Property Tax Inquiries Call 713.290.9700

Free online enrollment in 3 minutes,
No cost unless taxes reduced, guaranteed.

ENROLL TODAY In the Property Tax Protection Program™

Your property taxes will be aggressively protested every year by the #1 property tax firm in the country. If your taxes are not reduced you PAY NOTHING, and a portion of the tax savings is the only fee you pay when your taxes are reduced! Many FREE benefits come with enrollment.

Free online enrollment in 3 minutes,
No cost unless taxes reduced, guaranteed.

Illinois Residential Assessment Appeal

O’Connor is the leading company representative for the Illinois property owners because:
  • For over 20 years, O’Connor has provided property tax consulting services and has continuously produced results.
  • O’Connor is the most aggressive property tax consultant.
  • We know the processes and appropriate contacts at Illinois Assessor’s Office.
  • Our experience has allowed us to compile sales and unequal appraisal data consistent with the format expected by the Illinois Assessor’s Office

How to Protest your Property Taxes with O’Connor

Review your property tax assessment

  • Does it look right? Do you feel it should be lower?
  • Are these mistakes?
  • Is the assessor’s market value higher than actual market value?

Enroll online with O’Connor

  • We analyze existing documents
  • Our agents research, prepare evidence and present appeals on your behalf
  • Our team coordinates a mutually agreed lawsuit when appropriate
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The Property Tax Protection Program™ Works for You!

It’s YOUR RIGHT to file a property tax appeal each year. It’s also YOUR MONEY that the County keeps when you overpay. Not anymore! Enrollment in the RISK-FREE program means your family is protected for as long as you own your home.

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Our Proven Process

You are not billed for court costs, appraisals, expert witness fees or legal fees.
You pay us only if we reduce your taxes! You have zero risk.

ENROLL TODAY In the Property Tax Protection Program™

  • Your property taxes will be aggressively protested every year by
    the #1 property tax firm in the country.
  • If your taxes are not reduced you PAY NOTHING, and a portion of the tax savings is the only fee you pay
  • When your taxes are reduced! Many FREE benefits come with enrollment.

Free online enrollment in 3 minutes,
No cost unless taxes reduced, guaranteed.

About O'Connor
Property Tax Help Specialists

O’Connor provides property tax appeal services to over 100,000 clients in over 40 states. Client tax savings totaled over $120 million in 2020. O’Connor has been serving property owners since 1974, almost 50 years. Client tax savings total over $1,000,000,000.

O’Connor measures its success in client property tax savings, not billings. Our goal is to save clients $1 billion annually.

With over 200 property tax experts, many of whom have worked with us for 10+ years, O’Connor has the expertise to help with your property tax questions and appeals. We literally wrote the books on property tax reduction:

  1. Mass Appraisal for Commercial – What Every Commercial Property Owner Should Know!
  2. What You Need to Know about Business Personal Property
  3. Cut Your Texas Property Taxes
Property Tax Protection Program Benefits