Contact the Assessor's office at(314) 615-2555 for current eligibility criteria and application procedures.

What happens at a Board of Equalization hearing in St. Louis County?

The Board of Equalization conducts real estate and personal property value appeal hearing for individuals, businesses and manufacturers to determine the correct property value. During your hearing, you'll meet with a hearing officer in an informal setting where you can present evidence supporting your opinion of value. This typically includes comparable sales data, photos of property conditions, and any professional appraisals you've obtained. The hearing officer will review your evidence and may ask questions about your property before making a determination.

How much can I save by appealing my property taxes in St. Louis County?

The potential savings from a successful property tax appeal in St. Louis County can be significant, especially given that the median annual tax bill is $3,143, $743 higher than the national median property tax bill of $2,400. While individual results vary based on your property's specific overassessment, even a 10% reduction in assessed value could save the typical homeowner over $300 annually. Some property owners have reported savings of $1,000 or more per year after successful appeals, particularly when significant assessment errors are corrected.

What evidence do I need for a St. Louis County property tax appeal?

For a successful St. Louis County property tax appeal, you should gather several types of evidence to support your case. The most important is recent comparable sales data from similar properties in your neighborhood, which you can find through the county's property search tools. Additionally, take detailed photos showing any property defects, deferred maintenance, or conditions that negatively impact value. Professional appraisals, contractor repair estimates, and documentation of any functional obsolescence or external factors affecting your property's value will strengthen your appeal.

Can I appeal my property taxes if I recently purchased my home in St. Louis County?

If you purchased the property within thirty (30) days of the statutory deadline for filing appeals to the board of equalization, or later in the year, and did not have a chance to appeal to the board of equalization, you will need to send your proof of purchase (sales contract and closing statement) in order that we have substantiating documentation of your purchase. This allows new homeowners who missed the regular deadline due to their recent purchase to still file an appeal with the State Tax Commission.

What are the property tax rates for different types of property in St. Louis County?

Currently, the assessment ratios applicable for real estate property in St. Louis County are: 19% for residential properties, 12% for agricultural properties and 32% for commercial properties. This means residential property owners pay taxes on 19% of their home's market value, while commercial property owners pay on 32% of their property's value. Understanding these ratios is crucial when calculating your tax liability and determining if your assessment is accurate.

For state-wide appeal information including Missouri's assessment ratio and deadlines, see our Missouri Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More Missouri Counties

Jackson County (Kansas City)St. Charles County (St. Charles)

← All Missouri property tax appeal info

Sources: https://www.ownwell.com/trends/missouri/st.-louis-county | https://stlouiscountymo.gov/st-louis-county-government/county-assessor/ | https://stlouiscountymo.gov/st-louis-county-government/board-of-equalization/ | https://www.propertyshark.com/mason/info/Property-Taxes/MO/St-Louis-County/

Last verified: 2026-02-16