Property Details

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PIN & Address

Pin 08-12-215-016-0000
Address 206 S WILLIAM ST
City MOUNT PROSPECT
Township Elk Grove
Read about Reassessments

Tax Details

Property Classification 203
Square Footage (Land) 7,850
Neighborhood 30
Taxcode 16016
Next Scheduled Reassessment 2028
2026 Assessor Certified
2025
Board of Review Certified
Total Estimated Market Value
$430,010
$430,010
Total Assessed Value
$43,001
$43,001
Land Assessed Value
$9,028
$9,028
Building Assessed Value
$33,973
$33,973
* “Property Location” is not a legal/postal mailing address. Its sole purpose is to help our Office locate the property. Therefore, you should not utilize the property location for any purpose, however, you may update the Property Location with your Legal/Postal Mailing Address should you choose to do so. Updating the address will not change the Property Location to a Legal/Postal Mailing Address.
** Information may be available by submitting an FOIA Request
Description One story residence, any age, 1,000 to 1,800 square feet
Residence Type 1.5
Use Single Family
Apartments 0
Exterior Construction Masonry
Full Baths 1
Half Baths 1
Basement1 Partial
Attic Partial
Central Air Yes
Number of Fireplaces 0
Garage Size/Type2 2 Car
Age 73
Building Square Footage 1,712
Assessment Phase Assessor Valuation
1 Excluded from building square footage, except apartment
2 Excluded from building square footage
* “Property Location” is not a legal/postal mailing address. Its sole purpose is to help our Office locate the property. Therefore, you should not utilize the property location for any purpose, however, you may update the Property Location with your Legal/Postal Mailing Address should you choose to do so. Updating the address will not change the Property Location to a Legal/Postal Mailing Address.
** Information may be available by submitting an FOIA Request
*** Is the information above correct? Please click here to provide updated information for this property’s characteristics.
Homeowner
Senior
Senior Freeze
Disabled Persons
Disabled Veterans
2024
Yes
N/A
N/A
N/A
N/A
2023
$923.50
N/A
N/A
N/A
N/A
2022
$916.10
N/A
N/A
N/A
N/A
2021
$1,037.70
N/A
N/A
N/A
N/A

2019 Assessment Appeal Information

Previous Board Certified $26,506
Status Appeal Review Complete
Assessor Valuation $38,834
Assessor Post-Appeal Valuation $34,613
Appeal Number 6024266
Attorney/Tax Representative LEONARD J MOSHER JR
Applicant LEONARD J MOSHER JR
Result Assessed Value Adjusted
Reason The result of a market analysis of your property as well as an analysis of comparable properties.

Certificate of Error History

Tax Year 2018
Certificate Number 40529
Property Location 206 S WILLIAM ST
Issued Date
C of E Description Senior Citizen / Homeowner Non Cooperative
Reason The Senior Citizen Exemption was not applied.
Comments The Assessor's Office has completed processing the C of E. Please contact the Cook County Treasurer or the Cook County Clerk to determine whether you are entitled to a refund or if a balance is due.
Tax Year 2017
Certificate Number 79950
Property Location 206 S WILLIAM ST
Issued Date
C of E Description Senior Citizen / Homeowner Non Cooperative
Reason The Senior Citizen Exemption was not applied.
Comments The Assessor's Office has completed processing the C of E. Please contact the Cook County Treasurer or the Cook County Clerk to determine whether you are entitled to a refund or if a balance is due.
Tax Year 2016
Certificate Number 93261
Property Location 206 S WILLIAM ST
Issued Date
C of E Description Senior Citizen / Homeowner Non Cooperative
Reason The Senior Citizen Exemption was not applied.
Comments The Assessor's Office has completed processing the C of E. Please contact the Cook County Treasurer or the Cook County Clerk to determine whether you are entitled to a refund or if a balance is due.
Tax Year 2015
Certificate Number 111679
Property Location 206 S WILLIAM ST
Issued Date
C of E Description Senior Citizen / Homeowner Non Cooperative
Reason The Senior Citizen Exemption was not applied.
Comments The Assessor's Office has completed processing the C of E. Please contact the Cook County Treasurer or the Cook County Clerk to determine whether you are entitled to a refund or if a balance is due.

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