Cook County Property Tax Appeals · Since 1974
50 years of Cook County
property tax reductions.
Most Cook County properties are over-assessed — which means you’re likely paying more than you legally owe. Gertner & Gertner has been fixing that since 1974. Attorneys personally handle every case. You pay nothing unless your taxes go down.
Or call us directly: (312) 782-9222
How It Works
Three steps. No upfront cost.
No risk.
The appeal process can take 8–12 months.
We handle everything. You just sign and wait.
Step One
Free Consultation
Tell us about your property. We review your assessment, research comparable properties, and tell you honestly whether an appeal is worth pursuing. No cost, no obligation.
Step Two
We File the Appeal
Our attorneys prepare and file your appeal at the Cook County Assessor level — and the Board of Review when applicable. You sign the fee agreement and we handle the rest.
Step Three
You Save. We Get Paid.
If we don’t reduce your taxes, you owe us nothing. The process is completely risk-free for you.
The Firm
The expertise of a large firm.
The attention of one attorney.
Founded in 1974, Gertner & Gertner has spent five decades doing one thing: reducing Cook County property taxes. Caren H. Gertner personally oversees every case — not just a paralegal, not just a junior associate.
Only licensed attorneys can represent you before the Cook County Board of Review. Many tax consultants are not attorneys. We are.
Meet Caren & the Team →
Meet Caren
The attorney behind
every case.
Gertner & Gertner was founded in 1974 by Michael D. Gertner — one of the first attorneys to pursue Cook County property tax appeals as a dedicated practice. Caren Gertner, his daughter, joined the firm in 2004 and has carried that legacy forward for over two decades.
When you hire this firm, you get Caren. Not a case manager, not whoever is available. Caren H. Gertner personally oversees every case — reviewing assessments, directing strategy, and guiding every file through the Cook County Assessor, Board of Review, and when warranted, the Illinois Property Tax Appeal Board (PTAB).
“You’ll get personalized attention — but we are the leading experts in this field.”Caren H. Gertner President & Managing Partner · Gertner & Gertner, Ltd.
Who We Serve
Every property type.
One firm.
Residential
Single-family homes, condominiums, townhomes. We fight for homeowners who are over-assessed and paying more than their fair share.
Learn More 02Commercial & Industrial
Office buildings, retail centers, warehouses, and industrial properties. Commercial over-assessment can cost you tens of thousands annually.
Learn More 03Condominiums & Multi-Unit
Condo associations, apartment buildings, and multi-unit residential properties. Complex multi-unit appeals handled with deep Cook County experience.
Learn MoreReal Results
What a reduction actually
looks like.
Residential Single-Family Home
Assessed Value
$207,000
After Appeal
$133,670
Cook County · 2025 · Assessment reduced by 35%
Industrial Property
Assessed Value
$2,639,663
After Appeal
$771,083
Cook County · 2024 · Assessment reduced by 71%
Commercial Property
Assessed Value
$3,015,000
After Appeal
$1,394,204
Cook County · 2024 · Assessment reduced by 54%
Results are anonymized representative examples from recent Cook County appeals. Individual results vary based on property type, assessment, and market conditions. Past results do not guarantee future outcomes.
“I’ve used them for nearly 10 years for my tax appeals and they are excellent to work with. Prompt, professional, helpful, and successful in their outcomes.”
Elliot Small · Google Review · 10-Year Client
2026 Reassessment · South & Western Suburbs
Is your township open for appeals right now?
17 Cook County townships are being reassessed in 2026. Miss your window and you wait a full year.
View Appeal Deadlines
Media & Credibility
Trusted by homeowners.
Recognized by peers.
Caren is a recurring guest on Let’s Get Legal with Jon Hansen — an ISBA-backed program on WGN Radio 720 covering the legal issues Cook County property owners face every year.
Get Started · No Cost, No Obligation
Are you paying more than you owe?
A free consultation takes minutes.
We’ll tell you honestly if an appeal makes sense.
“No up-front fees. No filing fees.
You owe us nothing unless we obtain a reduction.”